Light Review

Which is true about light?

• Light travels only as a stream of particles

• Light travels the same speed through all different mediums

• Light travels 186,000 miles per second through space

• Light is a mechanical wave that must have a medium to travel

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Which statement about light is FALSE?

• Light has a dual nature; it acts like both a wave and a stream of photons

• Light can be refracted, reflected, transmitted, absorbed and scattered by substances

• Light is a form of electromagnetic radiation that humans can see.

• Light travels as a longitudinal wave.

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What is the range of electromagnetic radiation wavelengths in nm that humans can see? (smallest wavelength to largest wavelength)

(a)  

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Which statement is True about electromagnetic radiation?

• The seven forms of emr have different wavelengths

• The seven forms of emr have different frequencies

• The seven forms of emr have carry different amounts of energy

• All are true.

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What is the biggest factor in causing the straw to look broken?

• Light is being reflected

• Light is being refracted

• Light is being scattered

• Light is being transmitted

What is it called when light bends?

(a)  

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Light will bend when.....

• it enters a new medium with a different density

• it slows down or speeds up

• it enters a different substance at an angle

• all are true

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Scientists figured out that white light was made of (a)   because of what they saw as light was transmitted through a prism.

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Each color bends a certain amount based upon its

(a)  

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We see a banana as yellow because it _____the yellow wavelength and ______the red, orange, green, blue, indigo and violet wavelengths

(a)  

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