Topic 4 Force & Motion Review

Which example best demonstrates kinetic energy?

• A person climbing a ladder

• A fully stretched rubber band

• A rock sitting at the edge of a cliff

• An acorn hanging from an oak tree

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

The graph below represents the motion of a boat traveling at a constant speed. If the boat continues traveling at the same speed, how far will it travel in 6 seconds?

• 8 meters

• 32 meters

• 40 meters

• 48 meters

A child throws a ball straight up into the air. Which of the following correctly describes when the ball's kinetic energy becomes potential energy?

• When the ball rises in the air

• When the child throws the ball

• When the ball reaches its peak height

• When the ball reaches its fastest speed

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NGSS.MS-PS3-5

Brian rides his bike down a hill without needing to use the pedals. Which sentence best describes the change in energy that is occurring?

• Kinetic energy is created from potential energy

• Kinetic energy is being stored as potential energy

• Potential energy is transformed into kinetic energy

• Potential energy is being destroyed by kinetic energy

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NGSS.MS-PS3-5

Which of the following describes motion caused by a contact force?

• A sailboat moving on a lake

• A marble rolling down a sloped board

• A leaf falling to the ground from a tree

• Iron filings being pulled up by a magnet

Sarah has a 3-kilogram block and a 5-kilogram block. When would a block's gravitational force on Sarah be strongest?

• when she stands one meter away from the 3-kilogram block

• when she stands one meter away from the 5-kilogram block

• when she stands five meters away from the 3-kilogram block

• when she stands five meters away from the 5-kilogram block

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NGSS.MS-PS2-4

A glass marble is placed 5 meters away from the following objects: - a beach ball - a basketball - a steel marble - a bowling ball Which object will exert the greatest gravitational force on the glass marble?

• the beach ball

• the basketball

• the steel marble

• the bowling ball

Tags

NGSS.MS-PS2-4

Scientists often reach conclusions using the scientific method. But sometimes they do not use the scientific method and still make important discoveries. Which is NOT a correct method to reach a scientific conclusion?

• A creative guess followed by work to prove the conclusion

• A random guess combined with luck to prove the conclusion

• Old research combined with new research to prove the conclusion

• An accidental discovery followed by research to prove the conclusion

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NGSS.MS-LS2-4

NGSS.MS-PS1-2

How does the law of conservation of energy apply to the changes in potential and kinetic energy of a pencil as it falls to the floor?

• Potential energy is converted into kinetic energy.

• Kinetic energy is converted into potential energy.

• Kinetic energy is created as potential energy is destroyed.

• Potential energy is created as potential energy is destroyed.

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NGSS.MS-PS3-4

NGSS.MS-PS3-5

How can an object be changed in order to increase its kinetic energy?

• By rolling it

• By cutting it

• By coloring it

• By freezing it

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NGSS.MS-PS3-4

NGSS.MS-PS3-5