But what do these directions mean? North
is the direction that
points from where you
are to the Earth's North
Pole. We can find north
by looking at stars and
constellations. We can
also find north with a
compass. From any place on Earth, a compass will
always point north. And once you find north, you can
figure out which way is south, east, and west.
Why does a compass point north? That's because a
compass is a small magnet. And a compass works
because the Earth also acts like one giant magnet!
Deep below the Earth's surface is the Earth's core,
made of iron and nickel. The outer part of the core is
liquid metal that moves around the solid inner core.
This motion creates a magnetic field around the Earth. Like
all magnets, the Earth has two poles. The magnetic needle
on a compass will always point toward the North Pole.
|See if you can find north
by making your own