1. GeologyThe study of the earth, how it was formed, andhow it has changed!

2. Layers of the Earth 3. Layers of the Earth1) Crust a) of the crust is covered by oceans, rivers, lakes, etc. (hydrosphere)b) 5-40 miles thickc) Another name for the crust is the lithosphere: the rock shell covering the earth 4. Layers of the Earth2) Mantle a) Some areas of solid rock and some areas of melted rockb) This is the THICKEST layerc) The plates float on this layerd) The aesthenosphere is the upper part of the mantle; this is where the convection currents move the plates 5. Layers of the Earth3) Outer Core a) Melted metal (iron and nickel) b) Extremely hot4) Inner Core a) Solid metal (iron and nickel) b) This is the HOTTEST layer, even though the iron is notmelted c) It is solid metal because of the pressure from all ofthe other layers pushing down on it 6. Follow Up Activity Read pages D6-7 in your Science text book Make sure to read the CAPTIONS for each ofthe layers!! Homework: Cut and Paste sheet on the layers Be sure to use your notes and thinking skills to put the facts with the corrects layers