Waves Flashcards

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1
Q

Wave def

A

A wave transfers energy without transferring matter

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2
Q

Frequency def

A

How many waves there are per second

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3
Q

What units are frequency measured in

A

Hz

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4
Q

Transverse - direction

A

Oscillations are perpendicular to the wave direction

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5
Q

Longitudes - direction

A

Oscillations are parallel to the wave direction

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6
Q

Eg transverse

A

Visible light

Em

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7
Q

Eg longitudal

A

Sound

Seismic

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8
Q

Increased density =

A

Decrease in speed

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9
Q

Decreased density =

A

Increase in speed

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10
Q

Refraction happens when…

A

The wave changes from one medium to another

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11
Q

3 changes in refraction

A

Density
Speed
Direction

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12
Q

Speed of light

A

300 000 000m/s

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13
Q

Speed of sound

A

343 m/s

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14
Q

What types of waves are water waves

A

Seismic waves - transverse

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15
Q

Amplitude def

A

From the middle to the top / bottom of wave

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16
Q

Wavelength def

A

Crest - crest

17
Q

V=

A

Wave speed

M/s

18
Q

F=

A

Frequency

He

19
Q

Lander

A

Wavelength = metres,m

20
Q

Air - glasss

A

Decrease in speed

Bends towards the normal

21
Q

Glass - air

A

Increase in speed

Bends always from the normal

22
Q

What wave goes through the ionosphere

A

Microwaves