Waves and Energy Review

Waves are produced by:

• Tides
• Vibrations
• Sound
• Molecules

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What properties do all waves have in common?

• Wavelength and frequency 
• Pitch and amplitude
• Matter and medium
• Temperature and amplitude

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Heat and light are produced on and in the sun through

• Burning gases
• Light waves
• Nuclear reactions 
• Electromagnetism

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Heat and light energy are produced in the sun. The earth is warmed by the

• Heat energy produced in the sun
• Light energy produced by the sun
• Reflected light energy from the sun
• Heat waves emitted by the sun

Choose the answer that describes the combination of all the colors in the visible light spectrum.

• The absence of light
• Ultraviolet light
• White light
• Reflected light

Ultraviolet rays from the sun are able to reach Earth's surface because

• They require air to travel through
• They have more energy than infrared rays
• They can travel through empty space
• They can travel through clouds

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Frequency is

• The amount of time of one wave cycle
• The number of wave cycles per unit of time
• The length of one wave crest to another crest
• The length of one wave cycle

What needs to happen to produce a rainbow?

• White light is refracted through a raindrop, splitting into the colors of the visible spectrum
• White light is reflected off of a raindrop, splitting into the colors of the visible spectrum

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When light strikes matter it can pass through, be absorbed or reflected. Objects that allow light to pass through are

• Transparent or translucent
• Solid and shiny
• Hollow tubes
• Opaque solids

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Refraction occurs when 

• Light bounces off a different medium
• Light travels from one medium to another
• Shadows are cast
• Waves are produced

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