earth
The Earth Most of the Earth’s surface is covered with water, (about 70%) and the remaining 30 % is taken up by the seven continental landmasses. Underneath the water that fills the oceans, and the dirt and plants that cover the continents, the Earth’s surface layer is made of rock. ... The crust is the upper layer of the Earth. ... The plates that fit like puzzle pieces around the Earth are made of Earth’s crust and the upper part of the mantle layer. ... This flowing layer can be pushed and deformed like silly putty because of the warmth of the earth. ... When two plates move towards each other, sometimes one of the plates is forced to go down into Earth’s hot interior at a subduction zone and volcanoes may form.