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Physical Science > Chapter 16 Final > Flashcards

Chapter 16 Final Flashcards

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Biology 101 flashcards
1
Q

In a vacuum, the speed of light is _________

A

3 x 10^8 m/s

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2
Q

Interference between two waves can produce a wave that has a ________

A

Larger amplitude or smaller amplitude

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3
Q

What involves waves changing direction?

A

Refraction, diffraction and reflection

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4
Q

Draw a longitudinal wave and a transverse wave in the space below. On each wave, indicate the wavelength. On the transverse, indicate the amplitude

A

-

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5
Q

How can you determine the frequency of a wave?

A

The frequency can be known by counting the number of wavelengths that go past a point in a certain amount of time. The equation for frequency is, frequency = 1/T

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6
Q

What affects the speed of sound?

A

temperature

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7
Q

What affects the loudness of a sound?

A

Intensity of the waves

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8
Q

What affects the pitch of a sound?

A

Frequency of the waves

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9
Q

Nerve fibers send an impulse to the brain when the waves reach the ___________

A

Cochlea

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10
Q

To hear, what takes place?

A

The ear sense vibrations in the air
The ear amplifies the vibrations
The ear transmits signals to the brain

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11
Q

What causes the sound of a guitar to get louder as it is played?

A

resonance

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12
Q

What is used to measure distance?

A

Ultrasound

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13
Q

Sonar uses __________

A

Ultrasound

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14
Q

What device uses sound waves to view organs inside the body?

A

Sonogram

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15
Q

Because its molecules are far apart, sound waves will travel slowly through ________

A

cold air

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16
Q

Light demonstrates wave characteristics when it is ________

A

Reflected, refracted and diffracted.

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17
Q

Light demonstrates particle characteristics when it __________

A

Knocks electrons off a metal surface

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18
Q

As the frequency of light waves increases, __________

A

The energy increases

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19
Q

The rate at which energy flows through a given space describes light ___________

A

Intensity

20
Q

Electromagnetic waves that give off heat

A

Infrared rays

21
Q

Electromagnetic waves that can carry telecommunication signals and cook food

A

Microwaves

22
Q

Electromagnetic waves with high energy that can cause sunburn

A

Ultraviolet rays

23
Q

Electromagnetic waves used in medicine to kill cancer cells and view bones

A

X rays and gamma rays

24
Q

Electromagnetic waves used for television, AM, and FM radio signals

A

Radio waves

25
Q

Electromagnetic waves used to determine the location of objects in a room

A

Visible light

26
Q

Light rays reflecting off a smooth surface reflect ______

A

In one new direction

27
Q

Light rays reflecting off a rough surface reflect ________

A

At all angles

28
Q

The law of reflection says the angle of incidence is _________ the angle of reflection.

A

Equal to

29
Q

Reflection of light into random directions is called

A

Diffuse reflection

30
Q

A virtual image ___________

A

Appears behind a mirror

31
Q

An apple appears red to your eye because it _______

A

Reflects red light

32
Q

When you look in a convex mirror, the image appears

A

Smaller than it really is

33
Q

In addition to reflecting some light, every object

A

Absorbs some light

34
Q

A real image can be formed using a

A

Concave mirror

35
Q

When all three additive primary colors are mixed, you see the color

A

White

36
Q

When light moves from a material in which its speed is higher to one in which its speed is lower, the ray is

A

Bent toward the normal

37
Q

A mirage is caused by

A

Refracting light

38
Q

Light entering the eye is focused to produce an image on the

A

Retina

39
Q

A prism separates white light into different colors through a process called

A

Dispersion

40
Q

The increase of an object’s apparent size by using lenses of mirrors

A

Magnification

41
Q

Consists of two or more plane surfaces of a transparent solid at an angle with each other

A

Prism

42
Q

A transparent object that refracts light waves such that they converge or diverge to create an image

A

Lens

43
Q

A lens that bends light waves inward

A

Convergent lens

44
Q

Bending of light when crossing between mediums

A

Refraction

45
Q

A lens refracting light waves so that they bend outward

A

Divergent lens

46
Q

Sound waves are examples of _____________

A

Longitudinal waves

Physical Science (4 decks)

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