Measuring and Predicting Earthquakes (Leaving Cert Geography): Quizzes
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12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the primary function of a seismograph?
What is the primary function of a seismograph?
Detect & record ground movements
Which type of seismic wave is the fastest-moving?
Which type of seismic wave is the fastest-moving?
Primary waves (P-waves)
Which seismic waves cause most of the damage during earthquakes?
Which seismic waves cause most of the damage during earthquakes?
Surface waves
On the Richter scale, what does each whole number increase represent?
On the Richter scale, what does each whole number increase represent?
Tenfold increase in energy released
What is the highest magnitude ever recorded on the Richter scale?
What is the highest magnitude ever recorded on the Richter scale?
9.5 (Chile, 1960)
Why do seismologists prefer the moment magnitude scale (MMS) over the Richter scale?
Why do seismologists prefer the moment magnitude scale (MMS) over the Richter scale?
It provides more accurate measurements
What does the Modified Mercalli scale measure?
What does the Modified Mercalli scale measure?
Observed damage & effects
What is the main challenge in earthquake prediction?
What is the main challenge in earthquake prediction?
Large number of variables involved
Can animals actually predict earthquakes days or weeks in advance?
Can animals actually predict earthquakes days or weeks in advance?
No, they respond to P-waves only
Which method is considered the most reliable for earthquake prediction?
Which method is considered the most reliable for earthquake prediction?
Measuring rock stress
What do strainmeters measure?
What do strainmeters measure?
Stress build-up at fault lines
What can current prediction methods identify reliably?
What can current prediction methods identify reliably?
Where earthquakes are likely to occur