Climate Change Information

Question 1

What was the Cambrian explosion?

Answer 1

Was a point in which life was entered into the Earth 600 million years ago.

Question 2

What is the Hadean Earth?

Answer 2

This is the period of the hottest Earth.

Question 3

Palezoic period is………

Answer 3

The period in which temperatures fluctuated the most.

Question 4

What is Pollen analysis used for?

Answer 4

Shows what the Earth’s climate was like in the past.

When pollen is preserved, it can indicate a change in climate.

Question 5

What is ice-core analysis used for?

Answer 5

• It is used for measuring the climate in the past.
• The deeper the ice cores go, the older the climate is.
• Involves investigating the air within the ice of ice
  sheets.
• Explaining the content of air that period of time.

Question 6

What is dendrochronology?

Answer 6

These are the rings inside of trees that indicate the climate type.

The wider the rings, the warmer and wetter the climate was at the time.

Negative is that trees aren’t older than 4000 years old.

Question 7

How do oceanic sediments indicate past climates?

Answer 7

• This records clear evidence of cold and warm conditions –> for up to 2 million years.
• Coleoptera is a type of beetle only found in very specific conditions.
• Eustatic changes in sea levels.

Question 8

How has the Earth’s orbit caused a change in the Earth’s climate?

Answer 8

1)Milankovitch states that the Earth’s orbit is stretching
that will cause hotter summers and colder winters.

2) Have certain days with 12hours of day and night
called vernal equinox (21st March) and Autumn
equinox (21st September)

Question 9

What is the consequence of the Earth’s tilt?

Answer 9

Earth currently is tilted by 23.4°.

The further the Earth is tilted, the hotter the summers and colder the winters.

Question 10

What is the solar cycle?

Answer 10

1)The solar cycle is a natural cause for the change in
climate.

2)These are the changes to the solar output that are
constantly fluctuating.

3)Occurs every 11 years.

Question 11

How do volcanoes cause natural climate change?

Answer 11

1) Cause cooling changes to the atmosphere.

2) Release gases into the air, to prevent solar radiation
from entering the atmosphere.

3) Mount Pinatubo in 1991 colled the atmosphere by
0. 5°C.

Question 12

How is Orography a natural cause of climate change?

Answer 12

• Involves the motion of tectonic plates.
• Involves tectonics affecting where the hazards that can
  take place.
• Tectonic control occurs in Panama to stop the mixing
  of oceans.

Question 13

What is the general affect of the industrialisation era on the Earth’s climate?

Answer 13

1) Cause an increase in greenhouse emissions.
2) This leads to an increased Enhanced greenhouse
effect caused by humans.
3) Causes the destruction of carbon sinks.

Question 14

What are some sources of greenhouse gases by humans?

Answer 14

1) Power plants.
2) Residential buildings
3) Road transport
4) Forest degradation
5) Energy industry processes
6) Commercial buildings
7) Concrete, glass production.
8) Livestock
9) Iron and steel manufacturing
10) Agricultural soils
11) Chemical and petrochemical fuels
12) Oil and gas production
13) Waste and landfill sites
14) Coal mining
15) Aviation and flying

Question 15

What are the impacts of climate change on each of the sphere?

Answer 15

Hydrosphere – Global increase of rain - More surface run
off - Eustatic increase in sea levels.

Atmosphere - Increase in global temperatures - Leads to
an increase in chance of wildfires and extreme weather.

Biosphere - Different species in new areas as climate
shifts. - Causes a change in ecosystems.

Cryosphere - All glaciers are shrinking. - Thinning of
permafrost.
Athabasca glacier reduced by 1.6 km since 1870.