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physics > waves > Flashcards

waves Flashcards

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1
Q

what type of wave is a sound wave?

A

longitudinal wave

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2
Q

what wave does earthquake or explosions produce?

A

seismic wave

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3
Q

what equipment is used to detect seismic wave?

A

seimometer

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4
Q

is seismic wave longitudinal wave or transverse wave?

A

seismic wave is both longitudinal wave and transverse wave

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5
Q

examples of electromagnetic wave and what type of wave is it?

A

light, microwave, radio wave, are examples of electromagnetic waves, electromagnetic waves are transverse waves

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6
Q

what is a transverse wave?

A

transverse waves are waves that dont need a medium to move or travel

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7
Q

what is frequency?

A

frequency is the amount of waves passing a point in 1 second and is measured in hertz.

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8
Q

what wave frequency determines sound and light?

A

for sound it is the pitch (how high or low thw sound is) and for light it is the colour.

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9
Q

what is a period?

A

period is the amount of time that it takes for a wave to pass a given point

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10
Q

what is a wavelength?

A

wavelength is the distance of a point on a wave to another point on another wave in the same position, measured in meters

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11
Q

what is amplitude?

A

amplitude is the total distance of a wave from its rest position or rest point, and also measured in meters

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12
Q

what is velocity?

A

velocity is the speed of the wave in the direction at which its travelling

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13
Q

when waves passes through a medium and it changes it speed as well as the direction, what is it called?

A

its called refraction

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14
Q

what is an interface?

A

the surface or boundary of the two medium

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15
Q

what is the line at right angels to the interface called?

A

normal line

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16
Q

we see things when________

A

light reflects or bounces off an object and and enters our eyes.

17
Q

waves can travel through different media at______

A

speeds

18
Q

if speed changes what will happen to the direction?

A

the direction also changes, and it bends towards the normal when its slowed down and bends away from the normal when its fast

19
Q

what is reflection?

A

reflection is when the light bounces off an object

20
Q

what is refraction?

A

refraction is when the light passes through a medium and its speed and direction changes

21
Q

what is transmitted?

A

when light is not reflected nor absorbed

22
Q

what is absorption?

A

is when the energy that the wave is carrying is transferred into the particles of the medium.

physics (5 decks)

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