A volcano is caused by a rupture in the crust from which molten magma
escapes
The correct options are;
- B. Two continental plates
- C. Volcanoes
- C. A tsunami in the ocean
- C. The temperature in the mantle is higher than in the crust
- A. Volcanic island arcs
- A. Earthquake
- B. Trench
- C. Subduction
- A. Fault
- C Tsunami
- A. Convergent plate boundary
- See attached drawing (<em>Based on Department of Education Science Module)</em>
- D. a, b and c
- C. Converging oceanic plates
- It is where the oceanic plates subduct under the continental plate
Reasons:
1. Due to the equal densities and buoyancy of the plates, there is no
subduction and the plates rise to form mountain ranges and no volcanoes.
2. The subduction causes the plates to form magma and then volcanoes.
3. Shallow earthquakes that have their epicenter at the fault line in the
ocean generate a tsunami.
4. The mantle lay under each plate and therefore, the high temperatures
of the mantle does not support the fact.
5. Volcanic arcs are formed in the convergence of two oceanic or oceanic
and continental plates.
6. When two continental plates converge, shallow earthquakes occur.
7. A crack called a trench is formed by the interaction of an oceanic crust
and another crust.
8. A subduction occurs when oceanic plates converge.
9. A fault is produced by horizontal plate movement.
10. A Flip or kick upwards of water is known as a tsunami.
11. Subduction occurs during convergence of two plates such that a
subducted plate goes down beneath an overriding plate.
12. The illustration of seafloor spreading consists of two plates moving
away from each other.
<em>Question 12: Based on Department of Education Science Module</em>.
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13. Earthquake occur at places where the plates are moving (including
subducting).
14. Volcanic island arcs are formed by two oceanic plates.
15. At the location where the continents meet the seas, oceanic plates are
subducted under the continental plate, melted to magma in the mantle
from which volcano is formed.
Learn more about volcanoes here:
