Electromagnetic Radiation

Electromagnetic Radiation travels as _______ and spreads out from its source.

• visible light

• matter

• waves

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The distance from one crest to the next.

• wavelength

• frequency

• light year

• hertz

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The number of waves that pass a fixed point in unit time

• astronomical unit

• frequency

• wavelength

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A packet "particle" of electromagnetic energy is known as a

• neutron

• photon

• Hertz

• proton

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Electromagnetic radiation can sometimes behave like _______ and at other times like __________. Choose two.

• a wave

• a particle

• gravity

• matter

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Which type of electromagnetic radiation has the most energy?

• x rays

• gamma rays

• radio waves

• visible light

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Which type of electromagnetic radiation has the lowest frequency?

• radio waves

• gamma rays

• visible light

• ultraviolet

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Which given type of electromagnetic radiation has the lowest energy?

• infrared

• ultraviolet

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Which visible light has the most energy?

• yellow

• violet

• red

• green

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What determines the type of electromagnetic radiation emitted by the Sun, stars, and other dense astronomical objects?

• temperature

• density

• gravitational force

• age

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