Earth Science

Earth as a Planet

Earth’s Interior Material

Study Tip
Since it's difficult to travel to the center, scientist use seismic waves, rocks, and calculations of Earth's density and magnetism to determine what's inside

Earth’s Interior Material

  • The types of rocks on the Earth’s crust are less dense than the total density of the Earth, meaning that the core of the Earth is very dense.
  • Because Earth has a magnetic field, there must be metallic element such as Iron and Nickel in the Earth’s crust.
  • Meteorites that have been formed when the solar system was relatively new are composed of materials that are similar to those in the Earth’s interior.
Study Tip
Since it's difficult to travel to the center, scientist use seismic waves, rocks, and calculations of Earth's density and magnetism to determine what's inside
Inside the Earth, various metals and other elements
Inside the Earth, various metals and other elements can be found.
Concept Check
  • How do we gather clues on what the Earth’s interior is made of?
  • Why do meteorites help us understand the interior of the Earth?