Vocabulary

Question 1

Middle, fluid-like layer of Earth, 3000 km thick

Answer 1

Mantle

Question 2

Extensive elongated depression of the sea floor at a subduction zone

Answer 2

Trench

Question 3

Seismic wave that can travel through all the Earth’s layers

Answer 3

P - waves (Primary waves)

Question 4

Action that results when the oceanic portion of a plate descends into the mantle

Answer 4

Subduction

Question 5

Chain of volcanic islands that form on the oceanic portion of an overriding plate

Answer 5

Volcanic island arc

Question 6

Region where tectonic plates are moving together

Answer 6

Subduction zone

Question 7

Fluid like layer of mantle over which the lithosphere drifts

Answer 7

Asthenosphere

Question 8

Boundary at which two tectonic plates are moving together

Answer 8

Convergent Boundary

Question 9

Theory that explains the movement of continents over Earth since it formed

Answer 9

Continental Drift Theory

Question 10

Small region of very hot mantle

Answer 10

Hot Spot/ Mantle Plume

Question 11

The solid centre of the Earth

Answer 11

Inner Core

Question 12

Rigid outer layer of Earth’s internal structure

Answer 12

Crust

Question 13

Convection currents that occur in the mantle

Answer 13

Mantle Convection (I don’t think we learnt this)

Question 14

An undersea mountain range that occurs at a divergent plate boundary

Answer 14

Ridge

Question 15

Process by which new sea floor is created at a divergent plate boundary

Answer 15

Sea floor spreading

Question 16

One of 12 large and 20 smaller sections of Earth’s lithosphere

Answer 16

Tectonic Plates

Question 17

String of volcano created on an overriding continental plate parallel to boundary

Answer 17

Volcanic Arc

Question 18

Theory that Earth is divided into large plates that move over the asthenosphere

Answer 18

Plate Tectonic Theory

Question 19

Region of Earth’s internal structure formed by crust and upper layer of mantle

Answer 19

Lithosphere

Question 20

Plate boundary where plates move past each other in opposite directions

Answer 20

Transform Boundary

Question 21

Waves produced by earthquakes

Answer 21

L - waves (Surface waves)

Question 22

Name of the single land mass that existed 270 million years ago

Answer 22

Pangaea

Question 23

Push originating from production of a mid-ocean ridge

Answer 23

Ridge push

Question 24

Crack in the lithosphere where magma reaches Earth’s surface

Answer 24

Volcano

Question 25

Seismic waves that only pass through solid rock

Answer 25

Secondary Waves / Shear waves/ S-waves