The Child Advocacy Center is a safe, child friendly location for children to come speak with trained interviewers or one of our medical providers. We know this can be an anxious time for you and your family. When we are able, one of our child advocates will be calling you before the interview or medical evaluation to answer any of your questions.
The thickest parts are under the continents and the thinnest parts are under the oceans. Crust. Earth's crust is made up of several elements: oxygen, 47 percent; silicon, 27 percent; aluminum, 8 percent; iron, 5 percent; calcium, 4 percent; magnesium, potassium and sodium, 2 percent. The crust is divided into huge plates that float on the mantle, the next layer.
At the center of the Earth spins the Earth's core. The core is made up of mostly iron. The outer portion of the core is liquid iron that spins and makes the earth into a giant magnet. This is where we get the names for the north and south poles.