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Physical Science > Waves > Flashcards

Waves Flashcards

1
Q

What is reflection?

A

The change in direction of a wave front at an interference between two different media

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2
Q

What is refraction?

A

The bending/changing of waves as they move from one medium to another

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3
Q

How do circular waves reflect when they hit a circular barrier?

A

Reflects back as straight waves

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4
Q

How do circular waves reflect when they hit a straight barrier?

A

Reflected as circular waves
EXTRA:
- the reflected waves look like they started an equal distance behind the barrier

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5
Q

How do straight waves reflect when they hit a straight barrier?

A

They reflect straight back

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6
Q

How do straight waves reflect when they hit a curved barrier?

A

Reflects back as circular wave

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7
Q

What are the laws of reflection?

A
  1. The angle of incidence=the angle of reflection

2. The incident ray, reflected ray, and the normal all lie on the same plane

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8
Q

What is the speed of light?

A

3.0 x 10^8 m/s

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9
Q

What are three sources of light?

A
  • sun
  • fire
  • lightbulb
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10
Q

How do we know light travels in a straight line?

A

Light doesn’t spread out

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11
Q

How do we see images?

A

Light is reflected off of the object and into the eye

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12
Q

What is the size of an image in a plane mirror?

A

Same size

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13
Q

What is the orientation/attitude of an image in the plane mirror?

A

Upright

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14
Q

What is the location of an image in a plane mirror?

A

Same distance behind as it is in front

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15
Q

What type of image is shown in a plane mirror?

A

Virtual

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16
Q

What is the size of an image in s convex mirror?

A

Smaller

17
Q

What is the orientation/attitude of an image in a convex mirror?

A

Upright

18
Q

What is the location of an image in a convex mirror?

A

Behind the mirror

19
Q

What type of image is shown in a convex mirror?

A

Virtual

20
Q

What is the size of an image on a concave mirror- inside the focal length?

A

Larger

21
Q

What is the orientation/attitude of an image in a concave mirror-inside the focal length?

A

Upright

22
Q

What is the location of an image in a concave mirror-inside the focal length?

A

Further away

23
Q

What type of image is shown in a concave mirror-inside the focal length?

A

Virtual

24
Q

What is the size of an image in a concave mirror-beyond the focal length?

A

Smaller

25
Q

What is the orientation/attitude of an image in a concave mirror- beyond the focal length?

A

Inverted

26
Q

What is the location of an image in a concave mirror- beyond the focal length?

A

Don’t know

27
Q

What type of image is shown on a concave mirror- beyond the focal length?

A

Real

28
Q

What type of lens is used to correct nearsightedness?

A

Diverging/Concave lens

29
Q

What type of lens is used to correct farsightedness?

A

Converging/Convex lens

30
Q

What happens when water waves travel at an angle into a slower medium?

A
  • speed decreases
  • wave length decreases
  • amplitude decreases
  • direction changes: waves bend left/behind
31
Q

What happens when water waves travel at an angle into a faster medium?

A
  • speed increases
  • wave length increases
  • amplitude increases
  • direction changes: waves bend right/in front

Physical Science (2 decks)

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