Year 8 Geography Revision Worksheet: Plate Tectonics, Earthquakes, and Volcanoes
Section A: Multiple Choice (7 Marks)
1. What is the theory that explains the movement of Earth's lithospheric plates called?
a) Continental drift
b) Seafloor spreading
c) Plate tectonics
d) Earthquake theory
2. Earthquakes occur primarily along:
a) Oceanic ridges
b) Transform boundaries
c) Convergent boundaries
d) Subduction zones
3. Which type of volcano is characterized by highly explosive eruptions with viscous magma?
a) Shield volcano
b) Cinder cone volcano
c) Composite volcano
d) Lava dome volcano
4. The point within the Earth where an earthquake originates is called:
a) Seismic focus
b) Epicenter
c) Seismograph
d) Richter scale
5. What is the process by which new oceanic crust is formed at mid-ocean ridges called?
a) Subduction
b) Convergent boundary
c) Seafloor spreading
d) Transform boundary
6. Which type of plate boundary is associated with the formation of mountains?
a) Convergent boundary
b) Divergent boundary
c) Transform boundary
d) Subduction zone
7. The magnitude of an earthquake is measured using:
a) Seismographs
b) Richter scale
c) Tsunami scale
d) Volcano scale
Section B: Definitions (5 Marks)
Match the following terms with their correct definitions:
1. Plate tectonics
2. Seismology
3. Richter scale
4. Lava
5. Fault
Definitions
a) The study of earthquakes and seismic waves.
b) A scale used to measure the magnitude of earthquakes.
c) Molten rock that erupts from a volcano.
d) The theory explaining the movement of Earth's lithospheric plates.
e) A fracture in Earth's crust along which movement has occurred.
Section C: Short Answer (10 Marks)
1. Explain the process of seafloor spreading and its role in plate tectonics. (3 marks)
2. Describe the difference between a shield volcano and a composite volcano. (3 marks)
3. How do earthquakes occur at transform boundaries? (2 marks)
4. Discuss the effects of volcanic eruptions on the environment and human settlements. (2 marks)
Section D: Drawing Diagram (10 Marks)
Draw and label a diagram illustrating the formation of a composite volcano. (5 marks)
Draw and label a diagram illustrating the process of subduction at a convergent boundary. (5
marks)
Total Marks: 32