4.4 Climate Change

Question 1

Greenhouse effect

Answer 1

Sun light comes in atmosphere as Short Wave (High energy)

Then cannot leave again as it is released as heat (Long Wave)

Molecules block and reflect heat back to earth

Ozone layer is different (Blocks sunlight in)

Question 2

Greenhouse gases

Answer 2

All naturally produced but enhanced by humans
* Water vapour
* Co2 (most significant due to production)
* Methane (CH4) (Landfill & waste
* Nitrous Oxide (NO2 & NO3)

Question 3

Gas impact dependent on its…

Answer 3

• Ability to absorb longwave radiation
• Concentration in atmosphere

Question 4

Correlations between global tempuratures and carbon dioxide concentrations on Earth

Answer 4

Shows correlation but no causation