This 25-slide powerpoint presentation covers 'Topic 4.4 - Climate Change' in the 2016 IB Biology curriculum. Each slide includes the specific learning objective as well as key vocabulary
that students should note. The topic has been divided into two sections:
A - Greenhouse Gases
B - Global Warming
The presentation itself contains minimal information as it is intended to be used with teacher guidance. They are also formatted to be visually pleasing and to print well for handouts or
revision. Please see the preview file for an idea of the slide aesthetic and level of detail.
As always, please let me know if you have any suggestions for improvements. These are always a work in progress!
U1: Carbon dioxide and water vapour are the most significant greenhouse gases.
U2: Other gases including methane and nitrogen oxides have less impact.
U3: The impact of a gas depends on its ability to absorb long wave radiation as well as on its concentration in the atmosphere.
U4: The warmed Earth emits longer wavelength radiation (heat).
U5: Longer wave radiation is absorbed by greenhouse gases that retain the heat in the atmosphere.
U6: Global temperatures and climate patterns are influenced by concentrations of greenhouse gases.
U7: There is a correlation between rising atmospheric concentrations of carbon dioxide since the start of the industrial revolution 200 years ago and average global temperatures.
U8: Recent increases in atmospheric carbon dioxide are largely due to increases in the combustion of fossilized organic matter.
A1: Threats to coral reefs from increasing concentrations of dissolved carbon dioxide.
A2: Correlations between global temperatures and carbon dioxide concentrations on Earth.
A3: Evaluating claims that human activities are not causing climate change.