Air Pressure 15 N

Air Pressure 15 N

Lift 30 N

Wind gust 15 N

Gravity 15 N

In which direction will these balloons travel?

ANSWER:

The balloons will move to the left

You notice that your plate is warm underneath your hot dinner. Which statement describes why your plate is hot?

A. Radiation- because your hot food is sending heat waves to the plate

B. Insulation- your plate is made to hold in heat

C. Conduction- because your hot food is touching the plate

ANSWER:

C. Conduction- Because your hot food is touching your plate

This compound is made up of different elements. Which elements are represented?

CaCO3

ANSWER:Calcium, Carbon, Oxygen

List these substances in the correct position from most dense to least dense. They each have a volume of 5 ml

Substance Mass Oil 6 gSoda 25gVinegar 15gCorn syrup 30 g

ANSWER:

Corn Syrup, Soda, Vinegar, Oil

When you stop to put fuel in your car, what energy transformation is represented?

A. Electrical to mechanicalB. Chemical to nuclearC. Mechanical to chemicalD. Chemical to mechanical

ANSWER:D. Chemical to mechanical

During a demonstration, your teacher pushes some books.

Demonstration 1. Your teacher pushes 1 book with 2N of forceDemonstration 2. Your teacher pushes 1 book with 4 N of forceDemonstration 3. Your teacher pushes 2 books with 4 N of force

Which 2 demonstrations will cause the books to move at the same speed?

ANSWER:Demonstrations 1 and 3 will move at the same speed

( Each book has 2N of force pushing on it)

What is occurring to the M&Ms?

A. Heat is transferring to the M&Ms by convectionB. Heat is transferring from the M&Ms by conductionC. Heat is transferring to the M&Ms by conductionD. Heat is transferring to the M&Ms by convection

ANSWER:C. Heat is transferring to the M&Ms by conduction

Which non metal is the most dense?

Non- Metal

Mass Volume Density

Wood 15g 3 cm3

Sulfur 11g 3 cm3

Chalk 5g 3 cm3

Cardboard 6g 3 cm3

ANSWER:Wood is the most dense

The image below shows that when sodium ( Na) a metal, is combined with chlorine ( Cl) a poisonous non-metal, a white solid is formed.

Which statement is true?

A. The properties of substances that react chemically stay the same when a new substance is formed

B. The properties of substances that react chemically are different from the properties of the original substances

ANSWER:

B. The properties of substances that react chemically are different from the properties of the original substances

Zack and Billy decide to race to see who can run around the outside of the school the fastest. Each lap around the school is 200 meters. This is their data:

Person Number of laps around the school

Time ( Minutes)

Zack 2 4Billy 6 5

Which statement is true?

A. Billy was faster than Zack by 140 m/minB. Zack was faster than Billy by 140 m/minC. They ran the same speed

ANSWER:

B. Zack was faster than Billy by 140 m/min

What happened between 5 and 10 seconds on this graph?

Distance

A. The object is acceleratingB. The object is deceleratingC. The object has stoppedD. The speed is decreasing

ANSWER:

C. The object has stopped.

What type of heat transfer is occurring in these pictures?

ANSWER:

Convection

Penguins stand close together to keep warm, and share body heat. Which direction will the body heat travel?

12

3

Penguin 1 : 74 degrees

Penguin 2: 92 degrees

Penguin 3: 79 degrees

A. From Penguin 1 to Penguin 2B. From Penguin 3 to Penguin 2C. From Penguin 2 to Penguin 3

ANSWER:

C. From Penguin 2 to Penguin 3

When we use pulleys, it helps to decrease the amount of force that is used because it:

A. Makes to person work harderB. Swings the object directly to usC. Requires more work due to installing the pulleysD. Increases to amount of distance from the person lifting and

the object

Answer: Increases to amount of distance from the person lifting and the object

The elements that are highlighted in yellow all are:A. Metalloids that are insulatorsB. Metals that are insulatorsC. Nonmetals that are shinyD. Nonmetals that are insulators

Answer: Nonmetals that are insulators

• There are two unknown substances that the students have to test in science class. How would the determine if the substance is an element?

