Recent Warming - How Do We Know?

The video discusses global temperature trends since 1850, highlighting a general warming trend with recent acceleration. It contextualizes current climate changes by comparing them to historical data, showing that climate has always been variable. Antarctic ice core data is used to illustrate temperature fluctuations over thousands of years.

What is the general trend of the Earth's average surface temperature since 1850?

• Fluctuating without a trend

• No change

• Warming

• Cooling

How has the rate of warming changed in recent times?

• It has remained constant

• It has slowed down

• It has reversed

• It has accelerated

By how much has the Earth's surface warmed since the early 20th century?

• Exactly 1 degree Fahrenheit

• More than 1 degree Fahrenheit

• Less than 1 degree Fahrenheit

• 2 degrees Fahrenheit

Is the current warming trend of the Earth's surface unprecedented?

• Yes, it is unprecedented

• No, the climate is always changing

• Yes, but only in the last decade

• No, the climate has always been stable

What do the temperature data from Antarctic ice cores show?

• A constant increase in temperature

• Stable temperatures over thousands of years

• Significant temperature changes over thousands of years

• No significant changes in temperature