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Page 1: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

PS 29’s Fifth Grade

Science Fair

Project Abstracts

Cobble Hill, Brooklyn

April 20141

Page 2: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

---------------------------------------------------------------------------Fidaa Abdulkareem

Density

Main Question: Does mass affect density?

Hypothesis: I predict that mass will not affect density.

Materials: 3 glass bottles, food coloring, honey, rubbing alcohol, vegetable oil, dawn dish soap, water, measuring cup, and 5 plastic cups.

Procedure: First you pour each liquid into its own plastic cup, next you add food coloring to water (red), vegetable oil (yellow ), rubbing alcohol (green), and dawn dish soap (purple). Then you pour the liquids into the glasses.

Results: I said that if mass matters than the liquids should be poured from highest mass to lowest mass and will succeed but in trial #2 the liquids were in order and it had failed.

Conclusion: This shows that mass doesn’t affect density.---------------------------------------------------------------------------Sophia Amorosa Arevalo

Super Peanut

Main Question: Do peanuts contain enough energy for heating water?

Materials: Small bag/can of unsalted shelled peanuts, a cork, a needle, a large metal can (e.g. coffee can) with paper label removed, can opener, a hammer, a large nail, a metal BBQ skewer, a cup of water, a thermometer, matches, a piece of paper and a pen.

Procedure: Connect a small and large can by a BBQ skewer and fill the small can with water and measure the temperature. Then light a peanut on fire and put it in the large can.

Results: The chart shows that after the peanut was heated and added to the can, the temperature more than doubled from its original temperature.

Conclusion: In conclusion, the peanut had enough chemical energy to heat the water to extreme temperatures. The energy from the burning peanut was transferred into the water and heated it up.

---------------------------------------------------------------------------Amos Amigon

Egg Floating

Main Question: Does salt affect the density of water?

Materials: 7 cups, tablespoon measurement, warm water, 7 eggs, measuring tape.

Procedure: Put one (etc.) tablespoon in each cup of water, until an egg floats. Measure how many milliliters of salt it takes for the egg to float.

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Page 3: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Results: The graph shows that when the cup has three tablespoons the egg starts floating.

Conclusion: As the amount of salt goes up. the egg starts to float. This happens because the salt makes the water denser.

---------------------------------------------------------------------------Martita Baenziger

Weights and Strings

Main question: How does the weight of sand bags affect the shape of the curve being made?

Procedure: Make structure, hang sand bags on hooks, and observer the curve being made.

Results: The chart indicates that the more weight on one side the more it pulls on the other.

Conclusion: Heavier weights will pull on the string making it more vertical. The lighter weights will pull less and get pulled over more by the heavier weights. This makes the string next to them more horizontal.

---------------------------------------------------------------------------Juliana Baluk

Glowing Glow Sticks

Main Question: How does temperature affect how long a glow stick glows?

Materials: 4 glow sticks, water, thermometer, timer

Procedure: put water in a cup, measure the temperature, watch it for 20 minutes, when it starts to dim see how many minutes it has been. Record and repeat steps with water of different temperatures.

Results: The graph indicates that the warmer the water the longer it glows.

Conclusion: The warmer the water the longer the glow sticks glow. This happens because the chemical reaction that makes the glow stick glow will freeze in cold temperatures.

---------------------------------------------------------------------------

Leo Brackett

Electric Fruits

Main Question: Which fruit works as the best battery?

Materials: Wires, bananas, apples, lemons, light bulb, strips of copper, zinc nails, 9 Volt battery

Procedure: Put the copper and the nails into four apples then connect all the apples to the light bulb with wires. Then repeat with bananas and lemons.

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Page 4: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Results: The banana lit the bulb the most.

Conclusion: It could have been the banana because the mass was the greatest or the lemons weren’t as juicy as I thought it would be.

---------------------------------------------------------------------------Theo Brandt

Does the Thickness of a Wire Matter?

Main Question: Does a Thicker wire conduct more electricity than a thinner wire?

Materials: Four sets of wires of different thicknesses, a battery, and a light bulb.

Procedure: Make all four circuits, and then put pieces of paper onto it until it’s dark.

Results: The chart shows that the thickness of a wire doesn’t matter.

Conclusion: If the thickness of a wire does matter, it would be a much bigger wire than the ones I used. This happens because with a huge wire, there would be more metal for electricity to flow.

---------------------------------------------------------------------------Chiara Cecchini Acid And Calcium

Main Question: How does acid affect calcium?

