Greenhouse Gases - How Do We Know?

The video discusses the history of CO2 concentration in the atmosphere over the last 10,000 years, highlighting a dramatic increase since the Industrial Revolution due to human activities like burning fossil fuels. It explains how cars and other fossil fuel uses contribute to CO2 emissions, which are invisible but detectable with infrared technology. The video also covers the broader impact of fossil fuel combustion on greenhouse gas levels, emphasizing the unprecedented changes in CO2, methane, and nitrous oxide levels, as revealed by ice core data.

What has caused the dramatic increase in CO2 levels since the Industrial Revolution?

• Natural volcanic activity

• Burning of fossil fuels

• Increased plant respiration

• Solar flares

How much CO2 is released when 100 pounds of gasoline is burned in a car?

• 300 pounds

• 200 pounds

• 400 pounds

• 100 pounds

What tool would allow us to see CO2 emissions from tailpipes?

• Infrared goggles

• Microscopes

• X-ray glasses

• Ultraviolet lenses

Which of the following is NOT a contributor to greenhouse gas levels?

• Destruction of natural forests

• Energy production

• Transportation

• Increased rainfall

What do ice cores help us understand about human impact?

• Patterns of animal migration

• Alterations in greenhouse gas levels

• The age of the Earth

• Changes in sea levels