What are the 2 different types of crust?
Earth’s crust is divided into two types: oceanic crust and continental crust. The transition zone between these two types of crust is sometimes called the Conrad discontinuity. Silicates (mostly compounds made of silicon and oxygen) are the most abundant rocks and minerals in both oceanic and continental crust.
What is a crack in Earth’s crust called?
Faults are cracks in the earth’s crust along which there is movement. These can be massive (the boundaries between the tectonic plates themselves) or very small.
What causes the earth to split?
About 180 million years ago the supercontinent Pangea began to break up. Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle.
Can you fall in an earthquake crack?
Actually local small cracks might open during an earthquake. So when imagining an opening crack during an earthquake, it would be wrong to think of a crack that penetrates very deep. It is a tiny opening and if you fall in, it is very likely that you will be squished into it due to hydrostatic pressure.
What would happen if Earth split in 2?
As the Earth is methodically sliced in half, its mantle and core would be exposed to the vacuum of space, causing massive earthquakes that would be felt everywhere on the planet. Those who are the furthest from the split would have the best chance of surviving the longest, at least from the initial earthquakes.
What will happen when the San Andreas Fault cracks?
According to The ShakeOut Scenario, a 7.8 earthquake hitting along the southern San Andreas fault on a non-windy day at about 9:00 a.m. will unfold, approximately, like this: 1,800 people will die. 1,600 fires will ignite and most of those will be large fires.
Does San Diego get earthquakes?
But like all of California, San Diego is earthquake country. Most people in San Diego County live less than 15 miles from a fault that can have a damaging earthquake, such as the Rose Canyon fault along the coast and beneath downtown San Diego, and the Elsinore and San Jacinto faults that cut through East County.
Why is California having so many earthquakes?
The San Andreas fault marks the boundary where the North American tectonic plate and the Pacific plate grind past each other. As the Pacific plate inches along a northwesterly route, stresses build until the ground breaks, which sends the surface rolling in an earthquake.
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