A. If the substance floats or sinks in waterB. The total amount of atoms in the substance.C. The total amount of different atoms in the substance.D. If the substance can burn when in contact with fire

Answer: The total amount of different atoms in the substance

• A boy comes in form playing in the snow on a snowy day. The boy warms himself by sitting by the fireplace, this is an example of:

A. Conduction B. RadiationC. ConvectionD. Burning

Answer: Radiation

What would be a correct statement to infer about the elements in the table above?A. They can only be made in a lab with a scientistB. These elements are only found on the EarthC. The elements are rare on the Earth and in the atmosphereD. All of the elements are used to make metal

Elements Mass of the Element(parts per million)

Hydrogen 830,000

Helium 343,000Oxygen 11,000

Carbon 3,620

Iron 2,090

Boron 960Gold 890

Neon 520

Answer: The elements are rare on the Earth and in the atmosphere

A student is researching minerals and must determine the identity of the substance. The mass of the substance is 21 grams and the volume is 3cmᶟ. What is the identity of the mineral?A. AmethystB. RubyC. GarnetD. Adamite

Substance Density

Amethyst 5g/cm³

Ruby 7g/cm³

Garnet 3.5g/cm³

Adamite 2.5g/cm³

Answer: Ruby

• A student has on a propeller hat and wants to show her mother how it works. The propeller has a rubberband on it. She spins it several times to twist the rubberband, which statement best describes the purpose of the rubberband.?

A. It transfers sound energyB. It has potential energyC. It has kinetic energyD. It transfers kinetic energy

Answer: It has potential energy

• Which one of these elements is an element according to the chart above?

A. 1 and 3B. 2C. 3 and 1D. 1, 3 and 4

1 O₃2 O3 H₂O

4 CO

Answer: 2

• A limited number of elements on the periodic table are present in:

A. EarthB. Earth, all living matter, oceans, and the atmosphere onlyC. The atmosphere and the Earth onlyD. Earth, all living things and the ocean only

Answer: Earth, all living matter, oceans, and the atmosphere only

• The information found on the square above is an:• A. mixture• B. Element• C. Compound• D. Letters representing a compound

Answer: B

• Which direction will the heat flow?A. From the hand to the fireB. From the burning candle to the fingerC. From the finger to the burning candleD. From the fire to the burning candle

Answer: From the burning candle to the finger

A student has a green block of an unknown substance and wants to find out what is based on its density. The mass of the block is 32 grams and the volume is 4 cm3. What is the block made of?

Material Density

Glass 1.0 g/cm3

Silver 80.0 g/cm3

Calcite 8.0 g/cm3

Gypsum g/cm3

Answer

Calcite8.0 g/cm3

Pulling a rubber band band before releasing it is transferring what kind of energy?

Answer

Potential Energy

According to the data table, the __________ force is applied over a __________ distance.

Length of inclined plane Force (N)

2 meters 500 N

4 meters 250 N

6 meters 125 N

8 meters 62.5 N

Answer

According to the data table, the less force is applied over a greater distance.

A toy car is traveling a distance of 145 cm in 5 seconds. What was the car’s average speed?

**DON’T FORGET UNITS**

Answer

29 cm/s

You, the Earth, and all living things are composed of-A. The metals on the periodic tableB. All of the elements on the periodic tableC. The nonmetals on the periodic tableD. A very limited number of elements on the

periodic table

Answer

D. A very limited number of elements on the periodic table

Because we are mostly made of only 8 eight elements

Which is a compound?

SaltIron

Gold

IronSilver SaltGold

Iron

Answer

Salt

Is the following material most likely a metal, nonmetal, or metalloid?

Sample Test

Appearance Blue, Crystalline

Conducts electricity? No

Density 2.4 g/cm3

Malleability Shatters when hit with hammer

Answer

Nonmetal

Luis is jumping on a pogo stick. Where does he have both kinetic and potential energy? At the highest point, lowest point, or in the middle of both?

Answer

In the middle or halfway point of the jump

Which is evidence that a chemical change occurred?A. The mass decreasesB. The temperature decreasesC. The state of matter changesD. The color does not change

Answer

B. The temperature decreases

What energy transformation is occurring when an electrical pencil sharper moves and makes a loud noise while sharpening a pencil?

_________ _________ _________

Answer

Electrical Mechanical Sound

A campfire being used while camping is using which energy transformations?

_________ _________ _________

Answer

Chemical Thermal Light