Magma is the hot liquid rock under the surface of the Earth, it is known as lava after it comes out of a volcano.
Natural gas doesn't have an odour, strong smells are added to it by humans so it can be detected when there are leaks.
Hawaii is moving towards Japan at the speed of 10cm a year. This is because they are on different tectonic plates.
The worlds largest desert is the Sahara, it covers about one third of Africa!
The volcanic rock known as pumice is the only rock that can float in water.
Mt Everest is the highest mountain on earth, its peak reaches 8,848 metres (29028 feet) above sea level.
On average the Atlantic Ocean is the saltiest of Earth’s major oceans.
The Earth isn't perfectly round, it is slightly fattened at the north and south poles.