C11 The Earth's Atmosphere

Question 1

Phase 1 of the start of the atmposhpere?

Answer 1

Volcanoes errupt puting gasses into the atmosphere

Mostly co2 and no Oxygen
Small amout od oxygen, nitrogen and ammonia

Question 2

What is phases two of the composition of the atmosphere?

Answer 2

Water vapour condenses to form oceans

Co2 is absorbed by the oceans

Green plants and algea disolve into the ocean - which start to produce oxygen from photosynis

Question 3

What is phase 3 of the composition of the atmosphere?

Answer 3

As algea photosynisised pxygen increases and co2 decreased

As oxygen built up more complex life started to form

Question 4

When was the atomosphere alike now?

Answer 4

200 million years ago

Question 5

When did algea first evolve?

Answer 5

About 2.7 billion years ago

Question 6

What is the greenhouse effect?

Answer 6

Short waves come through the atmospher
Long waves bounce back from the ground
Long waves are reflected back by the atmoshpere
The atomspher warms up

Question 7

How does human actions increase global warming?

Answer 7

Deforestation
Burning fossile fuels
Agriculture
Creating waste

Question 8

Why is evidence about global warming reliable?

Answer 8

It has been peer assesed

Question 9

Why can’t we fully understand climate change?

Answer 9

There are too many varibales that are changing

Question 10

Why is climate change dangerous?

Answer 10

Melting poler ice leads to rising sea levels

Changes climate patters
More extreame weather

May lead to a loss of biodiversity as habitats are destroyed

Question 11

What is a carbon footrint?

Answer 11

A measure of how much co2 id released over the full life cycle of something

Question 12

Why is measuring carbon footprints hard?

Answer 12

There are too many factors to measure

Eg how your actions have effected other people to do things ect

Question 13

How could you reduce your carbon footprint?

Answer 13

Using more renewable/ efficent energy/products - this would conserve energy and reduce waste

Governemt laws can reduce emmisions eg ULEZ

Question 14

Why is it hard to reduce your carbin footprint?

Answer 14

It may be more expensive
You may nit be bothered
Governemnts may be conserned by limiting economic growth with new laws
Of pther countries arn’t doing it then the UK may not want to fall behind

People get a customed to lavish lifestyles