Ice Core Demonstration: The Past is the Key to the Future

Ice Core Demonstration: The Past is the Key to the Future

Climate scientists have used the gases trapped in ice cores over the last quarter of a century to understand how Earth's atmosphere has changed in the past. They use this information to then build models that try and predict how the climate system may change in the future.

ice core image

An ice core. Credit: NASA's Goddard Space Flight Center/Ludovic Brucker
 

Goals Header
Learning Goals

  • Understand that snow forms into ice on glaciers and ice sheets via compaction.

  • Understand that air bubbles from the atmosphere that are present in the snow become trapped as the snow turns into ice and can be sampled 100,000's of years later.

Teaching Materials

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Description

The students will come to understand how an ice core forms and how they are useful in looking at past atmospheric concentrations of carbon dioxide.

Activity 1 – Engage (5-10 minutes)  Age of Trapped Carbon Dioxide

Show the students an image of ice core carbon dioxide data.

Activity 2 – Explore (5-10 minutes) Trapping Carbon Dioxide

Students make observations about snow in a sealable bag.

Activity 3 – Explain (5-10 minutes) From Ice in a Bag to Glacier Formation

Have a group discussion about students’ observations.

 

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