Earth Structure

use this video as reference: http://magma.nationalgeographic.com/ngexplorer/0603/quickflicks/
STUDY
PLAY
The Earth's Inner Core
is at the very center of the earth
Iron
is the element that makes up most of the Earth's inner core
The earth is approximately how old?
5 billion years
Earthquakes
are caused by plate movement
Picture of the earth's core
Earth's Crust
is made up mostly of rock
The center of the earth
is about 4000 miles below the surface
Earth's outer core
is made of liquid metal
Geophysicists
study earth's structure and development
Jupiter
is the most massive planet