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earthquakes
Term | Definition |
---|---|
epicentre | is the point where the tremors first reach the surface and the effects of the earthquake are usually at their strongest |
focus | is the centre of the earthquake where the shockwaves are sent from |
seismograph | is the instrument used to measure and record the seismic waves |
richter scale | is the measure of the magnitude / strength of the earthquake |
tsunami | is an earthquake that has their epicentre under oceans which generate large waves |
subduction zone | is when the heavier plate is forced to sink underneath the other plate |
transform boundary | is when two plates grind or slide past each other causing massive stress or tension and friction causing vibrations |
divergent boundary | is when two plates seperate and move away from each other |
convergent boundary | is when two plates collide and come together |