Aim: How is Earth’s interior Structured?

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Presentation transcript:

Aim: How is Earth’s interior Structured? Do Now: Why did different layers form on Earth? What material do you think make up those layers?

Where would the highest temperatures be located? I. Layers of the Earth layers are identified by their composition, temperature and density. Where would the highest temperatures be located?

A) Crust - thin outer rocky layer (we live on this layer) - least dense of all the layers (on the top) - Oceanic Crust – mostly Basalt bedrock (more dense) - Continental Crust – mostly Granite Bedrock (less dense) The deepest hole drilled by man is 7.6 miles deep (Kola Peninsula, Russia). That is only 1% of the Earth’s entire thickness.

- thickest layer consisting of a plastic fluid-like material. B) Mantle - thickest layer consisting of a plastic fluid-like material. - Meteorites provide clues as to what the interior of Earth is made of. (they are made from the same material at the same time) Chondrites: stony (non-metallic) meteorites that were formed from dust and rocks that were present in the early solar system.

- Inner Core solid iron and nickel C) Core - deepest layers of the Earth (most dense) - composed of iron and nickel (same as meteorites) - Inner Core solid iron and nickel - Outer Core liquid iron and nickel

II. Parts of the Crust A) Lithosphere – combines the crust and uppermost mantle. - continents are attached to this part

B) Asthenosphere – - rocks are partially melted in this layer (plastic-fluid like material) - the lithosphere floats on the asthenosphere moving the continents around. How can the lithosphere float on the Asthenosphere?

Moho - (Mohorovicic Discontinuity) - separates the crust from the mantle within the lithosphere.

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Please complete the “Inferred Properties Of Earth’s Interior worksheet Closure: Please complete the “Inferred Properties Of Earth’s Interior worksheet