Northern and Southern Hemispheres

Earth's Two Halves: The Northern and Southern Hemispheres

Earth is split into two main halves called hemispheres. The dividing line is called the equator. The equator is an imaginary line that circles the middle of Earth at 0° latitude. Everything north of the equator is the Northern Hemisphere. Everything south is the Southern Hemisphere.

What Makes Each Hemisphere Different?

The Northern Hemisphere has 68% of Earth's land, most of the biggest continents, and about 90% of people. North America, Europe, most of Asia, and the Arctic are all here. The Southern Hemisphere is mostly ocean—about 80%! It includes Australia, Antarctica, the lower parts of Africa and South America, and only 10% of Earth's people. Some countries, like Ecuador or Kenya, sit right on the equator and are in both hemispheres!

Opposite Seasons: Earth's Tilt

Earth is tilted on its axis. Because of this, when the Northern Hemisphere is tilted toward the sun, it is summer there and winter in the Southern Hemisphere. Six months later, the opposite happens. For example, June to August is summer in the USA but winter in Australia. December to February is winter in the USA but summer in Australia. It's like Earth is wearing opposite outfits—when one half bundles up for winter, the other puts on shorts for summer!

Different Stars and Weather

Each hemisphere sees different stars. People in the Northern Hemisphere can spot the North Star and Big Dipper. In the Southern Hemisphere, people see the Southern Cross. The Southern Hemisphere has more ocean, which affects its climate. Some say water drains in opposite directions, but this only happens in big storms, not in sinks or toilets.

Holidays and Traditions

Holidays look different, too. In Australia, Christmas happens during summer. People might celebrate at the beach!

Interesting Fact: The equator passes through 13 countries, and those places are in both the Northern and Southern Hemispheres at once!