2018 Arctic Sea Ice Ties for Sixth Lowest Minimum Extent on NASA Record

NASA collaborates with the National Snow and Ice Data Center to monitor Arctic sea ice, which fluctuates seasonally. The 2018 minimum extent was among the lowest recorded. NASA uses various methods, including Operation Icebridge and passive microwave technology, to study sea ice. The newly launched ISAT 2 satellite measures ice thickness, providing crucial data on Arctic changes. The video explains the differences between perennial and seasonal ice, highlighting the impact of climate change on ice age and thickness. NASA's ongoing research aims to link ice data to better understand polar region changes.

What is the significance of the 2018 minimum sea ice extent in the Arctic?

• It was the highest recorded extent.

• It was the first time sea ice was measured.

• It was the sixth lowest since satellite records began.

• It was the same as the 2000 extent.

Which NASA mission involves flying over sea ice to collect data?

• Mars Rover

• Apollo 11

• ISAT 2

• Operation Icebridge

What new capability does the ISAT 2 satellite provide?

• Observing forest growth

• Measuring sea ice thickness

• Tracking ocean currents

• Monitoring volcanic activity

How does seasonal ice differ from perennial ice?

• Seasonal ice is saltier and weaker.

• Perennial ice forms from freshwater.

• Perennial ice melts every summer.

• Seasonal ice is thicker and stronger.

Why is the thickness of sea ice an important measure?

• It predicts the weather patterns.

• It shows the age of the ice.

• It helps understand the health of sea ice.

• It indicates the color of the ice.