Greenland's Melting Ice: Impact on Sea Levels and Climate Change

The video discusses the work of polar explorer John Helscher, who uses depth survey equipment to study melt lakes within the ice sheet. The research aims to estimate melt water volume, which affects ice sheet movement and sea level rise. Coastal weather observations indicate rising temperatures and increased glacier flows in Greenland. NASA's research shows a 30% increase in melt water production over 17 years, contributing to glacier acceleration. Greenpeace's expedition highlights the impact of climate change on Greenland's ice sheet, urging industrialized countries to reduce greenhouse gas emissions. If the Greenland ice sheet melts completely, sea levels could rise by up to seven meters.

What is the primary reason for estimating the meltwater volume in lakes within the ice sheet?

• To calculate the ice sheet's thickness

• To measure the depth of the lakes

• To assess its role in accelerating ice sheet movement

• To understand the shade of blue in the lakes

What has been observed in coastal weather over the last two decades?

• No significant change in temperatures

• A decrease in glacier flows

• A decrease in temperatures

• An increase in temperatures

According to NASA's research, by how much has meltwater production increased in the last 17 years?

• 30%

• 20%

• 40%

• 10%

What is the main focus of Greenpeace's expedition in Greenland?

• To measure air pollution levels

• To explore new shipping routes

• To document the impact of climate change on ice sheets

• To study marine life in the Arctic

What could be the potential sea level rise if the entire Greenland ice sheet melts?

• Up to 5 meters

• Up to 7 meters

• Up to 10 meters

• Up to 3 meters