Science Energy Unit

The method of heat transfer by which the Sun energy reaches the Earth is

• Conduction

• Convection

• Radiation

• Solaration

As a roller coaster goes downhill

• kinetic energy is converted into potential energy.

• potential energy is converted into kinetic energy.

• electrical energy is converted into potential energy.

• potential energy is converted into electrical energy.

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When gasoline is burned in a car engine, ________ energy is converted into _________ energy.

• heat, chemical

• chemical, potential

• mechanical, chemical

• chemical, mechanical

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An example of kinetic energy being converted into heat energy is

• the Sun.

• a generator.

• a Snickers bar.

• rubbing your hands together.

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Which is an example of electrical energy being converted or changed into light energy?

• the sun

• a light bulb

• a solar panel

• a glowstick at Halloween

A solar powered car converts _______________ energy into _________________ energy.

• light, chemical

• light, mechanical

• mechanical, light

• electrical, mechanical

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Microwave ovens heat food through the process of

• conduction.

• convection.

• radiation.

• stratification.

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The heat transfer depicted in the image is MOST likely

• Circulation

• conduction

• convection.

• radiation.

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Explain why a Chef in a very busy restaurant would prefer a copper pot over an aluminum pot.

• The copper pot would heat faster because it has a lower specific heat value.

• The copper pot would heat slower because it has a lower specific heat value.

• The copper pot would heat faster because it has a higher specific heat value.

• The copper pot would heat slower because it has a higher specific heat value.

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The law of conservation of energy states that

• energy may be created, destroyed or transformed.

• energy may be created, but only in certain types of nuclear reactions.

• energy may neither be created nor destroyed; it may only be transformed.

• the energy created by one process must be equal to that destroyed by another process.

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