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8.2 Thermal Energy Transfer (portion of topic covered in year 1)

Unit Notes


Nature of Science:  (from the IB curriculum)
Simple and complex modelling: The kinetic theory of gases is a simple mathematical model that produces a good approximation of the behavior of real gases. Scientists are also attempting to model the Earth's climate, which is a far more complex system.  Advances in data availability and the ability to include more processes in the models together with continued testing and scientific debate on the various models will improve the ability to predict climate change more accurately.

Unit Assessment Statements:
8.2.1
Define/describe conduction, convection, and thermal radiation in terms of the mechanisms involved in transferring thermal energy through each method.
8.2.2
Explain through which phase of matter conduction, convection, and thermal radiation will occur
8.2.3
Describe some practical examples of thermal energy transfer through each method: Conduction, Convection, and Thermal Radiation
8.2.4
Define Black Body Radiator​
8.2.5
Explain what is meant by black body radiation.
8.2.6
Draw and annotate a blackbody radiation emission spectrum graph, showing lines for examples at multiple temperatures
8.2.7
Define Intensity of radiant energy
8.2.8
Describe/explain Wien's displacement law
8.2.9
Describe/explain the Stefan-Boltzmann law
8.2.10
State what is meant by a grey body​; define emissivity​
8.2.11
Solve problems involving the concept of black body radiation, Wien's displacement law and the Stefan-Boltzmann law.
8.2.12
Define, and determine a value for, the Solar Constant​
8.2.13
State reasons why the solar constant is not considered an exact value.
8.2.14
Define Albedo​. 
8.2.15
Discuss the albedo of the Earth systems.
8.2.16
Solve problems involving albedo
8.2.17
Define/Describe the greenhouse effect, both enhanced and natural.
8.2.18
State what is meant by a greenhouse gas​. List examples of greenhouse gases that exist in our atmosphere.
8.2.19
Explain how greenhouse gases absorb energy and contribute to the energy balance of our atomsphere.
8.2.20
Describe ​some international efforts to minimize the human impact on the greenhouse effect and climate change
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