SSA Quiz #5: Forms of Energy and Energy Transformations

[7.P.10.1] Visible light is made up of a spectrum of many different colors as shown in the illustration below.

Which color of visible light has the shortest wavelength?

• blue

• red

• violet

• yellow

[7.P.10.2] Light that is reflected off of objects can be detected by our eyes. This is why you can see your image in a mirror. Why can’t you see your image reflected off of a wall?

• Your eyes detect all of the reflected light.

• A wall absorbs all of the light that strikes it.

• Light waves do not travel far after striking an object such as a wall.

• Not all of the light that reflects off of a wall is directed toward your eyes.

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[7.P.11.3] Katrina replaced the batteries in her camera with rechargeable ones. Later as she was recharging the batteries, Katrina told her mother “I am creating energy so that I can use these batteries again!” What was Katrina actually doing?

• removing energy

• transforming energy

• destroying energy

• repairing energy

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[6.p.11.1] According to the law of conservation of energy, what happens to mechanical energy if the potential energy of an object decreases?

• Mechanical energy decreases.

• Mechanical energy increases.

• Mechanical energy remains unchanged.

• There is no mechanical energy.

[7.P.10.3] While watching a popular science fiction movie, space vehicles loudly shoot each other with lasers and explode with a booming sound. Students of science know that sound does not travel through space and these movie scenes showing space sounds are factually incorrect.  Why are there no sounds in space? 

• Sound waves travel as transverse waves

• Sound waves require a medium

• Sound waves can only travel through air particles

• Sound waves have high frequencies

[7.P.10.2] The image below shows light entering water.Which statement explains why light bends when it reaches the surface of the water?

• Light bends because water changes the amount of energy it carries.

• Light bends because water absorbs some of the light that reaches it.

• Light bends because the water reflects some of the light that reaches it.

• Light bends because water changes its speed when it moves from air into water.

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[7.P.11.3] Patrice slides a textbook across a table. Shortly after the book is released from her hand, it begins to slow down and appears to lose energy. Which statement BEST explains where the energy goes as the book slows down?

• It is transferred to the air in the form of potential energy.

• It is transferred to the table in the form of thermal energy.

• It is transferred to the book in the form of potential energy.

• It is transferred to Patrice’s hand in the form of thermal energy.

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[7.P.11.4] What happens when a solid melts?

• its molecules move farther apart

• its molecules move closer together

• the speed of its molecules decreases

• the temperature decreases although heat is added

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[6.P.11.1] Energy can occur in many forms.  Which of the following terms BEST describes kinetic energy?

• Motion

• Light

• Height

• Volume

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[7.P.10.2] Kareem told his friend about the beautiful rainbow he saw just after a rainstorm. Kareem then correctly explained to his friend how a rainbow forms. What was Kareem’s explanation?

• The light waves were refracted by moisture in the air and separated into colors.

• Tiny droplets of water absorbed the light waves that struck them.

• Light traveled faster after the rainstorm because of the moisture in the air.

• The brightness of light increased as the waves passed through tiny droplets of

  water.

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