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Grade 10 Physics > Key Terms Chapter 10 - Light And Reflection > Flashcards

Key Terms Chapter 10 - Light And Reflection Flashcards

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1
Q

Incandescence

A

Light emitted from a material because of the high temperature of the material

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2
Q

Fluorescence

A

Light that is emitted due to the exposure of the source to UV light

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3
Q

Luminescence

A

Emission of light by a material that has not been heated

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4
Q

Phosphorescence

A

Light that is emitted due to the exposure of the source to UV light, excited atoms retain energy and light is emitted for prolonged periods of time

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5
Q

Chemiluminescence

A

Light that is produced by a chemical reaction, no ride in temperature

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6
Q

Bioluminescence

A

Light that is produced due to a biochemical reaction in a living organism

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7
Q

Wavelength

A

Distance from one crest/trough of a wave to the next

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8
Q

Reflection

A

The change in direction of a light ray when it bounces off a surface

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9
Q

Medium

A

The substance through which light travels

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10
Q

Ray

A

A straight line with arrowhead that shows which way light waves are travelling

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11
Q

Incident Ray

A

A ray of light that travels from a light source to an object

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12
Q

Angle of incidence

A

The angle between the incident ray and the normal in a ray diagram

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13
Q

Normal

A

A line that is perpendicular to a surface where a Ray of light meets the surface

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14
Q

Reflected ray

A

Begins at the point where the incident Ray and normal meet

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15
Q

Angle of reflection

A

Between reflected Ray and normal in Ray diagram

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16
Q

Plane mirror

A

A mirror with a flat, reflective surface

17
Q

Virtual image

A

Image formed by rays that appear to be coming from a certain position, but are not, image does not perform a visible projection on a screen

18
Q

Concave mirror

A

Mirror whose reflecting surface curves inward

19
Q

Principle axis

A

On a concave mirror, the line that passes through the centre of curvature of the mirror and is normal to centre of mirror

20
Q

Focal point

A

Point on principle axis through which reflected rays pass when incident rays are parallel to and near the principle axis

21
Q

Focal length

A

Distance between vertex of a mirror and the focal point

22
Q

Real image

A

An image formed when reflected rays meet

23
Q

Magnification

A

Change in size of an optically produced image

24
Q

Spherical aberration

A

Irregularities in an image in a curved mirror that result when reflected rays from the outer parts of the mirror do not go through the focal point

25
Q

Convex mirror

A

Mirror reflecting surfaces curves outward

Grade 10 Physics (6 decks)

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