Ice Core Video Quiz

How old is the piece of ice from Antarctica mentioned in the text?

• 10,000 years

• 20,000 years

• 50,000 years

• 100,000 years

What do the bubbles in the ice trap?

• Bacteria

• Minerals

• Air from the past

• Water

What has been learned from studying the air trapped in ice bubbles?

• The earth is cooling down

• There is more nitrogen in the air now

• Oxygen levels have decreased

• Carbon dioxide is higher now than in the last million years

Where is the Scripps Institution of Oceanography located?

• Southern California

• Northern California

• Florida

• Maine

What does Dr. Jeffrey Severinghaus study?

• Ice cores

• Marine biology

• Desert climates

• Volcanoes

From where is the ice core mentioned in the video collected?

• The Himalayas

• Greenland

• Taylor Glacier in Antarctica

• The Alps

What happens to air bubbles in ice when they are below 600-700 meters?

• They turn into liquid water

• They disappear

• They turn into clathrates

• They expand

What is used to extract ancient air from ice for measurement?

• A hydraulic press

• A vacuum flask

• A centrifuge

• A microwave

What does the mass spectrometer measure?

• The volume of the ice

• The masses of tiny things

• The temperature of the ice

• The age of the ice

What do isotopes of nitrogen tell us?

• The mineral content of the ice

• The age of the ice

• Ancient temperature

• The depth of the ice