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Science Grade 10 > Waves > Flashcards

Waves Flashcards

1
Q

number of waves produced by a source per unit time

A

frequency

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2
Q

cycles per second

A

frequency

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3
Q

Hertz or Hz

A

frequency

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4
Q

wavelength

A

distance between two successive points in phase with each other

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5
Q

Meter or M

A

wavelength

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6
Q

vector quantity of a wave

A

velocity

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7
Q

fill in the blanks: All EM waves are propagated with same speed equal to ——

A

3.0 x 10 (raise to 8) meters per second

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8
Q

consists of magnitude and direction

A

velocity

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9
Q

displacement travelled by the wave per unit time

A

velocity

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10
Q

Meters per second (m/s)

A

velocity

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11
Q

symbol of wavelength

A

lambda

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12
Q

fill in the blanks: All nonzero digits are ———

A

significant

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13
Q

fill in the blanks: —— between nonzero digits are significant

A

zeros

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14
Q

fill in the blanks: Zeros at the —— of a measurement are never significant

A

beginning

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15
Q

fill in the blanks: Zeros at the end of a measurement are significant if they contain a ——– ——

A

decimal point

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16
Q

fill in the blanks: A — on top of a zero makes it significant

A

bar

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17
Q

disturbance in a medium

A

wave

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18
Q

fill in the blanks: For addition and subtraction, the —- —- determine the final answer

A

place values

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19
Q

fill in the blanks: For multiplication and division, the number of ———– —— determine the final answer

A

significant digits

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20
Q

shorten expressions of very large or very small measurements

A

scientific notations

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21
Q

fill in the blanks: If the quantity is very small and you want to express it in scientific notation, the exponent is a ——– number

A

negative

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22
Q

fill in the blanks: If the quantity is very big and you want to express it in scientific notation, the exponent is a ——– number

A

positive

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23
Q

fill in the blanks: The first coefficient in a scientific notation comes ———- - — –.

A

between 1 and 10

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24
Q

What letter represents Planck’s constant?

A

h

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25
Q

What is the expression for h?

A

6.63 x 10 (raise to -34) J s

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26
Q

What does J mean?

A

joules

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27
Q

highest point in a transverse wave

A

crest

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28
Q

lowest point in a transverse wave

A

trough

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29
Q

two types of waves

A

mechanical

electromagnetic

30
Q

fill in the blanks: Mechanical waves are further classified based on the ——— – ———.

A

direction of vibration

31
Q

direction of vibration is perpendicular to the direction of propagation

A

transverse

32
Q

direction of vibration is parallel to the direction of propagation

A

longitudinal

33
Q

high density of particles in a longitudinal wave

A

compression

34
Q

low density of particles in a longitudinal wave

A

rarefaction

35
Q

transverse seismic waves

A

S waves

36
Q

longitudinal seismic waves

A

P waves

37
Q

type of transverse wave that can propagate through a vacuum (or air)

A

electromagnetic waves

38
Q

fill in the blanks: Electromagnetic waves are further classified based on their —— ————.

A

varied frequencies

39
Q

What does it mean when two successive points in a wave are in phase with each other?

A

They have the same mode of vibration or position.

They follow one another.

40
Q

Refers to how fast the wave is propagated and in what direction the propagation is

A

velocity

41
Q

fill in the blanks: Waves with —— frequencies have short ————

A

high, wavelengths

42
Q

fill in the blanks: Waves with low frequencies have —- ————

A

long wavelengths

43
Q

fill in the blanks: Having the same velocity, an EM wave with —- frequency has short ———- and vice versa

A

high, wavelength

44
Q

type of an EM wave with very high frequency or ultra high frequency

A

radio waves

45
Q

equal to 3.0 x 10 (raise to 8) m/s for EM waves

A

velocity

46
Q

region in the EM spectrum with the longest wavelength and lowest frequency

A

radio wave

47
Q

extraterrestrial sources of radio waves

A

Sun and Jupiter

48
Q

EM waves easily absorbed by water molecules thus used in cooking or heating food

A

microwaves

49
Q

EM waves sensed in the form of heat

A

infrared

50
Q

EM wave that can be separated into its component colors

A

visible light

51
Q

only part of the spectrum visible to the naked eye

A

visible light

52
Q

fill in the blanks: Too much exposure to ————– rays can cause skin cancer and damage to retina

A

ultraviolet

53
Q

EM waves that could cause cataracts with prolonged exposure

A

microwaves

54
Q

also known as Roentgen rays

A

x-ray

55
Q

two types of x-ray

A

soft x-ray

hard x-ray

56
Q

region in the EM spectrum used for destroying cancer cells through radiotherapy

A

gamma rays

57
Q

EM wave that can cause cancer and mutation

A

gamma ray

58
Q

EM waves emitted by radioactive materials

A

gamma rays

59
Q

What radioactive materials are present in gamma rays?

A

Cobalt-60

Cesium 137

60
Q

True or False: No single particle or object moved the entire distance of a wave. Only the energy is being transferred in a wave.

A

True

61
Q

property proportional to the frequency of EM waves

A

energy

62
Q

visible light with 760 nm

A

red

63
Q

visible light with 610 nm

A

orange

64
Q

visible light with 590 nm

A

yellow

65
Q

visible light with 550 nm

A

green

66
Q

visible light with 470 nm

A

blue

67
Q

visible light with 410 nm

A

violet

68
Q

energy transported per unit time and per unit area

A

wave intensity

69
Q

Watt/m (raise to 2)

A

wave intensity

70
Q

power delivered per unit area

A

wave intensity

71
Q

True or False: Many properties can be observed in both transverse or longitudinal waves. Some are exclusive for one type of wave only.

A

True

72
Q

The significand, the significant digits of a number in scientific notation or a floating-point number
‎

A

mantissa

Science Grade 10 (6 decks)

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