Earth's Climate

Question 1

What does mitigation mean?

Answer 1

to reduce

Question 2

What is Pangea?

Answer 2

A super continent

Question 2

What is Pangea?

Answer 2

A super continent

Question 3

What is a warm period called?

Answer 3

Inter glacials

Question 4

What is a cold period called?

Answer 4

Glacials

Question 5

Give any evidence we have to know that the climate is changing.

Answer 5

Tree rings- the wider the tree ring, the wetter or hotter the weather/ climate.

Ice cores- we know the climate from years ago by taking a piece of ice which has trapped air bubbles from years ago containing different gases like: methane, oxygen, carbon dioxide..

Historical Evidence- glaciers, artefacts, paintings, diaries, photos…

Question 6

What will having more sunspots mean?

Answer 6

the global temperature will rise

Question 7

how many years are there between sunspot cycles?

Answer 7

11

Question 8

How does a volcanic even affect global temperature?

Answer 8

it lowers it

Question 9

how many cycles did Milankovitch disover?

Answer 9

3

Question 10

How long does it take the Earth to go from a circular orbit to an elliptical orbit?

Answer 10

100,000 years

Question 11

What causes Climate change?

Answer 11

• changes in the way the earth moves around the sun
• changes in the sun’s temperature
• volcanic activity
• asteroids

Question 12

what is a volcanic winter?

Answer 12

the cooling of the lower atmosphere and reduction of surface temperatures

Question 13

How can asteroids cause climate change?

Answer 13

if an asteroid hits earth it will eject large volumes of dust into the atmosphere, blocking solar radiation.

Question 14

What do sunspots entail?

Answer 14

it means that the sun is more active than before

Question 15

How long does it take for the earths axis to tilt, straighten up, and tilt back again?

Answer 15

41,000

Question 16

How long does it take for the earths axis to wobble, straighten up, and wobble again?

Answer 16

26,000 years

Question 17

How can volcanoes cause climate change?

Answer 17

volcanic ash can block out the sun, reducing temperatures on the earth. This is a short term impact.

Question 18

What is the greenhouse effect?

Answer 18

it is the way that the gases in the atmosphere trap heat from the sun.

Question 19

Name some greenhouse gases

Answer 19

Nitrogen
oxygen
carbon dioxide
water vapour

Question 20

Why is carbon dioxide the most important greenhouse gas?

Answer 20

It helps to regulate the temperature in our Earth

Question 21

True or False? Greenhouse effect is a natural process

Answer 21

True

Question 22

Why is the greenhouse effect important?

Answer 22

Without it there would be no life on earth

Question 23

What is the enhanced greenhouse effect and is it bad or good?

Answer 23

It is caused by humans and is not good.

Question 24

How is enhanced greenhouse effect caused?

Answer 24

land change transport: cars, plains, trains Energy supply Industry

Question 25

How do we know that humans are the cause of enhanced greenhouse effect?

Answer 25

The temperature has changed rapidly. Temperatures have been warming up at the same time as CO2 emissions have been increasing.

Question 26

How is arctic ice being affected by the enhanced greenhouse effect?

Answer 26

We are loosing huge amounts of sea ice each year as the temperature is rising. Sea ice is melting faster than land ice.

Question 27

How is the sea level being affected by the enhanced greenhouse effect?

Answer 27

The sea level has been increasing. It has risen by about 20cm since 1900. The sea gets warmer because of thermal expansion- as water gets warmer it expands.

Question 28

Does sea ice increase sea level?

Answer 28

No, land ice will increase the sea level, as will thermal expansion.

Question 29

What are the problems when predicting the future?

Answer 29

What the world's population will be whether fossil fuels will continue to be used, or whether there will be a shift to cleaner energies like wind or solar If people will change their lifestyles and recycle more, or use public transport.

Question 29

What are the problems when predicting the future?

Answer 29

What the world's population will be. whether fossil fuels will continue to be used, or whether there will be a shift to cleaner energies like wind or solar. If people will change their lifestyles and recycle more, or use public transport.

Question 30

How much would the loos of Greenland's ice sheet raise the sea level by?

Answer 30

7 metres

Question 31

How much would the Antarctic ice sheets add to the sea level if they melted?

Answer 31

13 metres

Question 32

Why would sea level rises be higher in some places than others?

Answer 32

It is because of prevailing winds and currents and also where the land is also sinking.

Question 33

What does IPCC mean and what do they do?

Answer 33

Intergovernmental, panel on, climate, change | they are a group of scientists who are independent.