Materials: vinegar, water, eggshell, 2 plastic containers

Procedure: Place 1 piece of eggshell in water, 1 in vinegar. Observe immediately, then once every day for 3 more days.

Results: On the fourth day, some parts of the eggshell have dissolved!

Conclusion: Acid breaks down calcium, dissolving the eggshell. This is the reaction between vinegar, an acid, and calcium, an alkali.

---------------------------------------------------------------------------Felix Cooper

Question: Which different liquids conduct electricity the best?

Materials: Conductivity meter, chemplate, salt water

Procedure: Test the conductivity of normal water with the conductivity meter and chemplate, do the same for others.

Results: Saltwater conducted electricity the best.

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Page 5: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Conclusion: The salt water did the best because it has lots of Ions and the others did bad because they had less Ions.

---------------------------------------------------------------------------Mia Cooper

Main Question: Can Saliva Kill Germs?

Materials: Saliva, inoculation loops,_petri dishes, Staphylococcus epidermis, nutrient agar.

Procedure: 1- put germs in dishes. 2- put saliva in dishes. 3- wait to see growth

Results: Saliva can kill germs, because the one with saliva did better than none.

Conclusion: My conclusion is that dog saliva can kill germs. I say that because when I studied the dishes ones that had saliva did better than the ones that had no saliva.

---------------------------------------------------------------------------

Maya Malhotra Degnemark

Plant Work

Main Question: How do different materials affect the plants life?

Materials: Lysol, Raid, Lemon Juice, Hand Sanitizer, Coffee grains (As a fertilizer), Water, Plants.

Procedure: Every two days pour the six materials on the six plants.

Results: Coffee grinds died first but I think the plant suffocated from the grinds since I put one teaspoon of each material. Hand sanitizer died next, in fact it looks like it got moldy. Lysol and Raid plants died on the same day. The lemon juice plant died on day 5. The controlled plant is still alive.

Conclusion: All the plants with red additives ((Raid, Lysol, lemon juice and hand sanitizer), died. The only prediction I had that was right was that the controlled would live.

---------------------------------------------------------------------------Sorah Guthrie

Surface Tension

Main question: Can the surface tension of water be made stronger?

Materials: Cups, plastic containers [equal in capacity], baby powder, dishwashing detergent, vegetable oil, salt, paper clips.

Procedure: place paperclip in water, add ½ teaspoons of baby powder into the water, add more paperclips if possible, repeat steps 1 and 2 with the other substances.

Results: The baby powder increased the surface tension the most.

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Page 6: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Conclusion: Water molecules from the top of the water are tightened by the pull toward each other and from the water molecules below them.---------------------------------------------------------------------------Isadora Kaufman

Anti-Bacterial Soap

Main Question: Does anti-bacterial soap really kill germs?

Hypothesis: Regular soap does not kill germs.

Materials: 3 jars, 1 bottle of regular soap, one bottle of Anti -bacterial soap, dirt.

Results: Both kinds of soap killed germs.

Conclusion: They both clean your hands from germs 100%.---------------------------------------------------------------------------Charlie Koepp

Acids and Metals

Main question: How do different metals react to acid?

Materials: Copper pennies, sterling-silver forks, lemon juice, distilled white vinegar, NYC tap water, and glass containers.

Procedure: Fill two glasses with water, two with lemon juice and two with vinegar. Add 1 penny to each solution and 1 silver fork to each solution. Wait three days and assess the results.

Results: The tap water did not have any affects on the silver or copper. The vinegar cleaned the penny and the fork. The lemon juice cleaned the penny but tarnished the fork.

Conclusion: Silver is more reactive than copper. The more acidic the liquid was, the more the silver got corroded. The penny did not change as dramatically as the silver because it did not react.

---------------------------------------------------------------------------

Haake, Annabel

Static Electricity

Main Question: Does hair color and texture affect how much static electricity hair carries?

Hypothesis: My theory is that light thin hair will carry the most static electricity.

Materials: Rubber balloon, small paper circles cut from hole punch.  

Procedure: Spread the paper dots out on a flat surface. Rub the balloon on research assistants’ hair a consistent number of times. Move the negatively charged balloon across the dots for a consistent amount of time. Count the dots to determine the amount of static produced.

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Page 7: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Results: Light colored thin hair generates the most static electricity.

Conclusion: The electrons in hair atoms were lost just by rubbing an object against them. Can static electricity can be used to power machines that we use every day like hair dryers and even electric cars? 

