Crash Course Light

What type of energy is transmitted from the Sun to Earth through space?

• heat energy

• kinetic energy

• electrical energy

• electromagnetic energy

Which statement is true about visible light?

• Humans cannot see any light from the electromagnetic spectrum.

• Visible light makes up a small part of the electromagnetic spectrum.

• Visible light has a frequency equal to that of gamma rays.

• Humans can see visible light only as white light.

The diagram below shows waves that are

• seismic.

• mechanical.

• longitudinal.

• electromagnetic.

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A class made a solar cooker out of a large can. What color should they paint the can in order to collect the MOST heat?

• black

• green

• pink

• white

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How did the moths in the video adapt to the change in their ecosystem?

• Pollution killed all of the black moths, so they are extinct.

• The lighter moths ate all of the darker moths.

• When trees were light, more light moths survived. When trees were dark, more dark moths survived.

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What is the primary function of a prism in the study of light?

• To absorb light

• To reflect light

• To disperse light into its component colors

• To magnify light

Which of the following colors of light has the shortest wavelength?

• Red

• Green

• Blue

• Violet

What phenomenon explains the bending of light as it passes from air into water?

• Reflection

• Refraction

• Diffraction

• Dispersion

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In the context of light, what does the term 'spectrum' refer to?

• A single color of light

• The range of different colors of light

• The intensity of light

• The speed of light

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Which instrument is used to measure the intensity of light?

• Thermometer

• Barometer

• Photometer

• Spectrometer