AIR Test Review Physical Science

Are the forces acting on the objects balanced or unbalanced? The dog is walking on the treadmill on level 3.

• balanced

• unbalanced

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Are the forces acting on the objects balanced or unbalanced? The truck takes a while to come to a complete stop.

• balanced

• unbalanced

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NGSS.HS-PS2-1

Which will cause a moving object to change direction?

• Force
• Gravity
• Inertia
• Speed

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NGSS.MS-PS2-1

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as the mass of an object increases, the pull of gravity...

• Increases

• Decreases

• Stays the same

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NGSS.MS-PS2-4

A force of attraction between objects that is due to their masses.

• Force
• Gravity
• Gravitational Pull
• Weight

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What does the strength of gravity between two objects depend upon?

• Mass & distance
• Mass & weight
• Gravity & inertia
• Inertia & mass

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NGSS.MS-PS2-4

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

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Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

A type of friction that occurs when air pushes against a moving object causing it to decelerate.

• surface area
• air resistance
• velocity
• gravity 

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful