Planet Earth facts

 Facts about Earth 

1. Mountains make up about one-fifth of the earth’s landscape.

2. 4.5 billion years -the approximate age of earth.
3. 5,400°c (9,900°F) -the approximate temperature of earth’s inner core.4. There are four main layers inside the Earth. From in, they are the crust, mantle, outer core, and inner core.
5. 1.5 million species of plants and animals live in tropical rainforests.
6. 2CM(0.7 in)- average annual rainfall in the Sahara Desert, compared with 180cm (70 in) a year in a tropical rainforest.
7. 14°c(57°F)- the average temperature on Earth’s surface.
8. The Largest Tectonic Plate is the Pacific Plate. It is The only Large Plate that doesn’t carry a Continent.

Earth formed about 4.5 billion years ago, but it was a very differnt place then. Its surface was a hot inferno of mostly molten rock, with little or no liquid water and no oxygen in the atmosphere . Since then Earth has developed oceans, continents, an oxygen-rich atmosphere – and life.