Lesson 1_Science 10 -Q1W1_ Distribution of Volcanoes, Earthquake Epicenters, and Mountain Ranges

2. Plate Margin
location of
Earthquakes
Volcanoes Mountains
Distribution along
Circum-Pacific
Belt
Mid-Continental
Belt
Mid-Atlantic
Belt

3. Seismic waves - An energy waves form releases all of the pressure
that has built up.
Hypocenter - The point where the pressure has built.
- Commonly known as focus.
Epicenter - The point of origin of the earthquake and is thus, where
most of the energy are.
- The point directly above it, on the Earth’s surface
- The amount of energy released by an earthquake
Magnitude
- It is measured using a device called a seismograph or
seismometer.

5. Volcanic Belt
3 Major Belts in the world
1. Circum-Pacific Belt
2. Mid-Atlantic Belt
3. Mid- Continental Belt

6. Mid- Atlantic Ridge
 Most of the volcanoes in the
world are located along
divergent plate boundaries
 Part of the Mild-Atlantic Belt
located on the floor of the
Atlantic Ocean from Iceland
to Antarctica

7. Pacific Ring of Fire
 A large number of volcanoes are found in
the region of the Pacific Ocean in a belt
 Part of the Circum-Pacific Belt.
 This ring extends to the Andres of South
America, Central America, Mexico, the
Cascade Mountains of Western United
States, the Aleutian Islands, Kamchatka,
the Kuril Isles, Japan, the Philippines,
Indonesia, Celebes, Papua New Guinea,
the Solomon Islands, New Caledonia,
and New Zealand.

8. Mid- Continental Belt
 Volcanoes are also found in convergent plate boundaries
 This belt includes :
Volcanoes of Alpine, The Mediterranean Sea like Stromboli,
Vesuvius, and Etna; Volcanoes of the Aegean Sea, Mt. Ararat
(Turkey), Elburz, Hindukush, and the Himalayas

9. Earthquakes – commonly occur along plate boundaries
The Circum-Pacific Belt stretches:
 Alaska to Kuril, Japan, Mariana, and the Philippine trenches.
 Beyond this, its branches toward the Indonesian trench and toward the
Kermac-Tonga trench to the northwest of New Zealand.
 This is the area where the Pacific Ring of Fire is found, which has the
highest incidence of earthquakes.
 About 70% of the world’s earthquakes occur in this region.

10. – where the great mountain ranges are located.
Mountain range
 made up of a series of mountains that are close together an extend for
hundreds or thousands of kilometers (km).
 also concentrated in the Circum-Pacific Belt
Mid-Continental Belt
 a nearly continuous chain of mountains can also be traced from Morocco
in North Africa through Europe, across Turkey and Iran through the
Himalayas to Southeast Asia.

11. Mid-Continental Belt
 This belt extends further to include Tibet, the Pamirs, and the mountains
of Tien Shan.
Mid-Atlantic Ridge
 is a vast chain of underwater mountains on the floor of the Atlantic Ocean.
 It is an underwater chain of mountains 75 639 km long.
Himalayas – highest mountain peaks
 This mountain range makes up the large uplifted area that extends for
about 2400 km through Tibet and much of Central Asia.

12. -mountain range, were formed through the collision of two plates
that have the same density.
Himalayas
 Collisions – involving two continental plates often cause the
pair to fold in one direction
 Subduction – the process of collisions involving a continental
plate and an oceanic plate.
- this occurs when an oceanic plate goes under a continental plate.

13. 1. Give famous volcanoes in the Philippines, including the
locations, date erupted, magnitude, and damages.
2. Advance study on page11, Tectonic Activities along Plate
Boundaries