The Natural And Human Causes Of Climate Change
Overview
The Earth has always had a changing climate. Ice ages have come and gone, sea ice has advanced and retreated, and ancient paintings even show frost fairs held on a frozen River Thames. So how do we know that the warming happening today is different, and that human activity is the cause? This lesson teaches you to read the evidence for yourself.
You will learn how scientists reconstruct past climates from ice cores and temperature records, how natural forces such as orbital wobbles, sunspots and volcanic eruptions nudge the climate, and how burning fossil fuels, clearing forests and farming have strengthened the greenhouse effect far faster than nature ever could.
Objectives
- Evidence of climate change: global temperature data, ice cores, sea ice positions, historic writing and paintings.
- Factors influencing natural climate change: orbital changes (Milankovitch cycles), sunspots, volcanic activity.
- The human influence on the atmosphere causing the enhanced greenhouse effect. For example, the use of fossil fuels, deforestation, agriculture.
Lesson Note
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Lesson Evaluation
Congratulations on completing the lesson on The Natural And Human Causes Of Climate Change. Now that youve explored the key concepts and ideas, its time to put your knowledge to the test. This section offers a variety of practice questions designed to reinforce your understanding and help you gauge your grasp of the material.
You will encounter a mix of question types, including multiple-choice questions, short answer questions, and essay questions. Each question is thoughtfully crafted to assess different aspects of your knowledge and critical thinking skills.
Use this evaluation section as an opportunity to reinforce your understanding of the topic and to identify any areas where you may need additional study. Don't be discouraged by any challenges you encounter; instead, view them as opportunities for growth and improvement.
- Which of these is the most reliable, quantitative evidence of recent climate change? A. historic paintings of frost fairs B. measured global temperature records C. old diaries D. folk tales Answer: B
- Which is a NATURAL cause of climate change? A. burning coal B. deforestation C. Milankovitch (orbital) cycles D. cattle farming Answer: C
- The enhanced greenhouse effect is caused mainly by: A. the ozone hole B. extra greenhouse gases from human activity C. more sunspots D. volcanic ash Answer: B
- A large volcanic eruption usually has what short term effect on global temperature? A. strong warming B. no effect C. slight cooling D. permanent warming Answer: C
- Which greenhouse gas is released mainly by cattle and rice farming? A. carbon dioxide B. methane C. oxygen D. nitrogen Answer: B
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Available on the Green Bridge App
Download the Green Bridge CBT app on your phone or computer to access full lesson notes, practice questions, and more.
Recommended Books
Practice Mock Questions
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