IQWST Unit 2 - Why Do Some Things Stop While Others Keep Going?

Which of the following represents energy being converted?

• stretching a rubber band, then letting it go

• dropping a ball

• playing with a yo-yo

• a book sitting on a desk

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You are getting ready to shoot an arrow into a target. You take the arrow and place it into the bow. You pull the string back and release the arrow.

What type of energy is represented in the picture of the bow and arrow in Figure 1?

• kinetic energy

• elastic energy

• gravitational energy

You are getting ready to shoot an arrow into a target. You take the arrow and place it into the bow. You pull the string back and release the arrow.

Which type of energy conversion is involved when the arrow is released in Figure 2?

• The energy is transformed into kinetic energy.

• The energy is transformed into elastic energy.

• The energy is transformed into gravitational energy.

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What factors influence the amount of elastic energy in an object?

• stretching

• compression

• hardness

• mass

At which point on the roller coaster will the car have the greatest amount of kinetic energy?

• W

• X

• Y

• Z

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At which point on the roller coaster will the car have the greatest amount of gravitational energy?

• W

• X

• Y

• Z

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Select two (2) types of energy types that are present at point Y.

• kinetic energy

• elastic energy

• gravitational energy

• chemical energy

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As the roller coaster car travels from Point W to Point X, what happens to its gravitational energy?

• increases

• decreases

• remains the same

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As the roller coaster car travels from Point X to Point Y, what happens to its kinetic energy?

• increases

• decreases

• remains the same

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Which of the following changes would not change the energy of the roller coaster car?

• increasing the volume of the rollercoaster car

• increasing the height of the starting point of the rollercoaster car

• increasing the speed that the rollercoaster car is traveling

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