Gases in the atmosphere

Reduction of pollution in MOD sites

Synopsis

This lesson plan recaps students' knowledge of infrared radiation, light and ultraviolet radiation and introduces the importance of their respective properties to the maintenance of a stable global temperature.

Students are introduced to the make up of the atmosphere and the role that various gases play in absorbing radiation (and keeping the earth warm). The lesson continues to explore the impact of changes in the volumes of specific gases in the atmosphere and highlights man's role in causing this change. The link to fossil fuels in increasing the volume of CO2 is made and students explore the direct link between their own actions and atmospheric change.

Following the exploration of CO2's impact on the atmosphere students are introduced to less well known causes of atmospheric change such as methane, halides and CFCs. Western governments are concerned with minimising output of CO2, yet some developing countries place no restrictions on the production (direct or indirect) of other potent gases. Students consider these points and debate the role of the other developed nations and their right (or otherwise) to restrict the economic development of less well developed countries.

The lesson also considers the responsibility (and potential to implement change) which we have at a local level. The MOD's Defence Estates policy is used as a case-study for responsible land management, with students exploring its proactive treatment of sites to minimise methane and CO2 output and its reactive remit for ensuring non-pollution of land (thus ensuring biodiversity and responsible CO2 production).

MOD Topic

Reduction of pollution in MOD sites

Curriculum Checklist

1.2b; 3.4c; 4d,g.

Curriculum Links

• Geography

Prior Knowledge

Properties of infrared radiation.
Composition of atmospheric gases.
Properties of gases.

Learning Outcomes

Lower ability students will:

• Be able to explain that a change in the composition of atmospheric gases impacts on global temperatures.
• Be able to explain what greenhouse gases are.
• Be able to name some atmospheric gases.
• Be familiar with some of the steps that can be taken to reduce harmful greenhouse gas emissions.
• Be aware of the need to take steps to ensure collective responsibility.
• Understand the commitment of individual Government departments to the problem of reducing global warming.

Average ability students will:

• Be able to explain how a change in the composition of atmospheric gases impacts on global temperatures.
• Be able to explain what greenhouse gases are and either their effect or how they are emitted.
• Be able to name the various atmospheric gases and identify the different properties of methane and CO2 specifically.
• Be familiar with a number of the steps that can be taken to reduce harmful greenhouse gas emissions.
• Be aware of the need to take steps to ensure collective responsibility.
• Understand the commitment of individual Government departments to the problem of reducing global warming.

Higher ability students will:

• Be able to explain in detail how a change in the composition of atmospheric gases impacts on global temperatures.
• Be able to explain what greenhouse gases are, their effect and how they are emitted.
• Be able to name the various atmospheric gases and identify and explain the different properties of methane and CO2 specifically.
• Be familiar with many of the steps that can be taken to reduce harmful greenhouse gas emissions.
• Be aware of the need for contingency planning by governments world-wide, as well as taking steps to ensure collective responsibility.
• Understand the commitment of individual Government departments to the problem of reducing global warming.

Lesson code

SC8