Plate Tectonics and Earth's Interior

Question 1

What is the outer most layer called?

Answer 1

Crust

Question 2

What kind of waves are conducted through the Earth?

Answer 2

Seismic waves

Question 3

Which kind of waves cannot travel through outer core (liquid)

Answer 3

Seismic waves

Question 4

What happens to P waves as they travel through the outer core (liquid)

Answer 4

Deflects the waves

Question 5

What state is mantle

Answer 5

Solid

Question 6

What state is the outer core

Answer 6

Liquid

Question 7

What state is the inner core

Answer 7

Solid

Question 8

What are two elements that compose the majority of the crust

Answer 8

Silicon and oxygen

Question 9

What four elements composes the majority of the earth

Answer 9

Silicon, oxygen, magnesium and iron

Question 10

Why are the more dense elements closer to the middle of the earth

Answer 10

Density

Question 11

How thick is the oceanic crust

Answer 11

5-7 Km

Question 12

How thick is the continental crust?

Answer 12

10-70 Km

Question 13

The outermost layer of the mechanical layer

Answer 13

Lithosphere

Question 14

The mechanical layer that is solid but can flow

Answer 14

Aesthenosphere

Question 15

What are the three types of plate boundaries

Answer 15

Transform, divergent, convergent

Question 16

Where are divergent boundaries often found

Answer 16

They mostly exist on the sea floor but can exist on land

Question 17

What elements are rich in the continental crust?

Answer 17

Silicon and oxygen

Question 18

What elements are rich in the oceanic crust

Answer 18

Iron and magnesium

Question 19

What causes the plates to move

Answer 19

Convection currents

Question 20

What are the believed reasons that plates can move

Answer 20

The aesthenosphere is weak, so the lithosphere can slip over it and oceanic plates are dense so they dive under continental plates