Measuring and Predicting Earthquakes (Grade 10 NSC Matric 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 a seismograph used for?
What is a seismograph used for?
To measure earthquake intensity & location
Why does the heavy weight in a seismograph stay still during an earthquake?
Why does the heavy weight in a seismograph stay still during an earthquake?
Due to inertia
Which type of earthquake wave is the most destructive?
Which type of earthquake wave is the most destructive?
L waves (Love waves)
In what order do earthquake waves arrive at a seismic station?
In what order do earthquake waves arrive at a seismic station?
P waves, then S waves, then L waves
What does 'logarithmic' mean on the Richter scale?
What does 'logarithmic' mean on the Richter scale?
Each number = 10 times more energy
How much stronger is a magnitude 5 earthquake than a magnitude 3 earthquake?
How much stronger is a magnitude 5 earthquake than a magnitude 3 earthquake?
100 times stronger
What effects occur at magnitude 4-4.9 on the Richter scale?
What effects occur at magnitude 4-4.9 on the Richter scale?
May break windows & small damage
What magnitude was the 2011 Tohoku earthquake in Japan?
What magnitude was the 2011 Tohoku earthquake in Japan?
9.0
Why is accurate earthquake prediction extremely difficult?
Why is accurate earthquake prediction extremely difficult?
Earthquakes occur deep underground
How many seismic stations are needed to pinpoint an earthquake's epicentre using triangulation?
How many seismic stations are needed to pinpoint an earthquake's epicentre using triangulation?
At least three