Winter can be a hard time for animals.
Its cold, and its hard to find food.
Some animals, like bats and bears, solve this problem by sleeping through the winter.
In Japan, many seabirds fly to Australia for the winter.
Many European birds spend the winter in central Africa.
Maybe some people in your family like to fly south for the winter too!
Another important part of a road trip is rest stops.
Similarly, birds cant make the whole trip in one go.
They need to make a couple of stops along the way.
How do birds know which way to go?
They can sense the earths magnetic field.
The planet earth is a big magnet.
you might make a gadget called acompassthat uses a small magnet to point at the earths north pole.
You need:
Rub the end of the needle against the magnet about thirty times.
This will turn the needle itself into a small magnet.
Lay the pencil across the top of the drinking glass, letting the needle hang down into the glass.
Now that the needle is able to spin freely, it should point north!
Even when you turn the glass and the pencil, the needle should still point in the same direction.
Check on a map to see if it worked.
If you dont have time to make this, your smartphone probably has a compass in it too.
(Compass activity modified fromhere.)
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