Earthquakes I (Junior Cert Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What causes an earthquake?
What causes an earthquake?
Sudden shaking from tectonic plate movement
What is the focus of an earthquake?
What is the focus of an earthquake?
Point beneath Earth's surface where it starts
What is the epicentre of an earthquake?
What is the epicentre of an earthquake?
Point on surface directly above the focus
What are aftershocks?
What are aftershocks?
Smaller tremors following the main quake
What type of plate boundary is the San Andreas Fault?
What type of plate boundary is the San Andreas Fault?
Conservative (transform) boundary
What does a seismograph do?
What does a seismograph do?
Detects & records earthquake vibrations
On the Richter scale, how much more energy is released with each unit increase?
On the Richter scale, how much more energy is released with each unit increase?
About 32 times more energy
What is the Mercalli scale based on?
What is the Mercalli scale based on?
Eyewitness observations of damage
How high can tsunami waves reach as they approach shallow water?
How high can tsunami waves reach as they approach shallow water?
Up to 30 metres
What typically triggers a tsunami?
What typically triggers a tsunami?
Large, shallow underwater quakes w/ vertical