Rising Sea Levels

What are the two main processes that cause sea-level rise?

• Thermal expansion and ice melting

• Volcanic eruptions and earthquakes

• Deforestation and pollution

• Urbanization and industrialization

Small island nations are most vulnerable to what due to rising sea levels?

• Economic growth

• Technological advancement

• Relocation of coastal communities

• Urban development

Sea level rise is already occurring at what kind of rates?

• Slow

• Unprecedented

• Normal

• Decreasing

Sea level rise will continue for how long after greenhouse gas concentrations are stabilized?

• Days

• Months

• Centuries

• Weeks

Historically, human civilizations have responded to the risk of rising sea levels with retreat and ___.

• Expansion

• Defensiveness

• Abandonment

• Industrialization

If all glaciers and ice sheets melted, by how much would the global sea level rise?

• 100 feet

• 195 feet

• 60 meters

• 10 meters

Over how many trillion pounds of glacial ice melts from the land and enters the sea each year?

• 1,000

• 1,500

• 1,700

• 2,000

The Greenland Ice Sheet contributes how many trillion pounds of ice melt annually?

• 450

• 550

• 700

• 900

The Antarctica Ice Sheet contributes how many trillion pounds of ice melt annually?

• 450

• 550

• 700

• 900

Antarctica contains what percentage of the earth's ice?

• 50%

• 70%

• 90%

• 100%