Geography

Question 0

Mantle

Answer 0

Contains Hot molten rocks/magma 4000 degrees

Question 1

Crust

Answer 1

Outer layer of the earth broken into a number of different plates sits on top of the mantle

Question 2

Core

Answer 2

Divided into 2 different parts inner and outer core it is the centre of the earth made from iron and nickel it is 5,000 degrees

Question 3

Magma

Answer 3

Soft hot molten rocks in the mantle

Question 4

Plate tectonics

Answer 4

The theory that the earths crust is broken into a number of moving plats

Question 5

Plate boundaries

Answer 5

Plates move at different speeds and in different directions which can cause volcanic activity and earthquakes

Question 6

Destructive boundaries

Answer 6

When two plates crash into one another and the heavier one sinks and crust is destroyed

Question 7

Constructive boundaries

Answer 7

When two plates seep rat and magma rises and hardens to form a volcanic island

Question 8

Pangaea

Answer 8

The continent began has one big landmass called Pangea

Question 9

Continental drift

Answer 9

When the plates start to move towards or away from other plates

Question 10

Mid ocean ridge

Answer 10

An underwater mountain range is formed when two plates separate and magma arises to fill the gaps

Question 11

Crater

Answer 11

Lava pours out If the crater at the top of the volcano

Question 12

Vent

Answer 12

Magma reaches the surface through a vent

Question 13

Magma reservoir

Answer 13

Hold the mantle and until it is full and then it over flows and the volcano erupts

Question 14

Active

Answer 14

When a volcano is still able to erupt and has not gone extinct

Question 15

Dormant

Answer 15

When a volcano has not erupted in more then 100 years

Question 16

Extinct

Answer 16

When a volcano is not able to erupt any more

Question 17

Convection currents

Answer 17

Magma rises from the core up to the crust then cools and sinks back down to the core so that the cycle can start over again

Question 18

Fault line

Answer 18

The plates move along the fault line a crack on the surface after the two plates meet

Question 19

Focus

Answer 19

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

Question 20

Tremors

Answer 20

The tremors spread out from the focus

Question 21

Epicentre

Answer 21

The point directly above the focus on the surface it is the place were tremors are the strongest

Question 22

Earthquakes

Answer 22

An earthquake is a sudden movement or trembling of the earths crust this movement takes the form of a series of shocks or tremors

Question 23

Aftershock

Answer 23

An earthquake doesn’t last longer than a minute but smaller tremors call the aftershock may occur hours or days later they often cause more damage the the earthquake its self because the earthquake made the building weaker so the after shock may destroy it