Chapter 1 The Earth

Question 0

Mantle

Answer 0

Semi molten hot rock underneath the earths crust

Question 1

Crust

Answer 1

The crust is the earths outer skin and consistes of solid rock

Question 2

Core

Answer 2

The centre of the earth and can reach temperatures of over 5000C

Question 3

Magma

Answer 3

Semi molten material that makes up the earths mantle

Question 4

Plate tectonics

Answer 4

Plate tectonics are the theory that the earth is divided into many consistently moving plates

Question 5

Plate boundaries

Answer 5

Plate boundaries are the areas on the earths crust where plates meet

Question 6

Destructive boundaries

Answer 6

Destructive boundaries are when two plates crash together and when they crash together the heavier plate sinks

Question 7

Constructive boundaries

Answer 7

Are when two plates separate and magma rises to the surface and a volcano is created

Question 8

Convection currents

Answer 8

Convection currents in the mantle cause the plates of the crust to move

Question 9

Pangaea

Answer 9

Pangaea is one super continent was formed over 200 million years ago

Question 10

Continental drift

Answer 10

Continental drift was when Pangaea pull apart and the continents form as they are today

Question 11

Mid-ocean ridge

Answer 11

The mid-ocean ridge is an underwater mountain range

Question 12

Crater

Answer 12

The crater is the top of a volcano

Question 13

Vent

Answer 13

The vent is the hole in the earth where the magma flows through

Question 14

Magma reservoir

Answer 14

The magma reservoir is a place in the mantle where magma is stored

Question 15

Active

Answer 15

Active means a volcano is still erupting at regular intervals

Question 16

Dormant

Answer 16

The volcano has been quiet for hundreds of years but could erupt again

Question 17

Extinct

Answer 17

The volcano has not erupted in recorded times(thousands of years)

Question 18

Earthquake

Answer 18

An earthquake is a sudden movement or trembling of the earths crust

Question 19

Fault line

Answer 19

The plates move on the fault line

Question 20

Tremor

Answer 20

The tremors spread out from the focus

Question 21

Focus

Answer 21

The focus is the point deep in the earths crust where the earthquake begins

Question 22

Epicentre

Answer 22

The epicentre is the point on the surface directly above the focus

Question 23

Aftershock

Answer 23

Smaller tremors called aftershocks may occur hours or days after the main earthquake