Topic 1: Multiple Choice

Which of the following is NOT a primary hazard associated with volcanic eruptions?

• Lava flows

• Pyroclastic flows

• Earthquakes

• Ash fall

What type of volcano is characterised by steep slopes and explosive eruptions?

• Shield volcano

• Composite volcano

• Hotspot volcano

• Dome volcano

What is a plate margin?

• The point where all volcanoes occur.

• Where two tectonic plates meet.

• A convection current in the Earth’s mantle.

• The point where the crust and the mantle meet.

What is the name given to the scale used to measure the magnitude of earthquakes?

• Richter Scale

• Fujita scale

• Beaufort scale

• Mercalli scale

A subduction zone is associated with which type of plate margin?

• Convergent

• Divergent

• Conservative

• Collision

The Richter scale is a logarithmic scale, meaning that each whole number increase on the scale represents a (a)   increase in amplitude.

• 10-fold

• 100-fold

• 1000-fold

• 10,000-fold

What is the term for the location of the sudden release of energy in the Earth's crust that creates seismic waves?

• Epicentre

• Focus

• Mantle

• Geology

Which of the following is a natural cause of past climate change?

• Plate tectonics

• Solar activity (sunspots)

• Human activities

• Ocean currents

What type of plate boundary is characterised by plates scraping past each other horizontally?

• Convergent boundary

• Divergent boundary

• Conservative boundary

• Subduction boundary

Which of the following is NOT a factor that influences the severity of an earthquake?

• Depth of the earthquake

• Speed of the seismic waves

• Distance from the epicentre

• Geology