Tectonics Edexcel A-Level

What is a hazard?

• A potential threat to human life and property

• A major natural event

• A nautral event that leads to disaster

• A geological formation

What is a hotspot volcano ?

• A volcano occurring where there is subduction

• A place where two tectonic plates collide

• A volcano typically found in oceans

• A volcano or series of volcanoes that occur away from plate boundaries, e.g Hawaii.

What evidence supports the idea that continents were once connected and have since drifted apart?

• Fossils

• Ocean trenches

• Earthquakes

• Volcanoes

What is the result of the pressure build-up between two continental plates moving together?

• Formation of island arcs

• Formation of a deep ocean trench

• Formation of fold mountains

• Formation of sea floor spreading

In a conservative plate boundary, how do the parallel plates move?

• In the same direction at the same speed

• In different directions or at different speeds

• Vertically

• They do not move

What does the risk equation determine?

• The frequency of hazard events

• The likelihood of humans being affected by a hazard

• The economic impact of a hazard

• The environmental impact of a hazard

What does the Moment Magnitude Scale use to calculate the magnitude of an earthquake?

• The amount of energy released and the type of eruption

• The arrival times of the primary and secondary waves

• The energy released and the movement produced by shockwaves

• The damage produced

Which scale takes into account the damage produced by an earthquake?

• Richter Scale

• Moment Magnitude Scale

• Mercalli Scale

• Volcanic Explosivity Index (VEI)

What does the Volcanic Explosivity Index (VEI) measure?

• The amount of lava produced by a volcano

• The magnitude of an earthquake

• The height and volume of the eruption

• The frequency of volcanic eruptions

What is difficult to predict due to their occurrence without warning?

• Floods

• Earthquakes

• Volcanic eruptions

• Tsunamis