Ice, Treaties and Survivors: teacher key

The Arctic and Antarctica, grade 5 edition, written for 5th grade. Learn how ice, a treaty and some tough animals shape the Arctic and Antarctica.

Read the book. Print this page for the key.

Questions and answers

What is permafrost?
- A kind of snow
- Ice that floats
- Ground that stays frozen for at least two years (answer)
When does the sea ice around Antarctica grow?
- In summer
- In winter (answer)
- Never
What does the Antarctic Treaty do?
- Lets anyone mine it
- Moves the ice
- Sets Antarctica aside for peaceful science (answer)
How do polar bears hunt seals on the ice?
- By flying
- By waiting at seal breathing holes (answer)
- By digging dens
What is a narwhal's tusk?
- A tooth that grows through its jaw (answer)
- A kind of fin
- A horn of bone