The Long Reach of Magnets: teacher key

Magnets, grade 4 edition, written for 4th grade. Magnets pull, push and point. Find out how poles, fields and Earth work together.

Read the book. Print this page for the key.

Questions and answers

What do the same poles do?
- Pull each other in
- Push each other away (answer)
- Do nothing
What are domains?
- Tiny magnetic regions (answer)
- Kinds of compasses
- Parts of the Sun
Where does Earth's magnetic field begin?
- In its poles
- In the air
- In its core (answer)
Why does a compass needle turn?
- It lines up with Earth's magnetic field (answer)
- It is pushed by wind
- It follows the Sun
What does the magnetosphere protect us from?
- Charged particles in space (answer)
- Rain clouds
- Loud noises