G10 Science Q1- W7- Causes of Earthquake (1).pptx

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1. Processes and Landforms Along with Convergence of Plates PREPARED BY: TYPE YOUR NAME HERE

2. S10ES – Ia-j-36.5 Describe the possible causes of plate movement

3. Processes and Landforms Along with Convergence of Plates Objectives: To be able to: 1. Explain the different processes that occur along the plate boundaries; 2. name the landforms produced in each type of plate boundary

4. Let’s PLAY a game called NAMELESS

5. Nameless is a planetary mass Nameless has hot lava. Nameless allows gases to escape. Nameless is… VOLCANO

6. N ameless is… VOLCANO

7. Nameless attributed to either earthquakes Nameless is generated when the sea floor abruptly deforms Nameless is displacement of a substantial volume of water Nameless is… TSUNAMI

8. Nameless is… TSUNAMI

9. Nameless has frequency and intensity Nameless is a result of volcanic activity Nameless is… EARTHQUAKE

10. Nameless is… EARTHQUAKE

11. What’s In?

12. What IS IT?

13. What IS IT?

14. There are a dozen large lithospheric plates (smaller plates not shown). Some plates have continents; some don’t. All are in motion. Question: What evidence is there for these plate boundaries? Tectonic Plates

15. There are thousands of small earthquakes every day “Strong” earthquakes occur once a month. Earthquakes Where are the deepest earthquakes? For earthquakes of the past 2 weeks, go to http://www.iris.edu/seismon/

16. Notice that the earthquakes coincide with plate boundaries, and the deepest quakes (blue) are in subduction zones. Question: Where would you expect to see volcanoes? Modified from USGS Graphics Earthquakes & Plate Boundaries Create your own maps at http://www.iris.edu/quakes/maps.htm

17. Modified from USGS Graphics This map shows that locations of volcanoes (ones above sea level) also tend to occur along the plate boundaries Volcanoes & Plate Boundaries

18. How fast are the plates moving? Plates move 1-10 centimeters per year (≈ rate of fingernail growth ). Tectonic Plates Modified from USGS Graphics Fingernail growth plotted: http://jclahr.com/science/earth_science/thumbnail/index.html

19. What’s MORE? _____ _____ _____ 4. _____ 5. _____ 6._____ 7._____ 8._____ 9. _____ DIRECTIONS: Read and analyze the situation on Page 10 of your module (Quarter1, Module 3). Write your answers on the spaces provided below:

20. What’s I have learned? Fill in each blank with the correct word found in the parenthesis.   A) As continental plate converges with an oceanic plate, the (1) __________ (continental, oceanic) plate dives under the (2)__________(continental, oceanic) plate. The process of diving down towards the mantle is called (3)____________(subduction, floatation). When the leading edge of the subducting plate reaches the mantle, it melts turning into (4)________(magma, crust) which builds up a pressure making it push the ground above it forming at the surface a (5) _________(volcano, mountain). .

21. What’s I have learned? Fill in each blank with the correct word found in the parenthesis. (6)_______(trench, fault) is formed along the boundary. Parallel to it, a series of volcanoes called (7)___________(volcanic island, volcanic island arc) may be formed. Simultaneous with the convergence, the ground may shake and so, we experience an earthquake. This shaking may disturb the water surface and may make the water flip upwards to a certain height. This event is called (8)____________(tsunami, wave). B) When two oceanic plates converge, the denser plate subducts. Once its leading edge reaches the mantle, it melts into a magma, builds up a pressure that makes it push the ground above it, forming a (9)___________(volcanic island, mountain). At the collision zone, a crack called (10)___________(trench, fault) is formed.

22. What’s I have learned? This depression could be the cause of the shaking of the ground which is felt as an (11)_____________(earthquake, storm). At the water surface, the overriding plate may push a big amount of water causing it to flip upwards forming a (12)____________ (tsunami, wave). C) The convergence between two continental plates results to a landform called(13)____________(volcanic arc, mountain ranges). Since both plates have the same densities, no plate subducts under the other. There is (14)_________________(no volcanic, volcanic) formation. However, since the ground moves, a phenomenon called (15)_______________(earthquake, storm) may be felt in nearby places.

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