---------------------------------------------------------------------------Luna Horsley

Growing Mold with Different Liquids

Main Question: How does different liquids affect mold growth?

Materials: Coke, orange juice, water, vinegar,5 cans, 5 pieces of bread and 5 paper bags

Procedure: Put the bread in the jars then put 1/2 of a teaspoon of each liquid in each separate container put them in a paper bag and near a heating system and check on it every 4 days.

Results: The water had the most mold.

Conclusion: This happens because the mold wants to decompose the rotten food so that happens.

---------------------------------------------------------------------------Oliver Jackson

Main question: How does salt concentration affect brine shrimp (sea monkeys) hatching?

Materials: 3 sea monkeys packages, salt.

Procedure: See how many brine shrimp hatch in two days with different amount of salt in different cups.

Results: The results how that brine shrimp hatched the most with no salt and the least with 1 teaspoon.

Conclusion: Brine Shrimp do not like too much salt in their water. In addition to the salt supplied in the water purifier, 1 teaspoon is way too much for sea monkeys. ---------------------------------------------------------------------------

Mila Janicik

Rate of Evaporation

Main Question: How does temperature affect the rate of evaporation?

Materials: beaker, thermometer, hot water, cold water, room temperature water, graduated cylinder

Procedure: Take the temperature of each waters beaker, measure each beakers water in graduated cylinder, wait 5 minutes and measure how much it evaporated. Repeat until 20 minutes is done.

Results: The graph shows that for every 5 minutes the hot water evaporates a couple of mL, the room temperature water evaporates 0-1 mL, and the cold water doesn’t evaporate at all.

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Page 8: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Conclusion: When the water is warmer it evaporates quicker than when the water is cold. This happens because the water molecules are hot so they turn into gas easier than when water is cold.  

---------------------------------------------------------------------------Ian Krupp

Baking Soda Volcano

Main question: How does the amount of baking soda affect the length of the eruption?

Materials: A cup, Baking soda and vinegar water is optional.

Procedure: Clear a table then put down a cup, get baking soda and vinegar and measure a certain amount of baking soda pour that in, then dump some vinegar in and make sure you time the eruption.

Results: The more baking soda the less time it takes for it to erupt and finish erupting.

Conclusion: In conclusion, when the amount of baking soda I put went up the length of time in the eruption shortened.---------------------------------------------------------------------------

Miles Lindquist

The Effects of Mentos on Various Liquids

Main Question: How do Mentos candies affect various liquids?

Materials: Mentos, Diet Coke, regular Coke, orange juice, white vinegar, lemonade, plain seltzer, large measuring cup, timer, camera!

Procedure: Place the 20 ounces of each liquid on a flat surface, add 1 Mentos to the various liquids. Repeat again using 2 Mentos, and then a third time with 3 Mentos. Record any reactions including eruptions, carbonation, amount of liquid left in the measuring cup after the reaction.

Results: The Diet Coke and the regular Coke were the only liquids which erupted out of their containers and lost over half of their volume in the process. The other liquids had a minimal reaction to the Mentos.

Conclusion: This is a physical process called nucleation in which a change of state occurs. When the Mentos were dropped into the two different Cokes, the sugar on the surface of the Mentos formed tiny nucleation sites. Since these liquids contain carbon dioxide, the sugar from the dissolving Mentos create a force that breaks through the surface of the liquids causing bubbles to form in an explosive eruption.

---------------------------------------------------------------------------Oscar Locatell Harris

Ice and Different Liquids

Main Question: Does ice melt at different rates depending on the liquid?

Materials: Ice, salt, water, soda

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Page 9: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Results: For the first trial, it took the fresh water approximately 7 minutes to melt the ice, the salt water 6 minutes to melt the ice, and the Pepsi 21 minutes to melt the ice.

Conclusion: The Pepsi made the ice melt more slowly than both the salt and the fresh water.---------------------------------------------------------------------------

Jan Maris

Fruit Electricity

Main Question: Which fruit generates the most electricity?

Materials: Fruit, electro meter, nails (copper and zinc)

Procedure: Connect wire to one of the fruits, measure the Voltage. Repeat this for all of the fruit, record results in graph.

Results: The graph indicates that if time the amount of sweet in a fruit increases, the amount of millivolts decreases.

Conclusion: Each time the amount of sourness (acid) in a fruit increases so does the amount of millivolts. This happens because when the zinc (metal) dissolves in the acid, it creates energy

---------------------------------------------------------------------------Nicolas Miranda

How does watering plants too much or too less effect how they grow?

