1. Science Starter 1. Which of the Earth’s layers is made up of mostly extremely hot, solid iron? 2. Which of the Earth’s layers is the largest?

2. The Layers of the Earth! SPI 0707.7.4 (Earth’s Layers) SPI 0707.7.4 Differentiate among the characteristics of the earth’s three layers.

3. What you will be learning SPI 0707.7.4 (Earth’s Layers) Differentiate among the characteristics of the earth’s three layers.

4. Lets check out an interactive before we jump into notes! Layers of Earth

5. Earth Layers The Earth is divided into 3 main layers. *Core (inner and outer) *Mantle *Crust

6. Lets compare the earth to an apple Peel = crust Fruit = mantle Outer core = core Inner core = seed

7. The Crust * The Earth’s crust is like the skin of an apple. It is very thin compared to the other three layers. *The crust makes up 1% of the Earth. * The crust of the Earth is broken into many pieces called plates.

8. Crust The crust is made up of oxygen, silicon, and aluminum There are 2 types of crust: continental and oceanic

9. The Mantle The mantle is the layer below the crust. The mantle is the largest layer of the Earth. The mantle is divided into two regions: the upper and lower sections.

10. The mantle The mantle is made of hot, solid rock –When this rock melts it becomes magma The mantle is composed of oxygen, silicon, magnesium, and iron

11. Outer Core * The core of the Earth is like a ball of very hot metals. * The outer core is liquid. * The outer core is made up of iron and is very dense.

12. Inner Core * The inner core of the Earth has temperatures and pressures so great that the metals are squeezed together and are not able to move. * The inner core is a solid.

13. Exit ticket --In your science Journal:How are the earth’s layers similar to an egg? Shell=crust Egg white=mantle Yolk=core

14. Science Starter If you journeyed to the center of the Earth, what do you think you would see along the way? Draw an illustration of your journey.

15. Review 1) What are the four layers of the Earth? 2) The Earth’s crust is very ______? 3) The mantle is the largest layer of the Earth? True or False 4) Is the Outer Core a liquid or a solid?

16. Answers! 1) Crust, Mantle, Outer Core, Inner Core 2) Thin 3) True 4) Liquid