Introduction to Energy Answers

Which image best represents an animal exhibiting kinetic energy?

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Which statement best defines energy?

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A catapult’s lever holds a cannonball. The lever is attached to a tightly held rope. When the rope is released, the lever springs forward and launches the cannonball. When the rope is held tightly, which form of energy does it possess?

Joshua is holding a book near shoulder-height. Use the drop-down menus to indicate what happens to the gravitational potential energy of the book if he places it on each shelf. shelf A shelf B shelf C

Classify the forms of energy described in each scenario by filling in the correct term. A windmill’s blades move from the blowing wind. The movement of the blades represents energy. The visible light that allows people to see where they are going describes energy.

Bridget is riding her bicycle up a hill. Which statements are correct? Select five options.Bridget is transferring energy to the bicycle.The bicycle is using energy to do work.Bridget has kinetic energy.The bicycle has potential energy.Bridget has nuclear energy.The bicycle has mechanical energy.

A yellow ball with a mass of 2 kg is rolling across the floor at 3 m/s. A red ball with a mass of 3 kg is rolling across the same floor at 3 m/s. Which ball has greater kinetic energy, and why?

Inside stars in space, the nuclei of hydrogen atoms fuse together to form helium atoms. This represents which form of energy?