Here's a breakdown of the crust:
* Earth's Crust: Earth has two types of crust:
* Continental crust: This is thicker (around 30-70 km) and less dense, made up of mostly granite and other igneous rocks. It forms the continents.
* Oceanic crust: This is thinner (around 5-10 km) and denser, composed of mostly basalt. It forms the ocean floor.
* Other Planets and Moons: Other rocky bodies in space also have crusts, though their composition and thickness can vary widely. For example, the Moon's crust is relatively thick and composed mostly of anorthosite (a type of feldspar rock).
Think of it like this: The crust is like the skin of an apple, it's the outer layer that protects the inside.
