powerpoint for science 10

1. WEEK 3 DAY 2 SEPT 6, 2022

2. MANTRA OF THE DAY
•I AM KIND
•I CAN MAKE A CHANGE
•I AM A GOOD FRIEND
•I AM UNIQUE
•I AM WILLING TO LEARN
•I AM BRAVE
•I AM WORTHY
•I AM A GOOD LISTENER

3. VOLCANOES,
EARTHQUAKES, AND
MOUNTAIN RANGES

4. MOST ESSENTIAL LEARNING COMPETENCY
•Describe and relate the
distribution of active volcanoes,
earthquake epicenters, and major
mountain belts to Plate Tectonic
Theory

5. CONTINUATION OF
REPORTING

6. LESSON 1: VOLCANOES,
EARTHQUAKES, AND MOUNTAIN
RANGES

7. JULY 27, 2022

9. JULY 16, 1990

10. MAGNITUDE 7.8
EPICENTER IN NUEVA ECIJA
A TOTAL OF 2,412 PEOPLE DEAD.

11. JUNE 15, 1991

13. WHY DO WE NEED TO
LEARN THESE THINGS?

14. HOW ARE THEY
DISTRIBUTED?

15. Figure 5. Map of earthquake distribution (Red, Green
and blue dots represent earthquake epicenters)

17. Figure 6. Map of Active Volcanoes (Red areas represent presence of
volcanoes)

19. GUIDE QUESTIONS:
• 1. The world’s earthquakes are not randomly distributed over the
Earth’s surface. They tend to be concentrated in narrow zones.
• 2. Some are located near the edges of the continents, some are in
midcontinent’s, while others are in oceans.
• 3. Answers may vary. Some of the possible answers are large part of
the Pacific Ocean, northernmost Asia, majority of Europe, eastern
portion of North and South America and western Africa.
• 4. It is important to identify areas which are prone to earthquakes so
that necessary precautions could be done if ever you’re living in
those places.

20. • 5. Volcanoes are not randomly distributed. Majority
of them are found along the edges of some
continents.
• 6. Majority are found along the edges of some
continents, particularly in the western coast of
North and South America, East, and Southeast Asia.
• 7. Answers may vary
• 8. Earthquake epicenters and volcanoes are both
situated at the same locations

21. • 9. Mountain ranges are found in places where
volcanoes and/or earthquake epicenters are also
located.
• 10. Geologic activities such as seismicity (occurrence
of earthquake),
• 11. volcanism and mountain formation are the basis of
scientists in
•12. dividing Earth’s lithosphere.

22. THEORY OF PLATE
TECTONICS

23. Earth: Compositional Layers

24. •outer part of Earth, consisting of the
crust and the upper mantle
•The term lithosphere is derived from
Greek and means “rock layer.”

27. Continental Drift: 750 years ago to present
Implications of Plate Tectonics
While ocean basins are created and destroyed continents are too light
to be subducted, so simply break apart and collide

28. •Convection (plates move in response to convection in mantle) ?
•Ridge push (plates pushed apart at divergent boundaries due to downward
sliding of plates from top of mid-ocean ridge) ?
•Slab pull (oceanic plates dragged down at convergent boundaries due to
increasing density as they cool) ?
•Or…combination of these ?
What Drives Plate Movement ?

29. CONVECTION CURRENTS
The force responsible for plate movement is __________.

30. EARTH QUAKES
•Earthquake is defined as the shaking
and trembling of the Earth’s crust
caused by a sudden release of energy.
It occurs when rocks along a certain
fault line suddenly move.

31. THANK YOU AND SEE
YOU NEXT TIME
FACEBOOK: EDITH
ARELLANO DELA CRUZ