NASA | Arctic Sea Ice Shrinks to Yearly Minimum -- Sept. 9, 2011

The video discusses the significance of sea ice in the Arctic, its impact on global climate, and the factors contributing to its melting. It highlights NASA's efforts in studying polar changes using satellites and aircraft. The video also touches on the relationship between climate change and natural disasters, and provides resources for further information.

What role does sea ice play in the Earth's climate system?

• It only affects local weather patterns.

• It has no effect on the Earth's climate.

• It reflects sunlight, helping to regulate temperature.

• It absorbs sunlight, warming the ocean.

How does the melting of sea ice affect polar bears?

• It has no impact on their habitat.

• It provides them with more food.

• It brings them closer to human habitats.

• It takes them further from their food sources.

What is one of the main concerns about the changes in sea ice extent over the past 30 years?

• The stability of the Antarctic ice sheet.

• The decrease in global temperatures.

• The opening of the Northwest Passage.

• The increase in polar bear population.

What is one method NASA uses to study polar ice changes?

• Building ice stations in the Arctic.

• Using satellites to cover vast areas.

• Sending submarines under the ice.

• Deploying drones for aerial surveys.

What is the relationship between recent natural disasters and climate change?

• They are decreasing in frequency.

• They are directly caused by volcanic activity.

• They are consistent with a warming planet.

• There is no evidence of any connection.