Summary
Explains the greenhouse effect, how human activities increase greenhouse gases, and what the projected consequences for Earth's climate look like — presented accessibly and without alarm, focused on cause and effect.
Viewer safety
All ages
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Teaching resources
Discussion questions
Discussion
- What is the greenhouse effect? Is it always harmful?
- Which human activities produce the most greenhouse gases?
- What are two projected consequences of a warming climate for living things?
- What is one thing scientists, engineers, or citizens can do to slow climate change?
Quick work-a-long
Vocabulary: greenhouse effect, greenhouse gas, carbon dioxide, atmosphere, temperature, climate.
Try it: Put two thermometers in two identical clear bottles. Cover one with a plastic bag (simulating more atmosphere). Place both in sunlight for 20 minutes. Which is warmer? Relate this to the greenhouse effect.