Layers of the Earth for grade six pupils.pptx

layers of the earth for grade 6

1. Layers of the Earth

2. Essential Question: How are layers of the Earth different from one another? Standard: S6E5a. Compare and contrast the Earth’s crust, mantle, and core including temperature, density, and composition.

3. Essential Question: How are layers of the Earth different from one another? Standard: S6E5a. Compare and contrast the Earth’s crust, mantle, and core including temperature, density, and composition.

4. The Earth is made up of 3 main layers: Crust Mantle Core

5. Think of the layers of the Earth like the layers of a cake.

6. The Earth is like a peach or a boiled egg.

7. Use the Layers of the Earth Foldable to take notes

8. Crust Ocean Land Oceanic Crust Continental Crust

9. Thinnest layer of the Earth that ranges from only 2 miles in some areas of the ocean floor to 75 miles deep under mountains It is the upper part of the lithosphere. Two types of crust: oceanic crust and continental crust Composed of plates on which the continents and oceans rest Ocean Land Oceanic Crust Continental Crust Crust

10. The top part of the crust is made of a light material like granite. The bottom part of the crust is made of a dark, heavy rock called basalt. The crust is the only layer of the Earth which Geologist have seen. Crust

11. The Earth’s crust is like the skin of an apple.

12. Mantle Upper Mantle Lower Mantle Middle Mantle Convection Currents

13. Mantle is the rocky layer of the Earth between the crust and the core. It is about 2,900 kilometers thick. Thickest or largest layer of the Earth (making up 70% of the Earth’s mass) The hot material (magma) in the mantle rises to the top of the mantle, cools, then sinks, reheats, and rises again. These convection currents cause changes in the Earth’s surface Upper Mantle Convection Currents Middle Mantle Lower Mantle Mantle

14. The temperature and pressure of mantle increase in depth ranging from 870 degrees Celsius to 2200 degrees Celsius. It is believed that magma and lava come from mantle. The boundary between the crust and the mantle is the mohorovicic discontinuity, called Moho for short. It is named after Andrija Mohorovicic , a Yugoslavian scientist who discovered this special boundary. Mantle

15. Core Inner Core Outer Core

16. Outer Core The core is the innermost and the hottest layer of earth. It is divided into outer core and the inner core. The outer core is made up of molten iron and nickel. The inner core is made up of solid iron and nickel.

17. Outer Core Its estimated temperature of Molten (liquid) metal is about 4,700°C (8,500°F) Located about 1,800 miles beneath the crust and is about 1,400 miles thick.

18. Inner Core Solid sphere composed mostly of iron It is believed to be as hot as 6,650°C (12,000°F) Heat in the core is probably generated by the radioactive decay of uranium and other elements It is solid because of the pressure from the outer core, mantle, and crust compressing it tremendously

19. What do these two images tell us about the layers of the Earth?

20. Inner Core Solid Outer Core Liquid Mantle Crust Lithosphere – Crust and Upper Layer of the Mantle Layer of the Mantle (asthenosphere) that consists of hot rock of tar-like consistency, which slowly moves

21. Temperature increases as depth increases

22. Density and Pressure increase as depth increases

23. Add this statement to the arrow going down on your foldable. Temperature, Density and Pressure increases as depth increases

24. Which layer of the Earth has the greatest temperature, pressure, and density? Core

25. Put a check (/) if the statement is correct or cross (x) if it is not. Write your answers in your notebook

26. 1. Plants and animals live on crust. 2. Mantle is the layer below Earth’s crust. 3. Core, mantle, crust are the layers of the Earth from outside to inside. 4. Outer core is made up of molten iron and Nickel. 5. Crust is the thinnest under the continents and thickest under the ocean.

27. KEY ANSWER 1. / 2. / 3. X 4. / 5. X

28. Choose and write the letter of the correct answer. 1. On what layer of earth does man live? a. Crust b. Mantle c. Outer core d. Inner core

29. 2. What is the outer core made of? a. Molten iron b. Molten nickel c. Very hot molten rock d. Both b and c

30. 3. What layer of Earth is made of solid iron and nickel? a. Outer core b. Inner core c. Crust d. Mantle

31. 4. Which of the following best describes the mantle? a. The mantle contains soil and sand. b. The mantle contains solid iron and nickel. c. The mantle contains cold plastic materials. d. The mantle contains hot and thick liquid rocks.

32. 5. Which is true about the interior of Earth? a. The temperature and pressure is very low in the core. b. The temperature and pressure is very high in the core. c. The temperature and pressure is very high in the crust. d. The temperature and pressure in the mantle is higher than in the core.

33. KEY ANSWER 1. a 2. d 3. b 4. d 5. b

34. Assignment A. Match column A with Column B. Write the letter of the correct answer on the space provided before each number. COLUMN A __1. crust __2. Mantle __3. outer core __4. inner core __5. Moho __6. Geologist __7. lithosphere

35. Column B a. the boundary between crust and mantle b. the layer consisting of liquid iron and nickel c. the hottest layer of earth d. the largest layer of earth e. the upper part of the lithosphere f. the solid part of Earth g. scientist who studies the structure of the earth h. the study of the structure of Earth

36. KEY ANSWER 1 . e 2. d 3. b 4. c 5. a 6. g 7. f

37. Performance Task