Volcanos and Earthquakes (OCR GCSE Geography A (Geographical Themes)): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What percentage of active volcanoes occur at tectonic plate boundaries?
What percentage of active volcanoes occur at tectonic plate boundaries?
60%
What is the name of the volcanic belt that encircles the Pacific Ocean?
What is the name of the volcanic belt that encircles the Pacific Ocean?
Ring of Fire
Where do volcanoes like those forming the Hawaiian Islands occur?
Where do volcanoes like those forming the Hawaiian Islands occur?
At hot spots in plate interiors
At which types of plate margins do volcanoes occur?
At which types of plate margins do volcanoes occur?
Destructive and Constructive
How does tension build at conservative plate margins to cause earthquakes?
How does tension build at conservative plate margins to cause earthquakes?
Plates sliding past each other get stuck
Why do earthquakes occur at destructive plate margins?
Why do earthquakes occur at destructive plate margins?
Subducted oceanic plate scrapes below
What does the Moment Magnitude Scale measure?
What does the Moment Magnitude Scale measure?
Energy released by an earthquake
How much more powerful is a magnitude 7 earthquake compared to a magnitude 6?
How much more powerful is a magnitude 7 earthquake compared to a magnitude 6?
10 times
What is the focus of an earthquake?
What is the focus of an earthquake?
Point in earth where earthquake starts
What is the epicentre of an earthquake?
What is the epicentre of an earthquake?
Point on surface directly above focus
What happens when an earthquake has a shallow focus?
What happens when an earthquake has a shallow focus?
Waves are stronger and cause more damage
What are primary effects of an earthquake?
What are primary effects of an earthquake?
Immediate impacts of ground shaking