Climate Change and Carbon Dioxide Levels

The video discusses the impact of climate change, focusing on rising carbon dioxide levels due to fossil fuel burning and deforestation. It explains the seasonal cycle of CO2 in the northern hemisphere and presents historical data showing a significant increase in CO2 levels over the past 150 years. This rise in CO2, a greenhouse gas, has led to a rapid increase in global temperatures. The video emphasizes the importance of making informed choices to control future climate conditions and directs viewers to additional resources for climate education.

Who is Jeff Varadelli?

• A geologist

• A meteorologist

• A climate specialist

• A marine biologist

What causes the yearly peak in carbon dioxide levels during spring?

• Trees exhaling carbon dioxide

• Animal respiration

• Increased industrial activity

• Oceanic absorption

Why do carbon dioxide levels fall in the summer?

• Increased rainfall

• Higher temperatures

• Trees inhaling carbon dioxide

• Reduced fossil fuel use

How long is the historical record of carbon dioxide levels discussed?

• 200 years

• 1 million years

• 150 years

• 800,000 years

What was the carbon dioxide level before the industrial revolution?

• Below 200 parts per million

• Exactly 350 parts per million

• Above 400 parts per million

• Below 300 parts per million

What is the current approximate level of carbon dioxide in the atmosphere?

• 300 parts per million

• 420 parts per million

• 500 parts per million

• 350 parts per million

How have global temperatures changed over the past 150 years?

• They have decreased

• They have remained stable

• They have fluctuated randomly

• They have increased significantly

What is the main cause of the recent rapid increase in global temperatures?

• Natural climate cycles

• Solar radiation changes

• Increased volcanic activity

• Rising greenhouse gas levels

What choice do we have regarding future temperature increases?

• To rely solely on technology

• To reduce greenhouse gas emissions

• To increase fossil fuel use

• To ignore climate change

Where can you find more climate education resources?

• Jeff's climate classroom on wfla.com

• The local library

• National Geographic

• NASA's website