Fun planet Earth facts

*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 anodour, 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 world's largest desert (outside ofthe polar regions) is the Sahara, it covers about one third of Africa!

*Stretching out to an impressive length of 6696 kilometres (4160 miles) long, the Nile River is the longest river on earth.

*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 (29029 feet) above sea level. Check out the highest mountains on each continent of the Earth

*On average the Atlantic Ocean is the saltiest of Earth’s major oceans

An earthquake is a shaking, or a series of shocks, generated by a sudden movement in Earth's crust or upper mantle. Earthquakes occur when stresses in Earth's upper layers build up to the point where something has to give. This quiz will explore the phenomena and observations associated with earthquakes.