Planning:
How do you know it is a Earthquake? The Ground Shakes
Why does the ground shake? Because of the Seismic Waves
Where does the seismic waves come from? Rocks/Plates breaking
Why does the rock/plates Break? From the pressure they have built up
Why is there so much pressure? Because the rocks push against each
Why do the rocks push against each other? Because the plates expanded
Why do the plates expand? Because of the heat inside earth
How? Plan:
Earthquakes are most likely caused when two underground tectonic plates break apart and begin moving against each other. That causes seismic waves which makes the ground shake. When two tectonic plates are rubbing together they don’t just move smoothly, but catch on each other. The plates still push against each other, but without movement. Soon after, the plates break because of all the force they built up, this is the when the earthquake occurs.
While the earthquake is still going and afterwards, the plates continue to move until they catch on each other again. Underground where the plates break is called the focus of the earthquake, the place above the ground is called the epicenter.
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