Bővebb ismertető
How the world worksOur world is an amazing place! It is the only planet we know about where people, animals and plants can live. We can live here because we have water and sunlight, and can grow food and breathe the air.What is the world made of?The world is made mostly of rock. Towards the Earth's centre (called the core) the rock melts because it Is so hot. We live on a thin layer of land around the outside, called the crust.A diagram of how the world looks on the inside.PlatesThe Earth's crust is mode up of giant pieces of rock called plates. The edges of the plates sometimes move against each other, causingEarth's crustearthquakes. Hot gas and rocks from under the crust sometimes explode through volcanoes.r" Most of the mountains in .v.^the world were pushed up '; millions of years ago When^ pldtes crashedJogether.Mantle (hot rocks under the crust)During eruptions hot rock called magma is pushed\ up from under the^ Earth's crust. When the magma cools, it forms new land.