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8th Grade Science > Waves Test > Flashcards

Waves Test Flashcards

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1
Q

What is a wave

A

A disturbance that transmits energy

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2
Q

What is a medium

A

A substance through which a wave can originate (gasses, liquids, solids)

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3
Q

Describe a transverse wave

A

A wave that moves perpendicular

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4
Q

Describe a longitudinal wave

A

A wave that moves parallel

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5
Q

What type of wave is sound

A

A longitudinal wave that needs a medium

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6
Q

What is an electromagnetic wave, what makes it different from the other waves?

A

Waves that don’t need a medium and can travel through a vacuum

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7
Q

What is a crest

A

The highest part of a wave

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8
Q

What is the trough

A

Lowest part of the wave

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9
Q

What is amplitude

A

The distance from midpoint to crest

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10
Q

What is wave length

A

Distance from crest to crest

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11
Q

What is frequency

A

Number of crests in a wave (hertz)

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12
Q

What is the only part of the electromagnetic spectrum we can see

A

Visible light

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13
Q

What is the acronym for visible light

A

ROY G BIV

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14
Q

How are we able to see objects in different colors

A

The surface of an object reflects while the rest is absorbed

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15
Q

What happens to the energy as the wavelength shortens

A

The energy increases

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16
Q

What happens to the energy as the wavelength increases

A

The energy decreases

17
Q

What is reflection

A

When light bounces back

18
Q

What is refraction

A

As light bends when it moves through one medium to another

19
Q

What is diffraction

A

When light passes through something so it bends

20
Q

What is absorption

A

When colors are either reflected or absorbed

21
Q

Does sound travel faster in a solid, liquid, or gas.

A

Gas because the molecules are more spread out

8th Grade Science (1 decks)

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