Nature of Light

The full range of frequencies of electromagnetic radiation is called

• visible light.

• radio waves.

• the electromagnetic spectrum.

• invisible radiation.

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The waves with the longest wavelengths in the electromagnetic spectrum are

• Infrared rays.

• radio waves

• gamma rays

• X-rays

What is the electromagnetic spectrum?

• The full range of wave frequencies of electromagnetic radiation is called the electromagnetic spectrum.

• The rainbow

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Shorter Waves have ____Energy,Longer Waves___Energy?

• Lower,Higher

• Higher,Lower

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What happens to the energy of light when it is absorbed by a new medium

• Nothing, because light doesn't interact with medium

• The light passes right through, so nothing happens

• The energy is absorbed by the medium and heats up

• The light is absorbed and converted to mechanical energy

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When light is reflected off a mirror, it can be modeled as a(n)

• inelastic collision

• elastic collision

• explosion

• light does not reflect off a mirror, it is all absorbed

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How are Electromagnetic waves different from Mechanical waves?

• EM waves have very short wavelengths

• EM waves transmit energy instead of matter

• EM waves can travel through the vacuum of space (without particles)

• EM waves can change direction by reflection

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Light waves are

• Mechanical

• Longitudinal

• Electromagnetic

• All of these

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The highest point on a light wave

• trough

• amplitude

• crest

• wavelength

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Material that allows light to pass through allowing you to see 'clearly' to the other side

• opaque

• translucent

• transparent

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