Greenhouse gases

Understand greenhouse gases and the greenhouse effect's impact on our planet. Learn the science behind climate change!

The greenhouse effect. The good, the bad and the chemistry. Watch the video and answer the following questions. What are the two main gases in the atmosphere? What are the three greenhouse gases? Use the images to describe what causes the greenhouse effect. The image has clues but it is still too basic. Discuss short and long radiation. Use the words reflected and absorbed. Why is the greenhouse effect a useful thing? Why is the greenhouse effect a bad thing Human activities and the greenhouse effect Read the page on BBC bitesize and answer the following questions. What human activities are causing an increase in carbon dioxide gas? Burning fossil fuels Deforestation Rice farming Farming cattle What human activities are causing an increase in methane gas? Burning fossil fuels Deforestation Rice farming Farming cattle When evaluating the quality of evidence on an issue like global warming, you should consider... (you can select more than one) who did the research and whether they are trustworthy, skilled and experienced who funded the research, because that might cause some bias what methods were used to collect and analyse the data, because that might cause uncertainties in the evidence base which organisation is reporting or publishing the evidence Climate change or Global warming? This graph shows how the average temperature of the Earth has changed over about 140 years. What is the general trend in the Earth's average temperature over the 140 years? This graph shows the concentration of carbon dioxide in the atmosphere over the past 300 years. Can you explain the increase in carbon dioxide from 1850? Using the two graphs above do you think there is a link between the average temperature of the Earth and the concentration of carbon dioxide in the atmosphere? Which of theses are effects of global warming? glaciers and polar ice melting sea levels rising floods or droughts