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Physical Science > Waves > Flashcards

Waves Flashcards

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0
Q

What are electromagnetic waves?

A

Waves that do not need a medium and can travel through a vacuum.

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1
Q

What are mechanical waves?

A

Waves that need a medium to travel through

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2
Q

What is a transverse wave

A

A wave in which the particles of the medium move perpendicular to the direction the wave is traveling.

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3
Q

What is a longitudinal/compressional wave?

A

A wave in which the particles of the medium move parallel to the direction the wave is traveling.

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4
Q

What is the highest part of a transverse wave?

A

The crest.

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5
Q

What is the lowest part of a transverse wave?

A

The trough.

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6
Q

What is the wavelength?

A

The distance between two corresponding parts of a wave

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7
Q

What is the amplitude?

A

The maximum distance that the particles of a medium move from the rest position.

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8
Q

What is the equilibrium?

A

The rest position.

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9
Q

What is the speed of light in order of fastest to slowest?

A

vacuum —> gas —> liquid —> solid

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10
Q

What is the speed of sound in order from fastest to slowest?

A

solid —> liquid —> gas —> vacuum

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11
Q

The speed of a wave depends on what?

A

The medium it is traveling through.

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12
Q

What is frequency?

A

The number of full wavelengths that pass in a given time interval,
cycles or waves per second.

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13
Q

What is period?

A

The time it takes for a wave to pass, seconds per cycle or wave.

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14
Q

The ray of refraction bends towards the normal when _______ and away from the normal when _______.

A

Slowing down, speeding up.

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15
Q

What type of interference adds to waves?

A

Constructive

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16
Q

What kind of interference takes away from the wave?

A

Destructive

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17
Q

The longer the wavelength, the _______ the pitch.

A

Lower

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18
Q

The shorter the wavelength, the ________ the pitch.

A

Higher

19
Q

What is a wave?

A

A disturbance that transfers energy from place to place.

20
Q

What is refraction?

A

The bending of waves due to a change in speed.

21
Q

What is diffraction?

A

The bending of waves around the edge of a barrier.

22
Q

What is interference?

A

The interaction between two waves that meet.

23
Q

What is a standing wave?

A

When and incoming wave combines with a reflected wave in such a way that it appears to be standing still.

24
Q

What are the highest and lowest points on a standing wave called?

A

Antinodes

25
Q

How does a wave travel through a medium?

A

The wave’s energy passes from particle to particle.

26
Q

Frequency is measured in units called _______.

A

Hertz

27
Q

Why do you see lightning from a distant storm before you hear thunder?

A

Light travels faster than sound.

28
Q

A material that reflects or absorbs any light that strikes it is _______.

A

Opaque

29
Q

What is a concave mirror?

A

A mirror with a surface that curves inward like the inside of a bowl.

30
Q

What happens when sound passes from air into water?

A

Its speeds up.

31
Q

What is a lens?

A

A curved piece of glass or other transparent material that is used to refract light.

32
Q

What are the primary colors of light?

A

Red, green, and blue

33
Q

What is a telescope?

A

An instrument that uses lenses or mirrors to collect and focus light form distant objects.

34
Q

What is monochromatic light?

A

Light that continually produces the same wavelength.

35
Q

What is polychromatic light?

A

Light that produces varying wavelengths.

36
Q

What is an example of longitudinal wave?

A

Sound.

37
Q

The speed of sound depends on what?

A

The properties of the medium it is traveling through.

38
Q

You can hear sounds from around corners because of ________.

A

Diffraction

39
Q

In a vacuum, all electromagnetic waves have the same _________.

A

Speed.

40
Q

What type of image do concave mirrors form?

A

Real

41
Q

What is the focal point?

A

The point where the light rays meet.

42
Q

In a wave, energy ________.

A

Spreads out

43
Q

What is reflection?

A

The result of a wave striking a surface or boundary.

44
Q

What is an example of a transverse wave?

A

Light

Physical Science (6 decks)

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