Seismic Hazards and Magnitude (AQA A-Level Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the epicentre of an earthquake?
What is the epicentre of an earthquake?
Point on surface directly above the focus
What percentage of global earthquake energy is released by shallow focus earthquakes?
What percentage of global earthquake energy is released by shallow focus earthquakes?
75%
On the moment magnitude scale, how much more energy does a magnitude 7 release than magnitude 6?
On the moment magnitude scale, how much more energy does a magnitude 7 release than magnitude 6?
32 times more energy
How does magnitude differ from intensity when measuring earthquakes?
How does magnitude differ from intensity when measuring earthquakes?
Magnitude is single value; intensity varies
What does the Mercalli scale measure?
What does the Mercalli scale measure?
Intensity & observable impacts on location
Which of these is a primary effect of an earthquake?
Which of these is a primary effect of an earthquake?
Ground shaking
What causes most earthquake deaths?
What causes most earthquake deaths?
Secondary effects like building collapse
What is soil liquefaction?
What is soil liquefaction?
High water soils lose strength & act fluid
Where do the overwhelming majority of earthquakes occur?
Where do the overwhelming majority of earthquakes occur?
Along plate boundaries
Which factor does NOT affect the severity of ground shaking?
Which factor does NOT affect the severity of ground shaking?
The age of the earthquake fault