1. Lesson 5

2. What will happen to average temperature and rainfall in the South East?

3. Aim: To recognise and understand the greenhouse effect
Specification Statement- What challenges might our future climate present us with?
2.2a The Earths climate appears to be changing as a result of human activity, and future climates are uncertain
Aim: To recognise and understand the greenhouse effect

4. Key Terms Greenhouse effect Greenhouse gas

5. The greenhouse effect 1491 class clip
The greenhouse effect is the natural process whereby gases in the atmosphere, principally carbon dioxide, trap some outgoing solar radiation.
This process warms the planet.

6. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33°C (59°F) colder than at present
Human life would therefore not be possible

7. Draw a labelled diagram to show the greenhouse effect.

8. Copy and complete this table
Greenhouse gas
% produced
Man made sources
% increase
Carbon dioxide
Methane
Nitrous Oxide
Halocarbons

9. Name as many Greenhouse gases as you can:
In order, Earth's most abundant greenhouse gases are:
water vapour
carbon dioxide
methane
nitrous oxide
ozone
CFCs
When these gases are ranked by their contribution to the greenhouse effect, the most important are:
water vapour, which contributes 36–72%
carbon dioxide, which contributes 9–26%
methane, which contributes 4–9%
ozone, which contributes 3–7%
How much does each contribute?

10. What is the message?

11. Movie climatehttp://blip.tv/file/get/Adtastic2001-ClimateChaos819.wmv

13. Summary GREENHOUSE GASES
Summarise the information about greenhouse gases into a mind map, START OFF LIKE THIS-
Summary
Escapes from
landfill
CARBON
DIOXIDE
METHANE
OZONE
GREENHOUSE
GASES
Released
by swamps
CFCs
NITRIOUS
OXIDE
HALOCARBONS
WATER
VAPOUR
HFCs

14. Exam Question
Describe how human activities produce two different types of greenhouse gases. 4 marks

15. 0-1 name carbon dioxide but does not link its production with an activity such as deforestation or car driving
2 marks also named a second gas such as methane however still does not say how human activities produce the gas
3-4 not only describes a second gas but links the gas with where it has come from.

16. You should know………
Colour RED if you don`t know this, ORANGE if you partially understand and GREEN if you completely understand the statement.
How climate has changed in the past.
The timescale of climate change.
How scientists know about past climatic changes.
How climate change affected people and the environmental change during The Little Ice age.
How large, long term climate change contributed to extinction at the end of the ice age.
How the greenhouse effect works.