Earth

Definition

Earth is our home planet and is the third planet from the Sun in our solar system. It has an atmosphere, supports life, and has a variety of landforms such as continents, oceans, and mountains.

Related terms

Axis: An imaginary line that runs through the Earth's center, around which it rotates.

Equator: The imaginary line that divides the Earth into northern and southern hemispheres.

Tectonic Plates: Large pieces of Earth's crust that float on the semi-fluid mantle below and can move, causing earthquakes and forming mountains.