physics word quarter 4 part 2

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vibrate

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Physics

2nd

27 Terms

1

vibrate

move back and forth rapidly

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2

variable

something that can change or vary in an investigation

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3

pitch

how high or low a note is

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4

wave

a transfer of energy with no net transfer of mass

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5

medium

the material through which a wave can travel

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6

periodic wave

a repetitive series of pulses; a wave sequence in which the particles of the medium undergo periodic motion; that s after a fixed time the medium returns to its starting point then repeats

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7

crest

the highest point of displacement of a wave

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8

trough

the lowest point of displacement of a wave

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9

amplitude

the maximum displacement of a particle as a wave passes the height of a wave crest; it is related to the waves energy

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10

wavelength

the distance between two identical points of a wave

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11

frequency

the number of waves produced per unit time

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12

period

the time required to complete one cycle of a wave

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13

transverse wave

a wave in which the medium is perpendicular to the motion of the wave

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14

longitudinal wave

a wave in which the motion of the medium is parallel to the direction of the motion of the wave

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15

standing wave

a wave pattern that remains in a constant position

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16

node

a point on a standing wave where the medium is motionless

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17

antinode

a point on a standing wave where the displacement is the largest

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18

inverse relationship

a relationship in which decreasing one variable increases the other variable or vise versa

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19

direct relationship

a relationship in which increasing one variable increases the other or vise versa

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20

umbra

the part of the shadow that gets no light

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21

penumbra

the part of the shadow that gets partial light

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22

angle of incidence

the angle formed between an incident ray and the normal

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23

angle of reflection

the angle formed between a reflected ray and the normal

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24

incident ray

the ray of light that strikes a surface

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25

reflected ray

the yat of light that reflects off a surface

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26

normal

a line that is perpendicular

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27

law of relfection

a law for mirrors that states that the angle of incidence is equal to the angle of reflection

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