# Physics P1 Keywords

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Geohazard
A natural hazard. e.g. floods and hurricanes
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Seismograph
An instrument located on Earth that detects earthquake waves
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Refraction
The change in direction and speed of a wave as it passes from one medium to another
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Longitudinal waves
AKA P waves. Vibrate back and forth about its normal position
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Transverse waves
AKA S waves. Vibrates up and down about its normal position
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Formula for wave speed
Wave speed(m/s) = Frequency (Hz) x Wavelength(m)
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Formula for distance a wave travels
Distance(m) = Wave speed(m/s) x Time(s)
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## Other cards in this set

### Card 2

#### Front

An instrument located on Earth that detects earthquake waves

Seismograph

### Card 3

#### Front

The change in direction and speed of a wave as it passes from one medium to another

### Card 4

#### Front

AKA P waves. Vibrate back and forth about its normal position

### Card 5

#### Front

AKA S waves. Vibrates up and down about its normal position