Science Fundamentals Ch.13

Which is a form of energy an object has if it is moving?

• thermal energy

• potential energy

• kinetic energy

• entropy

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Almost all the energy that we use can be traced back to which source?

• the Sun

• water

• the atmosphere

• outer space

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What type of energy transformation occurs during photosynthesis in plants?

• thermal to chemical

• radiant to chemical

• thermal to mechanical

• radiant to mechanical

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What does the law of conservation of energy state?

• that energy cannot be transformed from one form to another

• that one form of energy cannot be transformed into two other forms at the same time

• that energy cannot be created or destroyed

• that energy can be created or destroyed only during energy transformations

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Which has the most potential energy?

• a two-pound brick three feet off the ground

• a two-pound brick five feet off the ground

• a four-pound brick three feet off the ground

• a four-pound brick five feet off the ground

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What is the thermal energy of an object?

• the sum of the kinetic and potential energy of an object due to the random motion of the particles

• the energy of an object due to large scale motions and interactions

• the energy that is carried by electromagnetic waves

• The energy that is stored in the nuclei of the atoms of the object

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What type of energy is represented here?

• thermal

• chemical potential

• elastic potential

• radiant

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What energy transformation does friction cause?

• radiant to thermal

• mechanical to thermal

• thermal to radiant

• thermal to mechanical

During energy transformations, energy is never __________.

• released as heat

• used to increase an object's potential energy

• created or destroyed

• completely transformed

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Which of the following is an example of electrical energy?

• lightning

• the Sun warming a windowsill

• burning wax producing a flame

• your body utilizing food to maintain your internal temperature

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