Impact of Sea Ice Loss

The video discusses the significant decline in Arctic sea ice over the past decades, highlighting its role as Earth's air conditioner. Dr. Tom Wagner from NASA explains how the loss of sea ice affects global temperatures, ecosystems, and sea levels. The Arctic is warming rapidly, leading to changes in biodiversity and increased sea levels, impacting coastal cities. The video emphasizes the need for immediate action to address climate change and reduce CO2 emissions.

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

• It has no significant role.

• It functions as Earth's air conditioner.

• It acts as a heat source.

• It increases global temperatures.

What has been the trend in Arctic sea ice over the past three decades?

• It has dramatically declined.

• It has fluctuated without a clear trend.

• It has increased significantly.

• It has remained stable.

How does the melting of Arctic sea ice affect the absorption of sunlight?

• It reflects more sunlight back into space.

• It decreases sunlight absorption.

• It has no effect on sunlight absorption.

• It increases sunlight absorption.

What percentage of Arctic sea ice has been lost since the 1980s?

• About 90%

• About 2/3

• About 50%

• About 10%

How does the loss of sea ice contribute to record temperatures?

• By stabilizing global temperatures.

• By absorbing more sunlight and heat.

• By decreasing CO2 levels.

• By increasing the Earth's albedo.

What is one of the effects of sea ice loss on Arctic ecosystems?

• Ecosystems shift rapidly.

• Ecosystems remain unchanged.

• Ecosystems become more stable.

• Ecosystems become less diverse.

What is the current rate of global sea level rise due to ice loss?

• About 1.5 mm per year

• About 0.5 mm per year

• About 3 mm per year

• About 5 mm per year

Which US cities are already experiencing flooding due to rising sea levels?

• Los Angeles and San Francisco

• Miami and New York

• Chicago and Houston

• Seattle and Boston

What is a potential future scenario for the Arctic regarding ice coverage?

• The Arctic will be completely ice-free year-round.

• The Arctic will have more ice than ever before.

• The Arctic will always have some ice in winter.

• The Arctic will have no impact on global climate.

What is a crucial step in addressing the impacts of climate change?

• Reducing CO2 emissions.

• Ignoring sea level rise.

• Focusing only on short-term impacts.

• Increasing CO2 emissions.