sudden earth events Flashcards
1
Q
What are some sudden earth events that can change the surface of the earth rapidly?
A
Earthquake, volcanic eruption, tsunami, landslide, tornado, hurricane, etc.
2
Q
What causes an earthquake?
A
When plates in the earthś crust move past each other, sometimes they get caught and energy builds up. Pressure builds. When the plates finally break, they slide and release the pressure and energy in the form of waves.
3
Q
What is the focus
A
(the place in the crust where the plates are caught and pressure is building) and the epicenter (the place directly above the focus on the surface of the earth, where the earthquake takes place)of an earthquake?
4
Q
How is an earthquake measured
A
Richter Scale
