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Layers of the Earth Composition (What it is made of) • _________________ • _________________ • _________________ The Crust • The _________________ is the _______________________ layer • It is ___________________________ km thick. • There are ________ types of ___________________. • One is _____________________ (very dense, made of ____________________). • The other is ________________________ (less dense, made of ________________________). The Mantle • The ____________________ is the ______________________ layer. • This is a very _______________________ layer. The Core • The ____________________ is made mostly of ___________________. • It accounts for _______________ of the earth’s __________________. • The _________________ is very ____________________. Earth’s Layers • How are the _______________________ layers similar to an __________________? • _____________________________________ • _____________________________________ • _____________________________________ Physical Structure of the Earth (5 Layers) • ______________________- rigid outer layer (_______________________). • ____________________________- solid rock that flows slowly (like hot _________________________). • _______________________- _______________________ layer. • _____________________ Core- _______________________ layer. • _____________________ Core- ______________________, very dense. 1 Tectonic Plates • Earth’s _________________________ is broken into about __________________ pieces. • These ___________________________ move on top of the asthenosphere. 2