Global Warming

The video discusses the phenomenon of global warming, which was first noticed in the 1980s as a rise in average global temperatures. Unlike past natural climate changes, this warming is linked to human activities, particularly greenhouse gas emissions. Scientists predict significant temperature increases over the next century, which could lead to severe climate events, including droughts, floods, and storms. The melting of ice caps could raise sea levels, making coastal areas uninhabitable. To prevent these outcomes, it is crucial to control greenhouse gas emissions, despite the expected rise in global energy use. Without significant changes, global warming will continue to worsen, with potentially catastrophic effects.

What was the significant climate observation made by scientists in the 1980s?

• A decrease in greenhouse gas emissions

• A decrease in global temperatures

• A rise in global temperatures

• Stable global temperatures

What is the minimum predicted temperature rise over the next 100 years?

• 3.0°C

• 5.8°C

• 1.4°C

• 0.5°C

What could be a consequence of the most extreme predicted temperature increase?

• Decrease in sea levels

• Stabilization of climate

• Melting of ice caps

• Increase in polar bear population

What is necessary to prevent catastrophic climate changes?

• Ignore global warming

• Increase fossil fuel usage

• Freeze greenhouse gas emissions

• Increase greenhouse gas emissions

By 2050, what could happen if significant changes are not made?

• Greenhouse gas emissions could double

• Global temperatures could decrease

• Energy use could decrease

• Sea levels could stabilize