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Physical Science 10th > Chapters 17-18 Test Study Guide > Flashcards

Chapters 17-18 Test Study Guide Flashcards

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1
Q

A mechanical Wave moves through a medium which could be a _____,____,____

A
  1. Solid 2. Liquid 3. Gas
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2
Q

A disturbance sends ripples across water in a tub. These ripples are an example of a type of wave?

A

Surface wave

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3
Q

When a surfer rides an ocean wave on her surfboard. she is actually riding on what part of the wave?

A

A crest that is toppling over

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4
Q

To determine the speed of a wave, what formula?

A

Speed=(Wave Length)(Frequency)

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5
Q

A wave length of 15mm and a frequency of 4 Hertz. What is the speed?

A

60 m/s

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6
Q

How do you find the amplitude of a wave?

A

Use trough to rest position or crest to rest position

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7
Q

When a wave strikes a solid barrier, it behaves like a basketball hitting a backboard. This behavior is called what?

A

Reflection

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8
Q

Suppose two waves collide and the temporary combined wave that results is smaller than the original waves. What term best describes this interaction?

A

Destructive inference

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9
Q

A sound wave is an example of a what type of wave?

A

Longitudinal

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10
Q

A piano, violin, or guitar uses the resonance of a wooden soundboard to do what?

A

Amplify the sound

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11
Q

A ambulance siren… What scientific term would you use to explain how this happens?

A

The doppler effect

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12
Q

When a sound source approaches you, what happens to the pitch of the sound?

A

it becomes higher than when stationary

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13
Q

Which part of the ear amplifies the vibrations from sound waves?

A

Middle Ear

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14
Q

The part of the ear that sends coded nerve signals to the brain is what?

A

The inner ear

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15
Q

To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its ___?

A

Wavelength

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16
Q

Light acts like what?

A

Wave and particle

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17
Q

Photons travel outward from a light source in which direction?

A

All directions

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18
Q

How do Polarized glasses work?

A

Blocking waves that vibrate in one plane

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19
Q

When droplets of water in the atmosphere act like prisms, the colors in sunlight undergo what?

A

Dispersion

20
Q

What an object is made of and the color of light that strikes it determines what?

A

Color of an object

21
Q

What are the primary colors of light?

A

Red… Blue.. Green

22
Q

What are the primary colors of pigments?

A

Magenta.. Cyan…. Yellow (Same as secondary colors of light… Combines to black)

23
Q

Many streets and parking lots are illuminated with what type of light?

A

Sodium Vapor Lights

24
Q

Instead of crests and troughs, as in an ocean wave, a longitudinal wave has compressions and _______.

A

Rarefactions

25
Q

A pebble drops down into a tub of water, setting off _____ Waves that travel between the water and air.

A

Surface

26
Q

In a transverse wave, _____ is measured from crest to crest or from trough to trough

A

Wavelength

27
Q

TO determined the speed of a wave, you must know the waves wave length and ____.

A

Frequency

28
Q

If a wave length of 2 m and a frequency of 3 hertz, its speed is _____

A

2 M/S

29
Q

To compare the energy of different waves, measure the _______ of the waves.

A

Amplitude

30
Q

Amplitude measures the greatest displacement of a wave from the ______.

A

Rest position

31
Q

If two waves collide and form a temp. larger wave, the interference is ____.

A

Constructive

32
Q

The standard measure used to compare sounds intensities is the ___.

A

Decibel

33
Q

When I train streaks by blowing it’s whistle, the changing picture here is due to the ______.

A

Doppler Effect

34
Q

The further away you are from a light source the____ intense it is

A

Less

35
Q

Electromagnetic waves can travel through a

A

Vaccuum

36
Q

Visible light waves have a shorter _____ then infared waves have

A

Wave length

37
Q

What unit is way frequency measured?

A

Hertz

38
Q

Supposed to waves meet and temporarily cancel each other out. How would you describe the inference?

A

Destructive

39
Q

What is the Doppler Effect?

A

Sound approaches higher frequency, sound moves away lower frequency

40
Q

Use the scattering of light to explain why the sun is red at sunset

A

Blue light scattered by small particles leaving red and orange

41
Q

What type of light passes through a polarizing filter?

A

White that vibrates in one plane

42
Q

What two factors influence the color of an object?

A

The color of light striking

43
Q

Both wave A and wave B were started by the same type of force and up-and-down motion. What conclusion can you make about the energy of these two wave starting forces?

A

Force causeway A to have more energy

44
Q

Explain why the pencil appears to be broken

A

Light moves as it goes through one medium to another so it appears broken

45
Q

Figure represents white light striking an object. Explain why the beam of light is also labeled with colors

A

White light is made up of all the frequencies that produce colored light

46
Q

Was a wave movement during one second. What is the frequency of this wave?

A

2 hertz

47
Q

To what is amplitude related

A

Related to the amount of energy carried by a wave to maximum displacement from rest position

Physical Science 10th (6 decks)

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