Do You Know...Your Earth - Part 2?

Do you know what is the difference between a magma and a lava?

Editor's note: Magma is the hot liquid rock under the surface of the Earth. It is known as lava after it comes out of a volcano.

Do you know that Hawaii is slowly moving towards Japan?

Editor's note: Hawaii is moving towards Japan at the speed of 10cm a year. This is because they are on different tectonic plates and the natural movement of the plates are causing the phenomenon.

Do you know how tsunamis occur?

Editor's note: Earthquakes that occur out at sea cause huge waves known as tsunamis, which is capable of reaching land and endangering people.

Do you know that the earth is not exactly round?

Editor's note: The Earth is not perfectly round. It is elliptical. The furthest distance between the North Pole and the South Pole is around 20,004 kilometres or 40,008 kilometres round trip i.e. the North Pole to the South Pole to back to the North pole on the other side. The distance of the Equator is 40,075 kilometres. In geography, these measurements give rise to a semi-minor axis and semi-major axis respectively.

Do you know that earthquakes happen more often than we think they do?

Editor's note: Although earthquakes happen often and some can be deadly, most are very small and not even felt by humans.

Do you know that there is one kind of rock that can float on water?

Editor's note: The volcanic rock known as pumice is the only rock that can float in water. Pumice stone are often used by beautician to remove dead skin cells during a manicure and a pedicure.