Topic 2: Lesson 1: Earth's Interior

Question 1

direct evidence (geologist use to study interior)

Answer 1

rock samples

Question 2

indirect evidence (geologists use to study interior)

Answer 2

seismic waves

Question 3

seismic waves

Answer 3

waves produced by earthquakes

Question 4

rock that forms Earth’s outer layer

Answer 4

crust

Question 5

part of the crust that forms continents

Answer 5

continental crust

Question 6

makes up continental crust

Answer 6

granite

Question 7

part of the crust that lies beneath the ocean

Answer 7

oceanic crust

Question 8

makes up oceanic crust

Answer 8

basalt

Question 9

layer of hot rock below the crust

Answer 9

mantle

Question 10

rigid layer made up of the uppermost part of the mantle and the crust.

Answer 10

lithosphere

Question 11

softer part of the mantle below the lithoshpere

Answer 11

asthenosphere

Question 12

a layer of molten metal that surrounds the inner core

Answer 12

outer core

Question 13

dense ball of solid metal

Answer 13

inner core

Question 14

the transfer of thermal energy by the circulation or movement of a liquid or gas

Answer 14

convection

Question 15

cool, dense rock from oceanic crust sinks into the mantle; near the core the rock heats up, becomes less dense, and rises

Answer 15

convection currents in mantle

Question 16

carry hot, solid rock of mantle outward, and cooled, solid rock inward in a never-ending cycle

Answer 16

convection currents in Earth

Question 17

causes magnetic field

Answer 17

convection currents in outer core