How are Energy and Motion Related?

The scientific definition of energy is the ability to

• Change states of matter

• Change shape

• Cause a change in health

• Cause motion or change

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If two objects with different weights are moving at the same speed, the lighter object has

• less energy than the heavier object.

• more energy than the heavier object.

• an unpredictable amount of energy.

• the same amount of energy as the heavier object.

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When an object moves slower, its energy of motion

• Is zero

• Increases

• Decreases

• Remains constant

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How can a ball be given stored energy?

• Roll it down a hill

• Lift it up to a high shelf

• Drop it from the top of a ladder

• Throw it to another person

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Scientists say that energy is conserved because energy

• cannot be transferred between objects.

• is created when a still object starts moving.

• cannot be created or destroyed.

• can be stored in an object raised to a height.

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While playing outside in the snow, Mario pushes Kaylana down a steep sledding hill as shown here. Which of the following BEST explains when the sled gains the most energy of motion?

• when Kayla gets on the sled

• when Kayla gets off the sled

• when Mario pushes the sled with his hand

• when the sled stops at the bo!om of the hill

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Look at the picture of Phillip dropping a rock into the dirt. In this diagram, in which position does the rock have only stored energy?

• 1

• 2

• 3

• 4

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When playing golf with her friends, Melina hits the ball off the ground using her fastest swing. When does her ball have the MOST energy of moon?

• when it is sittng on the ground

• when she hits it hard off the ground

• when it lands on the grass and stops moving

• when she picks it up and puts it back in her golf bag

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Asad and Sebastian decide to go explore a mountain stream. When they get there, Sebastian drops a rock into the stream and Asad photographs the resulting splash shown here. Which answer BEST explains why the water splashes up in the photo?

• Deep water has more energy.

• Cold water has more energy.

• Some of the energy from the water is transferred to the rock.

• Some of the energy from the rock is transferred to the water.

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Jameson wanted to test how different kicked balls affect their ability to hit a net. To perform his experiment, he found four balls and weighed them. Then, he kicked each ball into the net from a distance of 10 feet. Look at his recorded data and observations in the table below. Based on evidence in the table, which ball did NOT make the net move?

• Football

• Volleyball

• Beach Ball

• Playground Ball

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