WEEK-1abcdefghijklmnopqrstuvwxyzabcdefjhijklmnopqrstuvwxyz.pptx

lesson 1 science 10

1. RECALL

2. LET’S GROUP UP!

3. Directions: Group yourself into 5 and answer K-W-L Chart with your groupmates in 5 minutes.

4. PRE-ASSESSMENT Science Book 10 Page 4-5

5. PLATE TECTONICS Lesson 1

6. LEARNING OBJECTIVES: D iscuss the Plate Tectonic Theory ; Describe the movement of plate tectonics; and Identify the major and minor plates across the globe.

7. OVERVIEW: LAYERS OF THE EARTH

8. LITHOSPHERE The lithosphere is said to be in constant but very slow motion. These motions are not the same everywhere. This movement of the lithosphere is called tectonics . Composed of crust and upper mantle.

9. LITHOSPHERE There are two kinds of crusts: ( Continental & Crustal ) plates which is thicker but less dense, and Oceanic Plates which are thinner but compact and denser.

10. What is Plate Tectonics? Plate Tectonics suggest that Earth’s crust is made up of plates that move very slowly but constantly and interact in various ways thus, producing earthquakes, mountains, volcanoes, and other geologic features.

11. Plate Tectonics Theory According to the Plate Tectonic Theory , the entire lithosphere of the Earth is broken into numerous segments called plates.

12. Seven (7) Earth’s Major Plates Pacific Plate African Plate Eurasian Plate N-American Plate S-American Plate Indo-Australian Plate Antarctic Plate

13. Earth’s Minor Plates Cocos Plate Philippine Plate Nazca Plate Caribbean Plate Scotia Plate Arabian Plate

14. EARTHQUAKE Lesson 2

15. Can you still remember the P-Waves, S-Waves & L-waves? RECALL

16. - They match the seismogram to a chart called Richter scale . Invented in 1935 by Charles Francis Richter.

17. LEARNING OBJECTIVES: a. Locate the epicenter of an earthquake using triangulation method. b. Describe the distribution of an earthquake and active volcanoes in the world

18. EARTHQUAKE A vibration of Earth due to the rapid release of energy. Faulting is the most common reason of earthquakes.

19. Plate movements may result in earthquakes. Earthquakes may happen anytime, either on land or under water. Earthquakes on land can be caused either by tectonic plates movements or volcanic eruptions. Earthquakes under the sea can cause tsunami .

20. Video

21. TYPES OF EARTHQUAKES Tectonic Volcanic Collapse Explosion

22. How to locate the Epicenter? If we have at least three recording stations the epicenter can be determined using the triangulation method.

23. Triangulation Method It uses distance information from three seismic stations to locate the earthquake epicenter.

24. Triangulation Method On a map, circles are drawn around each seismic station. The radii of the circles are scaled to the estimated distance from the station to the earthquake. The three circles will intersect at one point that locates the earthquakes.

25. Triangulation Method

26. Science Book 10 Pages 8-10 Activity: “Find the Center”

27. Questions to answer: Where is the epicenter of hypothetical earthquake? What difficulty will you encounter if you only have data from two recording stations? What is the distance of the epicenter from the seismic station? What do you think is the importance of determining the epicenter of an earthquake?

28. Questions to answer: 5. What are you going to do if an earthquake occurs in your place?

29. FACT OR BLUFF The epicenter of an earthquake can be determined using the triangulation method. FACT

30. FACT OR BLUFF 2. All earthquakes are felt by humas. BLUFF

31. FACT OR BLUFF 3. Earthquakes can be prevented. BLUFF

32. FACT OR BLUFF 4. Surface waves are most destructive type of seismic waves. FACT

33. FACT OR BLUFF 5. Earthquakes are caused by the sudden movement of rocks in the earth’s crust. FACT

34. Thank You!