1. EARTH’S MOVING SURFACE
CHAPTER 4 LESSON 1
EARTH’S MOVING SURFACE

2. 4.1 INFORMATION

6. PLATE TECTONICS
1 - Earth’s surface is broken into large, rigid pieces

7. PLATE TECTONICS
2 -The plates move with respect to each other

8. TECTONIC PLATES
The pieces of Earth’s surface that move over Earth’s surface very slowly.

9. TECTONIC PLATES

10. TECTONIC PLATES
Earth has 15 large tectonic plates, plus many smaller plates.

11. TECTONIC PLATES
The motion of tectonic plates forms volcanoes and mountains and causes earthquakes.

13. CRUST
Earth’s outermost layer

14. OCEANIC CRUST
Crust under the oceans.

15. OCEANIC CRUST
Thin and Heavy

16. OCEANIC CRUST
Made of Igneous Rock

17. CONTINENTAL CRUST
Crust under the continents.

18. CONTINENTAL CRUST
Thick and Light

19. CONTINENTAL CRUST
Made of all 3 Rock Types

20. LITHOSPHERE
The crust and the uppermost part of the mantle

21. LITHOSPHERE

22. ASTHENOSPHERE
The partially melted portion of the mantle below the lithosphere

23. ASTENOSPHERE
The asthenosphere can bend more easily than the lithosphere because it is hotter than the lithosphere.