Materials: Plant pots, 3 sunflower seeds, measuring tape, measuring cup, and soil.

Procedure: Plant 3 sunflower seeds, label the pots 1, 2, 3, and 4 at the end of each week I will measure how much did each plant grow.

Results: The chart represents how much did each plant grew each week in centimeters each seed.

Conclusion: The more I watered the plants the more it grew, but the less I watered the plants the less it grew. This happens because if you don’t water plant correctly they won’t grow or may not at all and if you over water it will not grow much.

---------------------------------------------------------------------------Harry Nadaner

Main Question: What is better for basil seed growth: diluted sugar water or diluted salt water, compared to bottled water?

Procedures: Have the following plants: bottled water, 1 tablespoon spoon salt, 1 tablespoon sugar, 1 teaspoon salt, 1 teaspoon sugar. Water every other day 2.5 ml of the liquid.

Results: The seeds that were planted with bottled water grew the fastest and healthiest. The seeds with the lowest amount of salt water grew slower compared to the bottled water plants. The seeds with the highest amount of salt did not grow at all. The seeds with both amounts of sugar didn’t grow.

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Page 10: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Conclusion: Bottled water is best for planting seeds. A low amount of salt water is not ideal but sturdy seeds (like Basil) will grow but at a slower rate. Perhaps, the low amount of salt inhibited some of the mold growth. A high amount of salt does not support plant growth (inhibits photosynthesis). The highest amount of salt water did not even produce any mold.

---------------------------------------------------------------------------

Vaughan Nalley

Floating Egg

Main question: How many tablespoons of salt does it take to make an egg float in water?

Materials: Cup, a measuring tape (or a ruler), a marker, tablespoons an egg, and salt

Procedure: Put 1 spoon of salt in the first cup, 2 spoons in the second, etc., and observe.

Results: The egg started floating a bit after four spoons of salt.

Conclusion: The more salt I added, the more the egg floated. Salt changes the density of water.

---------------------------------------------------------------------------

Spencer O’Connell

Erupting Volcano

Materials: Shoebox, soda bottle, flour, newspaper, and water.

Procedure: Cover Shoebox and soda bottle with the Paper Mache. Fill bottle with vinegar, and pour spoonfuls of baking soda in slowly.

Conclusion: This was a very fun and interesting experiment, it needed a lot of hard work put into it. If you chose to do this experiment, know it will make a big mess.

---------------------------------------------------------------------------

Bleu Parks

Growing Germs

Main Question: Does Hand Sanitizer Affect Germs

Materials: Petri dishes, hand sanitizer, water, syringe, collected bacteria, sterilized swabs, plastic baggies

Procedure: Swab your surface make an S in the middle of your petri dish then put in plastic baggie do the same thing to the same surface but put a drop of hot water and a drop of hand sanitizer in the middle

Results: The petri dishes with the hand sanitizer had more germs growing in it.

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Page 11: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Conclusion: I predicted that the petri dish with the hand sanitizer would kill the growing germs but instead it made the germs expand during growth.---------------------------------------------------------------------------

Perry, Carter

Drawdio Experiment

Main Question: How does the length of a pencil affect the conductive resistance of the Drawdio?

Materials: Drawdio, pencil, ruler, paper, battery, copper tape and wire, alligator clips, salt water and paper towel for conductiveness, microphone, frequency meter, resistance meter

Procedure: Use the drawdio to draw a line. Wet fingers with salt water, put one finger on the zero and put the pencil (drawdio) on the one inch mark of the line, measure sound results on the microphone with frequency meter to see the sound.

Results: The longer that we made the line (by inches), the more resistance and the lower the volume and the sound pitch.

Conclusion: The longer the length the line, the higher was the resistance, because the electricity is going farther through the pencil line. The higher was the resistance the lower the pitch of the sound, and also the lower the volume.

---------------------------------------------------------------------------Lucia Preziosi

Light’s Effect on Mold

Main question: How does light affect how fast bread molds?

Materials: Ziploc bags, mold, bread, differently lit spaces

Procedure: put mold on the pieces of bread, put in bags and into the spaces, the wait 5 days, and check the expansion of mold every day.

Results: the graph indicates that the sunlit space grew the most mold, and the dark space grew the least.

Conclusion: when bread put in different spaces, the mold will grow a lot, or very little, when in natural light, it tends to grow more, but in the dark it grows less.

---------------------------------------------------------------------------

Tommaso Reres

Light or No Light

Main Question: How Does Light affect plant growth?

