Ice cores!

How do scientists obtain ice cores?

• They drill them out of the ground of cold areas

• They freeze water samples collected from warm areas

• They freeze water samples that they create using carbon injection

• They just find them

Which areas produce the most ice cores?

• Antarctica

• Greenland

• Tall Mountains

• China

• The United States

How old are the oldest ice cores?

• 80,000 years

• 800,000 years

• 8,000,000 years

• 80,000,000 years

Where are the oldest ice cores produced?

• Antarctica

• Greenland

• Tall Mountains

• China

• The United States

What kind of information do ice cores contain?

• Concentration of CO₂ in the Atmosphere in past years

• Concentration of Methane in the Atmosphere in past years

• The temperature of the Earth in past years

• Evidence of volcanic eruptions in past years

What part of ice cores tells us what the atmosphere was like in the past?

• The water when the ice cores melt

• Each thin layer of ice

• The air bubbles trapped in ice cores

• The rings of the ice core

How long are some of the longest ice cores?

• 3m (3 meters or 10 feet)

• 3 dam (3 decameters or 100 feet)

• 3 hm (3 hectometers or 1,000 feet)

• 3 km (3 kilometers, or 10,000 feet, or 2 miles)

What specifically do scientists measure in the ice cores?

• The concentration of gases

• The thickness of the rings of the ice core

• The height of the ice cores

• The thickness of the layers of the ice core

What is measured left to right and labeled on the X axis? (Click on the picture to zoom in)

• Temperature

• Time

• Mass

• Carbon Dioxide

What is measured up and down on the Y axis in the red portion of the graph? (Click on the picture to zoom in)

• Temperature

• Time

• Mass

• Carbon Dioxide