Science 6Q4 week 1 Day 2-Earthquake and volcanic eruptions.pptx
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1) The document discusses tectonic plates and how their movements create geological features and affect changes on Earth's surface, such as forming mountains and volcanoes. 2) Tectonic plates consist of continental and oceanic crust that moves over the asthenosphere, and their interactions at boundaries can cause earthquakes and volcanic eruptions. 3) As the plates shift position over millions of years, they can cause continents to collide and create mountain ranges or pull apart and form ocean basins through the processes described in the Continental Drift Theory.
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- 1. MARICEL B. SAMPAGA Teacher III
- 2. Forces That Affect Changes on the Earth’s Surface Earthquake and Volcanic Eruptions
- 3. Do you have an idea on how earth exist and formed? Planet Earth was formed 4.6 billion years ago from the same nebula cloud of gas and dust that formed the Sun and the other planets.
- 5. Do you know how mountains and volcanoes are formed? https://www.youtube.com/watch ?v=K7Oq9_DU1Mc https://www.youtube.com/watch ?v=Fd_XqYE2BWY
- 6. We are going to deepen our knowledge about by studying the different crustal plates and their movements..
- 8. A tectonic plate (also called lithospheric plate) is a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.
- 9. A fault is a break in the rocks that make up the Earth's crust, along which rocks on either side have moved past each other.
- 10. A trench is a long narrow channel that is cut into the ground .A natural trench may also be a deep hole on the bottom of the ocean
- 11. Continental plate: one of the large pieces of the surface of the earth that move separately.
- 12. An oceanic plate is a tectonic plate at the bottom of the oceans.
- 13. asthenosphere is the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur.
- 14. Lithosphere is the rigid outer part of the earth, consisting of the crust and upper mantle.
- 15. The continents of the earth and ocean floor are made up of very large pieces of rocks called plates. What are Continental Drift Theory?
- 16. Continental drift was a theory that explained how continents shift position on Earth's surface
- 17. Differentiate trench and a fault. What are the different kinds of crustal plates?
- 18. Group Work and Presentation: Name some causes of the movements of the earth’s crust.
- 20. Essay Test: Explain briefly the Continental Drift Theory ad explain how it affects the earth’s surface.