Instrument used to measure earthquake is known as ?
- seismograph
- quake meter
- barometer
- none of the above
Instrument used to measure earthquake is known as ?
Earthquakes occur most frequently at ?
P Waves can pass through ____ ?
P Waves are also said to be ____ waves.
Vibrations radiate from focus in all direction as –
S Waves can pass through ____.
Earthquakes usually occur at boundary of –
P waves are:
Body waves consist of the:
Earthquakes occur when there is a sudden release of stored up energy in Earth’s –
Basic lava erupts out of volcano, throwing out mainly –
Magma which is forced onto Earth’s surface is known as –