Layers
This layer is liquid
outer core
Long high sea wave caused by an earthquake or volcanic eruption under the sea
Tsunami
Earth's crust is made of large plates of WHAT that move very slowly & continuously
Rock
Scientists rate & compare earthquakes using this
Richter Scale
Melted rock inside the Earth is called what?
Magma
This layer is the hottest
inner core
A fracture or break in Earth's crust
fault
There are approximately how many plates that make up the crust?
20
The Richter Scale ranks earthquakes on their magnitude with a number ranging 0 to what?
10
Oceanic crust is made up of mostly this kind of rock
Basalt
This is a solid layer of rock covering planet Earth
crust
A hanging wall that moves downwards
Normal Fault
When the plates break, the stress from the force is released and we feel it as what?
An Earthquake
The most destructive earthquake happened in 1906. Where was it, and what was it's magnitude?
San Francisco, California
7.8
Continental crust is made up mostly of this kind of rock
Granite
This layer is very thick, made of rock and magma, and is always slowly moving
mantle
A hanging wall that moves UPWARDS
An earthquake can be felt as these three things
Shaking
Rolling
Sudden shock
The largest earthquake in the US happened in 1964. Where was it, and what was its magnitude?
Prince William Sound, Alaska
9.2
The inner core is solid because of this
Pressure
The outer core is made up of these 4 elements
Iron
Nickel
Sulphur
Oxygen
A foot wall that moves upwards
Strike Slip Fault
Plates move about how much per year
About 2 centimeters
This is the most famous fault in the world, and is 800 miles long
The San Andres Fault
The magnetic field protects Earth from these
Solar winds