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Flashcards in Structure Of The Earth Deck (33)
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1
Q

Th earths crust is broken into enormous sections called

A

Tectonic plates

2
Q

Convection currents

A

the plates floating on the mantle are made to move by convection currents

3
Q

What are lines of latitude and longitude

A

Imaginary lines that go around the earth.

4
Q

What do lines of latitude do

A

Show how far north or south a place is

5
Q

Where are lines of latitude measured from

A

The equator

6
Q

What do lines of longitude do

A

Show how Far East or west a place is

7
Q

Where are lines of longitude measured from

A

Greenwich meridian line

8
Q

What happens at a conservative plate boundary

A

Plates slide against each other. When these plates get stuck, friction builds up until they can’t take any more stress and they jump free, causing an earthquake.

9
Q

The earths structure is like

A

a cracked boiled egg

10
Q

Collision plate boundary

A

The crust crashes together and starts to be forced upwards creating fold mountains

11
Q

Constructive plate boundary

A

Plates move away from each other. Known as diverging plates. As the plates move away magma can five its way to the surface to fill the gap, creating new land

12
Q

Destructive plate boundary

A

One type of crust is continental and one is Oceanic. When they meet the oceanic crust gets pulled down as it is heavy. The friction caused when it sinkscreats huge earthquakes and the crust re melts and gets forced upwards to form a volcano

13
Q

What is a volcano

A

An opening or rupture in a planets surface or crust which allows :hot magma, volcanic ash and gases to escape from below the surface

14
Q

List 3 benefits of living near a volcano

A

The volcanic rocks provide building materials and valuable minerals

85% of homes in Iceland are heated by geothermal energy (boiling underground water)

Greenhouses producing :tomatoes, cucumbers and flowers are heated using geothermal energy

15
Q

What causes an earthquake

A

A sudden movement between the plates

16
Q

What is an earthquake

A

When the ground skates suddenly because a piece of the earths crust has moved

17
Q

Where do the waves of an earthquake spread out from

A

The focus

18
Q

What is the focus

A

The point where the earthquake starts

19
Q

What is the epicentre

A

The point on the earths surface immediately above the focus

20
Q

List 2 short term earthquake impacts

A

The built landscape may be destroyed

People may be killed or injured

21
Q

List 2 long term impacts

A

Billions of dollars worth of damage may be caused

A large number of people may end up being unemployed

22
Q

Collision plate boundary

A

The crust crashes together and starts to be forced upwards creating fold mountains

23
Q

Constructive plate boundary

A

Plates move away from each other. Known as diverging plates. As the plates move away magma can five its way to the surface to fill the gap, creating new land

24
Q

Destructive plate boundary

A

One type of crust is continental and one is Oceanic. When they meet the oceanic crust gets pulled down as it is heavy. The friction caused when it sinkscreats huge earthquakes and the crust re melts and gets forced upwards to form a volcano

25
Q

What is a volcano

A

An opening or rupture in a planets surface or crust which allows :hot magma, volcanic ash and gases to escape from below the surface

26
Q

List 3 benefits of living near a volcano

A

The volcanic rocks provide building materials and valuable minerals

85% of homes in Iceland are heated by geothermal energy (boiling underground water)

Greenhouses producing :tomatoes, cucumbers and flowers are heated using geothermal energy

27
Q

What causes an earthquake

A

A sudden movement between the plates

28
Q

What is an earthquake

A

When the ground skates suddenly because a piece of the earths crust has moved

29
Q

Where do the waves of an earthquake spread out from

A

The focus

30
Q

What is the focus

A

The point where the earthquake starts

31
Q

What is the epicentre

A

The point on the earths surface immediately above the focus

32
Q

List 2 short term earthquake impacts

A

The built landscape may be destroyed

People may be killed or injured

33
Q

List 2 long term impacts

A

Billions of dollars worth of damage may be caused

A large number of people may end up being unemployed