Energy Review

If the motion of an object is increased, which type of mechanical energy was gained by the object?

• chemical energy

• kinetic energy

• gravitational potential energy

• electromagnetic energy

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Which energy-conversion process occurs whenever coal is burned?

• chemical to thermal

• chemical to electrical

• mechanical to thermal

• mechanical to electrical

Which form of energy does a car's engine

convert into mechanical energy?

• light

• wind

• chemical

• gravitational

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Which type of energy is changed by plants into chemical energy?

• solar

• nuclear

• thermal

• gravitational

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As a roller coaster car travels down a hill, which

type of change in energy allows it to speed up?

• potential energy changing into heat energy

• potential energy changing into kinetic energy

• kinetic energy changing into heat energy

• kinetic energy changing into potential energy

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The diagram shows a 21.7kg ball located on a

shelf 1.6m above the ground. Which best

describes the energy of the ball?

• Its energy is lost once it falls off the shelf.

• Its energy depends upon the speed the ball will travel.

• It has mechanical energy in the form of potential energy..

• It has mechanical energy in the form of kinetic energy.

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The diagram shows a mass suspended on a string called a pendulum. What energy transformation occurs as the mass moves from point A to B?

• Kinetic energy is converted to potential energy.

• Potential energy is converted to kinetic energy.

• Chemical energy is converted to electromagnetic energy.

• Gravitational energy is converted to chemical energy.

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How does the energy of a roller coaster cart change as the cart travels from the top of the roller coaster to the bottom?

• The cart has greater kinetic energy at the top than it does at the bottom.

• The cart has no energy at the top and more energy at the bottom.

• The cart has less potential energy at the top than it does at the bottom.

• The cart has potential energy at the top that is transformed to kinetic energy as it moves to the bottom.

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Which statement is true about the work done in

lifting a box?

• Energy is transferred to the box from the lifter.

• Energy is transferred to the lifter from the box.

• The energy of the box remains constant.

• The energy of the lifter remains constant.

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What happens when a pebble lying on the

ground is kicked?

• Energy is completely lost.

• Energy is transferred.

• Energy is destroyed.

• Energy is created.

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