NASA Climate Science

What does NASA use to observe Earth's climate?

• Telescopes

• Balloons

• Satellites

• Submarines

What is a major cause of climate change according to NASA?

• Human activities

• Volcanoes

• Solar flares

• Ocean currents

What is one effect of climate change mentioned in the text?

• More rainbows

• Rising sea levels

• Longer nights

• Increased snowfall

What does NASA's Earth Science Division operate?

• Weather stations

• More than 20 satellites

• Space shuttles

• Underwater labs

What does NASA's data help with?

• Making movies

• Growing plants

• Understanding climate change

• Building rockets

Click Vital Signs...then Carbon Dioxide

What has happened to the level of carbon dioxide in Earth's atmosphere during the last 100 years?

• Remained steady

• Slowly decreased

• It has risen more than 50% higher than any time in history.

• It has continued to increase and shown no signs of decreasing.

Click Global Temperature...and look at the graph.

What has Earth's average temperature done since around 1970?

• Increased by 1 Celsius degree worldwide

• It has not changed

• It has increase by 100 Celsius degrees

• It has decreased since 1970, but only a little.

Scroll down to the colorful time lapse and play.

Where is the global temperature increase most severe.

• At the equator

• At the polar regions (especially north)

• Over the oceans

• Over the land

Click Artic Sea Ice.....view the graph and the time series. The area that looks cloudy is ocean ice. What is going on there. (choose 3)

• It shrinks and grows every year with the seasons.

• It has steadily decrease in size

• It has melted and gone into the ocean.

• It has grown larger over time.

Click Sea Level

What does the graph show?

• a steady increase

• a steady decrease

• no change