Active volcanoes, earthquake epicenters, and major mountain belts are mostly found along plate boundaries. As the plates move, geological events occur where the plates meet. Most volcanoes are located along boundaries like the Ring of Fire in the Pacific Ocean. Earthquake epicenters are also commonly found near plate boundaries where tectonic plates collide, diverge, or move past each other. Likewise, major mountain ranges tend to form at plate boundaries due to compression as the plates converge. The distribution of these geological features relates to plate tectonic theory, which explains that their formation is caused by the movement and interactions of tectonic plates.

1. QUARTE
R 1
MODULE
3
Grade 10-Earth and Space
mclaquindanum2020

2. ◦ Copyright Disclaimer under section 107 of the Copyright Act 1976, allowance is made
for “fair use” for purposes such as criticism, comment, news reporting, teaching,
scholarship,
education and research.
◦ Fair use is a use permitted by copyright statute that might otherwise be infringing.
◦ Non-profit, educational or personal use tips the balance in favor of fair use.
◦ This video is for teaching
purposes only.

3. Distribution
of
ACTIVE
VOLCANOES
EARTHQUAK
E
EPICENTER
MAJOR
MOUNTAIN
BELTS
Topi
c:

4. Learning
Objectives
Describe the distribution of active
volcanoes, earthquake epicenters and
major mountain belts and determine
the scientific basis for dividing the
lithospheric plates.

5. Guide
Question
◦ Why is there a volcano?
◦ What causes volcanic
eruption?
◦ How are volcanoes formed?
◦ What is an active volcano?

6. Why is there volcanoes? Why do
they erupt?
◦ Volcanoes are just way that the Earth and other planets
have of cooling off and releasing internal heat and pressure.

7. Why is there volcanoes? Why do they
erupt?
◦ The lower density of the magma relative to the surrounding
rocks causes it to rise (like air bubbles in syrup). It will rise to
the surface or to a depth that is determined by the density of
the magma and the weight of the rocks above it. As a magma
rises, bubbles start to form the gas dissolved in the magma.
◦

8. How are volcanoes
formed?

9. What is an active
volcano?
◦ An active volcano is a volcano that had at least one eruption during the past
10,000 years. An active volcano might be interrupting or dormant. An
erupting volcano is an active volcano that is having an eruption. A
dormant volcano is an active volcano that is not erupting, but supposed
to erupt again.

10. Describe the distribution of active
volcanoes
◦ The distribution of volcanoes in Geography means where are volcanoes
located around the world.

11. Describe the distribution of active
volcano
Image courtesy of the Smithsonian Institution's Global Volcanism Program (http://www.volcano.si.edu/world/find_regions.cfm.)

12. Describe the distribution of active
volcanoes

13. Guide
Questions
◦ Why is there an
earthquake?
◦ What is an
earthquake
epicenter?

14. Earthquake
Epicenter
or
focus

15. Why is there an
earthquake?

16. Why is there is an earthquake?
◦ Earthquake is sudden and violent shaking of the ground, sometimes
causing great destruction, as a result of movements within the earth’s
crust or volcanic action.

17. Worldwide Earthquakes & Volcanoes 1960-
2007

18. How are earthquake epicenter distributed around the
world?

19. What is mountain belt?
◦ How are mountain belts formed and
distributed around the world?

20. What is mountain belt?
Sierra Madre Mountain
Range

21. How are mountain belts
formed?

22. How are mountain belts formed and
distributed around the world?

23. Describe and relate the distribution of
active volcanoes, earthquake epicenters
and major mountain belts to Plate
tectonic theory.
◦ The distribution of active volcanoes, earthquake
epicenter, and major mountain belts are mostly found
along the plate boundaries. Since the plates are
moving slowly, geologic events happen along their
boundary, that is why most active volcanoes ,
earthquake epicenter, and major mountain belts are
mostly found plate boundaries.

24. What is Plate Tectonic
Theory?

25. Referenc
es
◦ https://www.youtube.com/watch?v=kwB68hK_s5
◦ https://www.youtube.com/watch?v=hos7w8xr
◦ https://www.nationalgeographic.org/media/plate-tectonics/
◦ https://www.google.com/search?
q=distribution+of+active+volcano&source=lnms&tbm=isch&sa=X&ved=2ahUKEwjNqcXSlrrsAhUIqp
QKHX7r DzkQ_AUoAXoECBkQAw&biw=1707&bih=710#imgrc=XaGoD0y8vyAHMM
◦ https://www.phivolcs.dost.gov.ph/index.php/volcano-hazard/volcanoes-of-the-philippines

26. ◦ Thank You
for your
attention!!!