Ecosystem Review

1. What are the non-living parts of a woodland ecosystem?

1. Snakes, lizards, toad2. Air, water, light3. Crickets, isopods,

earthworms4. Strawberries, willow

trees, flowers

Non-living parts of an ecosystem are air, water, soil, rocks, and sunlight. You could also include altitude

2. Which of these is a freshwater ecosystem?

1. Atlantic Ocean2. Falls Lake3. Pacific Ocean4. Indian Ocean

Freshwater ecosystems are aquatic systems which contain drinkable water or water of almost no salt content. Freshwater resources include lakes and ponds, rivers and streams, reservoirs, wetlands, and groundwater.

Salt water ecosystems are aquatic systemsthat contain salt water. All oceans aresalt water ecosystems.

3. At the NC aquarium there is a large salt water touch tank. Which best describes this tank?

1. Large ecosystem2. Mountain ecosystem3. Model ecosystem4. Tank ecosystem

This is a model ecosystem because it represents an ecosystem.

4. Which is these organisms make their own food?

1. Snakes and lizards2. Snails and isopods3. Plants and algae4. Pond snails and fish

Plants are

producers.Plants produce food from the energy of the sun.

.

5. Which of these is needed for algae and aquatic plants?

1. Warm temperature2. Rocks3. Fish4. Sunlight

Plants need sunlight, water and soil to completePhotosynthesis to make food.

6. Which of these is a fast moving aquatic environment?

1. Aquarium2. Meandering River3. Mountain Stream4. Tidal Pool

SlowSlow

Aquarium

Meandering river

Mountain Stream

Fast

Tidal Pool

Slow

7. Calvin and Joe are setting up an aquarium. Why are they careful not to add too much elodea?

1. Elodea attracts small insects.

2. Duckweed is better to add.

3. Too many of one organism can crowd the system.

4. Too much elodea turns the water green.

You can’t have too much of any plant or animal in your ecosystem, or it will crowd out the other living things.

8. What ecosystem would have shells, sand and tidal pools?

1. Desert2. Ocean3. Pond4. Riverbank

Ecosystems

Ocean Tidal Pool Desert

Pond

Riverbank

9. When testing the Ph of soil what must you do?

1. Make sure pH paper is in the sun.

2. Make sure the pH paper is dry

3. Press the pH paper until it is moist.

4. Tape the ph paper outside of the terrarium.

PH paper must be moist to test the pH.

10. Why did we plant the seeds in the terrarium several days before we added the animals?

1. Animals needed the plants for food.

2. Seeds were more important.

3. Seeds won’t grow without sunlight.

4. Animals need more space.

We planted the seeds that would grow into plants. The grass fed the crickets.

11. What do producers contribute to an ecosystem?

1. They are the “clean up” crew?

2. They eat the consumers.

3. They eat small plants.

4. They make their own food and oxygen.

Consumerseat producers

Producers make their own food.

Decomposers are the “clean up” crew.

12. Which organisms recycle decaying plants and animals into something

useful?

1. Decomposers2. Producers3. Consumers4. Trees

Scavengers eat deadand decaying matter.

13. How do you classify animals, plants and algae?

1. Ecosystem2. Habitat3. Model4. Organisms (Living)

Algae Algae

14. What kind of plant would you have in an aquarium?

1. Grass2. Rye3. Elodea4. Wheat

Elodea was the plant we put in the aquarium.

15. Which of the following is a non-living thing?

1. Fish2. Snails3. Elodea4. Sunlight

Sunlight is a non-living thing

16. What is the source of energy for the frog?

1

2 3

4

1. 12. 23. 34. 4

Caterpillar is the source of food for the frog.

17. Which of these are the only organism that can make food from non-living material?

1. Producers2. Consumers3. Decomposers4. Water

Producers make their food from the sun, water and soil which are non-living things.

18. What is the primary (main) energy source for all organisms?

1. Decomposers2. Producers3. Consumers4. Sun

The sun provides energy to producers who make their own food. Consumers eat the plants or animals that eat the plants.

19. If a plant is missing part of a leaf, what might you think is happening in

the aquarium?1. The plant is dead.2. An animal is eating

the plant3. The water is too

cold.4. The aquarium needs

more snails.

Not the kind of fish that we had in our aquarium.

20. How can you be sure the fish are eating the plants?

1. Remove some of the fish

2. Add some fish3. Add more snails4. Observe the fish

and record what happens.

Observation and note taking is the best way to know what is going on in theaquarium or any investigation.

21. What would you use to test the effects of acid rain in your ecosystem?

1. salt2. baking soda3. lemon4. milk

Lemons are acids like vinegar. You could use them to make a test solution.

22. What is a variable in an investigation?

1. The thing that changes

2. The thing that stays the same

3. Writing in your science notebook

4. Your prediction

23. What is the control in an investigation?

1. The thing that changes

2. The thing that stays the same

3. What is written in your science notebook

4. None of the above

If you wanted to investigate the effect of acid rain, you could have two aquariums. Put an acid solution in one, which would be the variable, and nothing in the other. Thatwould be the control.

VariableWhat changes

ControlWhat stays the same

24. Which of these is an environmental problem?

1. People hunting2. Fertilizer too close

to a river3. Bicycle lanes4. All of the above

Environmental ProblemsAcid rainRock salt on covered roadAir and water pollutionFertilizer going into water sourcesOver population of some animals

25. When you are doing an investigation, what is a prediction?

1. The information or data you collect

2. The focus question you are answering

3. What you think will happen

4. What you learned

Component Purpose Question

Focus Question What is being in investigated? What does…? How does…? What can…? How does? Which…?

Prediction Provides a reasonable explanation I think … will happen because…

Planning - general- operational

Describes which variables will be changed

Data Observation and measurement

Data charts, tables, graphs, labeled diagrams and illustrations

How are we going to record what we are going to observe or measure?

Claims/Evidence Claims linked to data I claim …because…I know … because…

Conclusion What was learned from the evidence.

Today I learned …

Reflection Opportunities to think about what you learned.

The questions that I have now are …I wonder if …

26. How do you measure how acidic a solution is?

1. Grams2. Ml3. Mohs’4. pH

pH test strips are used to measure how acidic something is. The lower thenumber the more acidic.

27. Where does oxygen come from in an ecosystem?

1. Consumers2. Producers3. Decomposers4. Scavengers

Oxygen comes from producers and is breathed by consumers.

Carbon dioxide comes from consumers and is breather by producers.

28. Why did we let the water sit for our aquarium for a day before we added the

fish.

1. So that it would be the correct temperature.

2. To clean the water.3. To add oxygen to

the water.4. Easier to move the

fish.

We let the water set for 24 hours so that oxygen would be added to the water. We could have used a plastic dropper to gently bubble air to add oxygen to the water. The fish needed oxygen in the water to breathe.

29. How do decaying plants and animals help the soil in an ecosystem.

1. It puts nutrients in the soil.

2. It removes pollutants

3. The soil stays dry4. The soil stays moist.

Decaying plants and animals put nutrients in the soil.

30. Which of the following are scavengers?

1. Isopods and snails2. Elodea and fish3. Crickets and rye4. All of the above

Isopods and snails are scavengers.