459458228-VOLCANO-PPT-GRADE-9.pptx grade

volcanoes

1. VOLCANOES GRADE 9

2. Identify the pictures below and answer the following questions:

3. Identify the pictures below and answer the following questions:

4. Guide questions: a. Have you been in these places before ?

5. Guide questions: a. Have you been in these places before? b. In what particular place in the Philippines can we find these ?

6. Guide questions: a. Have you been in these places before? b. In what particular place in the Philippines can we find these? b. What are common in the pictures presented ?

7. What is a volcano?

8. What is a volcano? A  volcano  is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface.

9. Big QUESTION:

10. Big QUESTION: Why does Philippines have many volcanoes?

11. Philippine Institute of Volcanology and Seismology - It is the Philippine National Institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis.

12. Where and how are volcanoes formed?

13. Where do volcanoes usually form?

14. Where do volcanoes usually form?

15. Where do volcanoes usually form?

16. FORMATION OF VOLCANOES

17. DISSECTING A VOLCANO Activity:

18. Column A Column B 1. magma chamber Large underground pool of molten rock sitting underneath the Earth’s crust 2. Lava Silicate rock that is hot enough to be in liquid form, expelled from a volcano during eruption 3. Main vent It is the weak point in the earth’s crust where hot magma has been able to rise from the magma chamber and reach the surface 4. crater Steeped-wall depression at the peak of the volcano and the volcanic vent 5. ash cloud Consists of small pieces of pulverized rocks, minerals and volcanic glass created during volcanic eruption 6. magma Molten rock below the earth’s crust

19. PARTS OF A vOLCANO CRATER A  volcanic crater  is an approximately circular depression in the ground caused by  volcanic  activity. It is typically a bowl-shaped feature within which occurs a vent or vents.

20. PARTS OF A vOLCANO MAIN VENT A volcano's  main vent  is the weak point in the Earth's crust where hot magma has been able to rise from the magma chamber and reach the surface.

21. PARTS OF A vOLCANO

22. PARTS OF A vOLCANO MAGMA CHAMBER A  magma chamber  is a large pool of liquid rock beneath the surface of the Earth. The molten rock, or  magma , in such a  chamber  is under great pressure.