Materials: seeds, 2 pots, ruler, grow light, water, box

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Page 12: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Procedure: Fill up both pots with potting soil, sprinkle 120 seeds and cover them lightly with soil, put one pot under box and other pot under the grow light, water plants every day.

Results: The graph and chart indicates that every day the plant with light grows about 3.5 centimeters and the plant with no light grows about 3 centimeters.

Conclusion: As the plants grew taller I noticed that the plant with no light was turning white and the plant with light was falling to one side. I guess it doesn’t really matter if plants get or don’t get light.

---------------------------------------------------------------------------Francesca Rutherford

Distractions

Main Question: Which human surroundings cause you make the most mistakes?

Materials: 2 volunteers, and an electronic that can time you and play music.

Procedure: Have volunteer #1 say a list of fruits very fast and you have to repeat them one word at a time. While you are repeating the list, have volunteer #2: scream, jump around, whisper in your ear, mock you in an annoying voice, tap on you and try to get your attention, and turn on music and dance around. Then record your findings.

Results: Trial #1: screaming: 6, Jumping around: 3, Whispering in my ear: 9, Mocking me in an annoying voice: 6, Tapping On Me and Trying To Get My Attention: 4, and Turning On music And Dancing Around:7. Trial #2: Screaming: 0, Jumping Around: 0, Whisper In My Ear: 4, Mocking You In An Annoying Voice: 3, Tapping On You And Trying To Get Your Attention: 7, Turning On Music And Dancing Around: 4.

Conclusion: My hypothesis was 50% correct for the first trial and the second trial because I got half of what I predicted right and half of what I predicted wrong both times.

---------------------------------------------------------------------------Pearl Sapirstein

Earthworms

Main question: How does soil chemistry affect earthworm population?

Materials:  tanks, worms, acidic soil, soil.

Procedure: fill each tank with the different types of soil. Place equal amount of worms in each tank.  Record information over a few weeks.

Results: Non- acidic soil held a population of 6, while the acidic soil only held a population of 5.

Conclusion: I think this result is due to the fact that the acidic soil had moss, and that was a rougher and more tangled terrain than just plain soil. Further experiments needed to determine if the earthworms were responding to the acidic soil or the terrain. ---------------------------------------------------------------------------

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Page 13: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Henry Shey Abrams

The Sturdiest Egg

Main Question: Which type of egg is the sturdiest?

Materials: Three different types of eggs: organic, natural cage-free, and regular grade-A eggs; measuring tape; camera, paper

Procedure: Drop each egg from 17 inches high (my knee height) with my right hand. Measure the egg splatter circumference with a measuring tape. Take photos and record results. Repeat this process for each egg type. For the second round, drop each egg from 30 inches high (my hip height) with my right hand. Measure the egg splatter circumference with a measuring tape. Take photos and record results.

Results: The organic eggs exploded in a frenzy of egg yoke and goo. The first Grade A egg dropped from knee length did hardly anything and the shell did not break; it just produced a small piece of shell. The second Grade A egg cracked on both sides, spilling out the egg yoke in two directions. The first cage-free egg, dropped at 17 inches, broke and made a small mess. The second egg also broke.

Conclusion: Regular grade-A eggs proved to be more durable than organic eggs. This is helpful information because if you buy eggs and you expect those eggs to experience a bumpy ride, then maybe you should buy grade-A eggs because my experiment shows that type of egg to be more durable. I decided to learn more by calling Jane Shey, the coordinator of Minneapolis’ local food program.  She explained that if chickens are kept in a cage like the chickens who lay regular grade-A eggs it means that they are being fed ground-up corn and vitamins, which makes the egg stronger and more durable. 

---------------------------------------------------------------------------Shari, Christina

Liquids and plants

Main Question: How do three different kinds of liquid (Sprite, fresh water, mixed with sprite and fresh water) affect the growth of plants?

Hypotheses: I believe that pure Sprite will change the growth of the plant by making it wilt, become unhealthy and not grow. I also believe that mixed water and Sprite will make the plant grow slightly.

Materials: 3 same types of plants, three spray bottles, Sprite, fresh water, ruler.

Procedure: Place the three plants in front a window, measure the height of each plant, spray the plants 8 times with the three different plants separately 1 time at 9am and 9pm repeat this for 7 days or 6. Pour ½ a cup of liquids every 3 days.

Results: The plants that have water grew the most, the plant that has water and sprite grew a little bit and the plant that has sprite did not grow.

