Grade: 9
Quarter 3
INTERVENTION MODULE 1
Competency
Describe the different types of volcanoes.
Objective/s
At the end of the lesson, you should be able to describe the different types of volcanoes.
Key Points
Volcanoes come in different shapes and sizes, and each structure has a unique
history of eruption. A Volcano is a mountain where lava (hot, liquid rock) come
from a magma chamber under the ground. A volcano usually has a summit, a slope,
a base. Most of the volcanoes have a volcano crater at the top.
summit 3 Parts of a Volcano
slope
Summit – peak or highest point. At the
base summit, you have an opening called
vent. A vent may be a crater or caldera.
Crater - is a funnel-shaped
depression at the top of a
volcano formed as a result of
explosive eruptions.
Caldera – a volcanic crater that
formed when a part of the wall
of the crater collapses
following an explosive eruption
Slope – degree of slant; inclination
Base – lowest point of a volcano
The Different Types of Volcanoes
Volcanologists, or scientists that specialize in volcanoes and volcanic activities,
classify volcanoes according to their shape, size, and materials they release during
eruption. We have considered the three general volcanic types according to the
shape of their cones: namely: shield volcanoes, cinder cones, and composite cones.
1. Shield volcano - formed by accumulation of lava resulting in a low and broad,
slightly domed structure that resembles a warrior’s shield. It has less violent
eruption.
Skill Practice
Direction: Give two examples of each type of volcanoes.
Type of Volcano Name of Volcanoes
1. cinder
2. composite
3. shield
Intervention Test Items
Direction: Choose the letter of the best answer.
1. Which of the following parts of volcano is the lowest point of a volcano?
A. Summit B. Vent C. Slope D. Base
2. Which of the following parts of volcano is the peak or highest of a volcano?
A. Summit B. Vent C. Slope D. Base
3. A type of Volcano vent that formed when a part of the wall of the crater collapses
following an explosive eruption How is the reservoir of molten rocks called?
A. Crater B. Caldera C. Slope D. Base
4. A type of Volcano vent is a funnel-shaped depression at the top of a volcano formed as a
result of explosive eruptions.
A. Crater B. Caldera C. Slope D. Base
5. Which of the following analogies is incorrect?
A. composite: broad B. shield: low C. shield: high D. cinder: steep
6. Which of the following does not belong to the group?
A. Cinder B. Composite C. Dormant D. Shield
7. Which of the following volcanoes is considered as a composite volcano?
A. Taal Volcano B. Mayon Volcano C. Mt. Kilauea D. Mt. Mauna Loa
8. Which of the following statements is not true about composite volcano?
A. A composite volcano is tall.
B. A composite volcano is steep-sided.
C. An example of composite volcano is Mount Kilauea in Hawaii.
D. A composite volcano releases a mixture of volcanic ash and lava.
9. Dr. Pasco has been studying a volcano for a long time now. He listed the following
characteristics of the volcano below. Based on the characteristics given, what type of
volcano is the volcano Dr. Pasco is studying?
Characteristics: low compared to other volcanoes
its lava spreads through its side vents.
it has less violent eruption.
A. Cinder B. Composite C. Shield D. None of these
10. Dr. Carlos is studying how Mt. Mahuja, a nearby volcano, erupts. He noticed that in the
past 7 eruptions, this volcano released mostly volcanic ashes and always had violent
eruptions. What type of volcano is Mt. Mahuja?
A. Cinder B. Composite C. Shield D. None of these
