Permafrost Flashcard 1

Front

What is permafrost?

Back

Permafrost is any ground that stays completely frozen for 2 or more years.

Front

What happens when trapped methane is released from permafrost?

Back

Trapped methane can light on fire.

Front

What can happen when diseases frozen in permafrost are unthawed?

Back

Unthawing can bring back those diseases.

Front

What does permafrost contain?

Back

Permafrost contains soil, rocks, and sand that are held together by ice.

Front

What gases are released when permafrost thaws?

Back

When permafrost thaws, it releases carbon dioxide and methane into the atmosphere.

Front

How long must ground remain frozen to be classified as permafrost?

Back

Ground must remain frozen for 2 or more years to be classified as permafrost.

Front

What is the significance of methane in relation to climate change?

Back

Methane is a potent greenhouse gas that contributes to climate change.

Front

What role does permafrost play in the carbon cycle?

Back

Permafrost acts as a carbon sink, storing carbon that can be released when it thaws.

Front

What are the potential ecological impacts of thawing permafrost?

Back

Thawing permafrost can lead to the release of ancient diseases and disrupt local ecosystems.

Front

What is the relationship between permafrost and Arctic wildlife?

Back

Permafrost provides a stable habitat for Arctic wildlife, but its thawing can alter these habitats.