Earth’s Layers Guided Notes Earth’s approximate age is ___________________________________ years When Earth was forming, what happened to the densest materials? ____________ __________________________________________________________________ Earth’s main layers are the ______________, the ______________, and the ______________ To know what the interior of the Earth is made of, scientists study _______________ _____________________________________________________________________ Made of… Layer Oceanic Thickness Continental Crust Mantle Core How are Earth’s layers similar to an egg? o Shell = o White = o Yolk = Physical Structure of the Earth o Crust – o Lithosphere – o Outer Core – o Inner Core – Tectonic Plates o Earth’s crust is broken into about _______ different pieces. o These “plates” move about on top of the ____________________. Label the continental crust, oceanic crust, lithosphere, and asthenosphere Comprehension Questions 1. TRUE OR FALSE: The densest layer of the Earth is the crust 2. Which is the thinnest layer of Earth? ________________ 3. Which layer of the Earth has the hottest temperatures? ________________ 4. Which layer is home to all life on Earth? ________________ 5. Which type of crust is the thinnest? ________________ 6. Parts of which two layers make up the lithosphere? ________________ & ________________ 7. The lithosphere, or plates, rests on the ________________.