Conclusion: In conclusion sprite makes plants unhealthy. For example in the final result sprite did not grow, sprite mixed with water grew only a little bit and fresh water grew the most---------------------------------------------------------------------------

Lucy Showers 5-504

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Page 14: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

A Worm Made My Radish!

Main Question : How does the presence of worms affect plant growth?

Materials : Plants, water, sunlight, worms, soil, ruler

Procedure: Grow plants in two pots, one with worms and one without worms.

Results: The pot with worms grew taller than the pot without worms.

---------------------------------------------------------------------------

Alexander Shube

Feeding Plants

Main Question: Which liquid enables plants to grow the most?

Materials: orange juice, salt, water, diet coke, a measuring cup, three plants and a tablespoon.

Procedure: 1. Research my plants and liquids. 2.Add 1/4 liquid to all plants which I would repeat.3. Log results. 4.Make my project

Results: The diet coke worked best and the salt water the worst.

Conclusion: The salt in the water killed the plants but the orange and the diet coke both survived.---------------------------------------------------------------------------

Gwendolyn Sonnenschein

Main question: Will pasta cook faster with salt? 

Hypothesis: I think that the pasta will cook faster with more salt.

Procedure: Fill each pot with water, and a different amount of salt. Boil and time.

Materials: Pasta, water, salt, pot, timer.

Conclusion: My hypothesis didn’t turn out correct, but I figured out why. If I had put in the salt before the water, the salt would make the water boil faster. Because I didn’t, the salt just dissolved.

---------------------------------------------------------------------------

Noah Spero

Acid and Foods

How Does Acid Affect Different Foods?

Hypothesis: I predict that the acid will break the foods down. If not, it will preserve the foods. 14

Page 15: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Procedure: Put food in bowls full of acid. Check results at 12hr. & 24hr.; jot down results.

Results: Acid broke down some foods. Some were preserved.

Conclusion: Some foods are broken down by acid. Some foods are preserved by acid.

---------------------------------------------------------------------------

Thompson, Hannah

Comparing Liquid Freezing Points

Main Question: How does adding salt affect the freezing point of water?

Materials: 5 plastic bottles, salt, water, teaspoons, food coloring

Procedure: Fill each bottle with the same amount of water. Then, put a different amount of salt in each bottle. After placing the bottles in a freezing temperature, observe which bottle freezes first.

Results: The graph indicates that the bottle of pure water froze first. The bottle with the least amount of salt added froze next. The bottle with the highest amount of salt froze last.

Conclusion: Salt lowers the freezing point of water. Because salt is an impurity, it changes the natural phases of pure water when mixed in.

---------------------------------------------------------------------------

From Sidney Westfeldt

Main Question: How does acid affect plant height?

Materials: A plant, a teaspoon, acid (white vinegar), and a ruler.

Procedure: Pour increasing amounts of acid on a plant over the course of five days. Measure

Results: The graph indicates that the height remains unchanged after 5 days.

Conclusion: The type of plant used for this experiment does not suffer any noticeable damage, discoloration, or change in height when exposed to acids (in this case white vinegar) in the amounts applied. Further experiments might include different plants, with different stems and leaves in which results could vary. Usually acid takes about three days to have an effect. This experiment was carried out over a period of five days and there was still no change in the plant’s growth/height.

---------------------------------------------------------------------------

Jalyn Young

Volcanoes

Question: What would the effect on the eruption be if I changed the amount of vinegar?15

Page 16: Web viewPS 29’s Fifth Grade . Science Fair . Project Abstracts. Cobble Hill, Brooklyn. April 2014-----Fidaa

Materials: Baking soda, Vinegar, Dye, Bottle, Measuring Cup, Spoons

Procedure: Put 5 spoons of baking soda into the bottle each time, but change the amount of vinegar.

Results: The more vinegar there was, the bigger the eruption.

Conclusion: When I added more vinegar the height of the eruption increased. For example when I did 75 cm I got 11 cm and for 85 I got 13 cm. 85 had a bigger eruption then 75.

---------------------------------------------------------------------------

Zimet, Alex

Cushioning Eggs

Main Question: What cushions an egg best so it doesn’t crack?

Materials: Eggs, Bubble Wrap, Tissues, Boxes, Cotton Balls.

Procedure: Put an egg in three different boxes, each with a different cushion, and drop them, and record the amount of cracks.

Results: Eggs are very delicate. I learned this when I dropped the eggs, they all cracked. ⅔ of them even were destroyed! These were my results  

Conclusion: The Cotton Balls did the best because it was soft, but yet strong and durable.

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