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Module 6 Test
Test for Module 6
Question | Answer |
---|---|
Sedimentary Rock | Rock formed when chemical reactions cement sediments together, hardening them |
Plastic Rock | Rock that behaves like something between a liquid and solid |
Fault | Boundary between two sections of rock that can move relative to one another |
Epicenter | Point on the surface of earth directly above an earthquake's focus |
Pangea | hypothetical super continent that may have existed in earth's past |
What are the parts of earth? | Atmosphere, hydrosphere, crust, mantle, core (inner and outer) |
What is the Moho between? | Crust and mantle |
What is between the Gutenberg discontinuity? | mantle and outer core |
How do scientists observe the interior of the earth? | Seismic waves |
What is the benefit of earth's magnetic field? | It protects us from cosmic rays from the sun |
What causes earth's magnetic fields? | Large amount of electrical flow to core |
What are 2 theories that explain magnetic field? | Dynamo theory and Rapid decay theory |
How come the inner core is solid and the outer core isn't? | The inner core has all the pressure of the earth on it which condenses it to a solid. |
What causes deep trenches in the ocean? | plates shifting |