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Physical Science > Unit 2 Terminology PW2 > Flashcards

Unit 2 Terminology PW2 Flashcards

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Biology 101 flashcards
1
Q

Law of Reflection

A

an incident wave or particle will reflect at the same angle that it hit a barrier.

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2
Q

Regular Reflection

A

All rays in a beam of light are reflected at the same angle (smooth objects).

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3
Q

Diffuse Reflection

A

when the rays in a beam of light are scattered off a surface.

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4
Q

Reflex Reflection

A

when an incident ray is reflected back the way it came

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5
Q

Normal

A

a line that is perpendicular to the point of incidence.

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6
Q

Plane Mirror

A

Flat mirror

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7
Q

Point of incidence

A

The point where the light hits the mirror

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8
Q

Angle of Incidence

A

the angle between the normal and the incident ray.

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9
Q

Angle of Reflection

A

the angle between the normal and the reflected ray.

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10
Q

Virtual Images

A

an image light only appears to pass through.

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11
Q

Reflected ray

A

the incident angle after reflection

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12
Q

Curved Mirrors

A

Several tiny plane mirrors at slightly different angles.

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13
Q

Concave Mirrors

A

A curved mirror with a rough outside, converging mirror.

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14
Q

Convex Mirrors

A

A curved mirror with a rough inside, diverging mirror.

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15
Q

Vertex (v)

A

the geometrical center of a curved mirror.

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16
Q

Center of Curvature (C)

A

the geometrical center of the sphere the mirror is made from.

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17
Q

Principal Axis

A

a line that passes through the center of curvature and the vertex.

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18
Q

Radius of Curvature (R)

A

the distance from the center of curvature to the vertex.

19
Q

Focal Point (F)

A

a point on the principal axis halfway between C and V. Real on a concave mirror but virtual on convex.

20
Q

Focal Length (f)

A

distance between the focal point and the vertex.

21
Q

The principal rays for mirrors

A
  1. A ray travelling parallel to the principal axis will reflect through the focal point.
  2. A ray travelling through the focal point will reflect parallel to the principal axis.
  3. A ray travelling through C will reflect back in the same direction.
22
Q

Convex Mirror Characteristics

A

All images will be smaller, upright, virtual, and between the f and V.

23
Q

Medium

A

the substance light is travelling through.

24
Q

Refraction

A

when light travels from one medium to another it bends.

25
Q

Index of Refraction (n)

A

a comparison of the speed of light in that substance with the speed of light in a vacuum.

26
Q

Interface

A

The point at which two media meet.

27
Q

Point of Incidence

A

The point in the interface where the light bends.

28
Q

Refracted Ray

A

the ray that leaves the interface through the second medium.A

29
Q

Angle of Refraction

A

the angle between the refracted ray and the normal.

30
Q

Snells Law

A

n1<n2>n2 the light will bend away from the normal.</n2>

31
Q

Critical Angle

A

the angle of incidence producing an angle of refraction of 90 degrees.

32
Q

Total Internal Reflection

A

When the angle of incidence is greater than the critical angle, the ray reflects.

33
Q

Lens

A

a transparent optical device with a clear lens.

34
Q

Converging lens

A

thicker in the middle than at the ends.

35
Q

Optical Center (O)

A

The center of the lense.

36
Q

Principle Focus (F)

A

the point that rays travelling parallel to the principle axis appear to converge through. Converging lenses its always on the opposite side the light comes from.

37
Q

Secondary Focus (F1)

A

the focal point on the opposite side of the lens as F. Same side as the light for a converging mirror.

38
Q

Construction Line

A

The normal for a lens.

39
Q

Real Images

A

in a lens, a real image will appear on the opposite side the light came from.

40
Q

Virtual Images

A

appears on the same side the light originated from in a lens.

41
Q

Diverging Lens

A

thinner in the middle than on the ends.

42
Q

Principle ray for Diverging Lenses

A
  1. A ray travelling parallel to the principle axis will appear to refract from the principle focus.
43
Q

Principle rays for Converging Lenses

A
  1. A ray travelling parallel to the principle axis will refract through the principle focus.
  2. A ray travelling through the secondary focus will refract parallel to the principle axis.
  3. A ray travelling through O will continue.

Physical Science (3 decks)

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