Pulling Without Touching: teacher key

Magnets, grade 5 edition, written for 5th grade. Magnets pull and push across empty space. Find out why and how Earth is one too.

Read the book. Print this page for the key.

Questions and answers

What are domains?
- Tiny magnetic regions (answer)
- Kinds of compasses
- Parts of the Sun
What happens to a permanent magnet if it is heated enough?
- It gets stronger
- It loses its magnetism (answer)
- It turns to stone
What makes Earth's magnetic field?
- Currents from moving iron in the outer core (answer)
- Winds in the sky
- The Moon
When was a lodestone compass used in navigation?
- As early as 1086 (answer)
- In 1986
- Last year
Why do magnets need care around small children?
- They can pull together inside the body if swallowed (answer)
- They can melt
- They are too bright