EOY - GEO - Y8 🪨

Question 1

Name 3 sources of evidence of climate change.

Answer 1

Tree rings, Ice cores, Historical sources.

Question 2

How do tree rings work?

Answer 2

Each ring shows a year of growth, the size of them show conditions during the year.

Question 3

How do ice cores work?

Answer 3

Scientists analyse the bubbles in each layer of the ice showing them the temperatures of each year.

Question 4

How do historical sources work?

Answer 4

Things like old photos, drawings and diaries can show us some evidence of climate change but it is not too accurate.

Question 5

What are 4 peices of evidence that our climate is changing?

Answer 5

Vanishing islands, Planet warming up, Death of species, Extreme weather.

Question 6

What is the natural greenhouse effect?

Answer 6

1. Energy from the sun warms the earth.
2. Some escapes back into space.
3. Some is held by greenhouse gasses in the atmosphere.

Question 7

What is the enhanced greenhouse effect?

Answer 7

The enhanced greenhouse effect is when extra greenhouse gases in the atmosphere trap too much of the Sun’s energy.

Question 8

How are humans changing the carbon cycle?

Answer 8

Doing various things like burning fossil fules, mining, food and mineral production and deforistation.

Question 9

Which countries are most to blame for Climate Change?

Answer 9

1) China
2)USA
3)India
4)Russia

Question 10

Name some indutries most respinsible for climate change:

Answer 10

1)Fossil fuels
2)Transportation
3)Agriculture
4)Manufacturing/Construction

Question 11

How will the Maldives be affected by climate change?

Answer 11

Scientist predict that in 50-100 years the Maldives will be completely submerged because of rising sea levels. This will cause: a loss of tourism, disrupt the fishing industry, loss of beachesand less fresh water available.

Question 12

Why is London an unsustainable city?

Answer 12

London’s ecological footprint is 125 times it’s geographical area! This is the impact a person/community/area has on the environment.

Question 13

What is BedZed?

Answer 13

Bedzed is the biggest eco community in the UK, it promotes everything ecological and energy conservation.

Question 14

Give 3 examples of renewable energy:

Answer 14

Hydroeletric power (HEP), Solar energy and Wind energy.

Question 15

How much was the Swansea Bay tidal lagoon project expected to cost?

Answer 15

£1.3 billion GBP.

Question 16

What is a cold environment?

Answer 16

An area that is always covered by ice: it may have glaciers, ice sheets and frozen rock or soil.

Question 17

Where are cold environments found around the world?

Answer 17

Cold environments are usually found in high latutudes and altitudes. There is a cold environment in every continent.

Question 18

What is the zone of accumilation?

Answer 18

Where there are inputs into the glacial budget.

Question 19

What is the zone of ablation?

Answer 19

When there are outputs from the glacial budget.

Question 20

What might happen in the zone of ablation?

Answer 20

Melting due to rising temperatures.

Question 21

What is the glacial budget?

Answer 21

A system where there is inputs, processes and outputs.

Question 22

What is plucking?

Answer 22

When meltwater freezes into a rock and as the glacier moves downhill, rock is taken from the back wall.

Question 23

What is abrasion?

Answer 23

Abrasion is when rocks have frozen to the base and the back of the glacier scrapes bedrock.

Question 24

What is freeze-thaw?

Answer 24

Freeze thaw is the process when water seeps into cracks, expands and eventually breakes the rock apart.

Question 25

Describe a shape of a corrie?

Answer 25

An armchair shape with a steep back wall and a tarn.

Question 26

Explain how a corrie is formed:

Answer 26

A corrie is formed by snow and ice building up and then condencing and creating a glacier. This deepens and creates a hollow. As it builds up it erodes more and more.

Question 27

How is a U-shaped valley formed?

Answer 27

As a glacier moves through a valley it erodes it’s surroundings. This creates steep sides and a wide valley floor.

Question 28

How do u-shaped valleys compare to v-shaped valleys?

Answer 28

V-shaped valleys are formed by rocks and sedement in rivers eroding a valley whereas a u-shaped valley is formed by a glacier moving through an already-existing valley.

Question 29

Why is ice melting and why will it affect us?

Answer 29

As humans, we are always releasing harmful gasses that contribute to rising temperature levels. This will cause sea levels to rise up to 60 meters.

Question 30

What is the evidence that the global climate is changing?