Tectonic plates build up stress between each other and suddenly release decades or even centuries of stress, causing earthquakes. Volcanoes that have lots of pressure built up can also cause earthquakes.
Earth's tectonic plates move and seismic waves begin to occur.
Earth's tectonic plates move and seismic waves begin to occur.
Very small seismic activity causes small waves to occur. The bigger the waves get the larger the seismic activity is.
it is the tilt of the earth in the suns direction
The gravity of the moon and sun causes the earth's tides. The greatest tides are called 'spring' tides which occur when the earth, moon and sun are aligned. The moon has the greatest effect on our tides because of its proximity.
Seismic waves occur when there is an earthquake.
seismic plates, or tectonic plates, are huge 'plates' of rocks that exist beneath the earth's surface that rest upon molten rock. It is on the borders of these plates that 'fault lines' occur and these are hotspots of volcanic and seismic activity such as earthquakes.
This happens in the earth's core.
Seismic Waves - are mechanical vibrations that occur inside the Earth caused by the breaking of rocks.
One way is from seismic waves, which are formed when earthquakes occur.
The gravity of the moon.
The shift of the Earth's crust causes the ground to shake or 'quake'