Layers of the Earth and Plate Tectonics Review

Question 1

The outer core is made of

Accepted Answer

molten metal

Question 2

`The thickest layer of the earth is the

Accepted Answer

mantle

Question 3

When the hot magma rises up and the cold magma sinks down. This causes the plates to move.

Accepted Answer

convection

Question 4

Long narrow mountains under the ocean formed by seafloor spreading

Accepted Answer

oceanic ridge

Question 5

The major layers of the earth are the inner core, outer core, crust and

Accepted Answer

mantle

Question 6

The crust and the top layer of the mantle is the

Accepted Answer

lithosphere

Question 7

The hottest layer of the earth is the

Accepted Answer

inner core

Question 8

The layer of the Earth that causes magnetism is the

Accepted Answer

outer core

Question 9

The bottom of the lithosphere and the asthenosphere are part of the

Accepted Answer

mantle

Question 10

The process where the plates move away from each other

Accepted Answer

sea floor spreading

Question 11

The coolest layer of the earth is the

Accepted Answer

crust

Question 12

The Earth's plates move on the semi-solid layer called the

Accepted Answer

asthenosphere

Question 13

Convection currents happen because

Accepted Answer

hot material rises up

Question 14

A hot dense ball of solid metal is the

Accepted Answer

inner core

Question 15

An element necessary for life that is found the Earth's crust is

Accepted Answer

oxygen

Question 16

Plate tectonics takes place in the

Accepted Answer

lithosphere

Question 17

Convection currents move the crust in the

Accepted Answer

mantle

Questions 17