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9th Grade Flashcards > Science Chapter 8 > Flashcards

Science Chapter 8 Flashcards

1
Q

the book published by Isaac Newton that laid the foundation for the modern scientific study of light

A

Opticks

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2
Q

the idea that light is a stream of tiny particles emitted by a light source

A

particle theory of light

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3
Q

the idea that developed that says that light consists of of waves, not particles

A

wave theory of light

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4
Q

developed the particle theory of light

A

Isaac Newton

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5
Q

developed the wave theory of light

A

Christiaan Huygens

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6
Q

developed the idea that light consists of two transverse waves oscillating at right angles to each other

A

James Clerk Maxwell

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7
Q

a wave consisting of two transverse waves, one electric and one magnetic, oscillating at right angles to each other

A

electromagnetic wave

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8
Q

developed the idea of the existence of invisible electromagnetic waves

A

Heinrich Hertz

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9
Q

speed of light

A

3.00 x 10 to the 8th m / s

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10
Q

a phenomenon that occurs when light above a certain frequency knocks electrons loose from atoms of certain metals

A

photoelectric effect

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11
Q

developed the idea of the wave-particle duality of light

A

Max Planck and Albert Einstein

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12
Q

the theory stating that light has both a wave nature and a particle nature

A

quantum theory of light

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13
Q

a tiny bundle or packet of energy

A

photon

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14
Q

electromagnetic waves traveling as photons

A

light

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15
Q

the electromagnetic waves that the human eye can perceive

A

visible light

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16
Q

the range of electromagnetic waves that the human eye can perceive as having color

A

visible spectrum

17
Q

a mixture of all the colors of light

A

white

18
Q

less-intense white light

A

gray

19
Q

the absence of color

A

black

20
Q

separates white light into its component colors by refracting (bending) the light that passes through it

A

prism

21
Q

red, green, and blue; the three colors of light that can be mixed to create the illusion of almost any color

A

additive primary colors

22
Q

cells that only detect light and dark

A

rod cells

23
Q

cells that detect color

A

cone cells

24
Q

cyan, magenta, and yellow; three colors of pigment that can be mixed to produce the illusion of almost any color

A

subtractive primary colors

25
Q

__________ always refer to mixing light, and __________ always refer to mixing pigments

A

additive primary colors and subtractive primary colors

26
Q

the angle of incidence equals the angle of reflection

A

law of reflection

27
Q

appears to be behind the mirror; no light actually passes through the image location

A

virtual image

28
Q

image which forms in front of the mirror

A

real image

29
Q

a mirror in which the reflecting side is on the inside of the spherical surface of a mirror

A

concave mirror

30
Q

a mirror in which the reflecting side is on the outside of the spherical surface

A

convex mirror

31
Q

the bending of the path of a wave as a result of a change in wave speed, usually caused by crossing the boundary between two media

A

refraction

32
Q

a piece of glass or other substance specifically designed to refract light

A

lens

33
Q

a lens that curves outwards and causes rays of light passing through it to bend inward and converge on a point

A

convex lens

34
Q

a lens that curves inwards, like the opening of a cave, and causes rays of light passing through it to bend outward

A

concave lens

35
Q

one of the best-known devices that uses lenses

A

camera

36
Q

an illusion that occurs when the light rays from a distant object are refracted by heated air so that the object appears to be nearby

A

mirage

37
Q

twinkling of stars caused by refraction of light

A

scintillation

9th Grade Flashcards (76 decks)

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