What is a natural hazard?
Natural Hazards

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Science
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A natural hazard is a natural event that has the potential to cause harm to people, property, and the environment.
2.
FLASHCARD QUESTION
Front
What is an earthquake?
Back
An earthquake is the shaking of the Earth's surface caused by the sudden release of energy in the Earth's lithosphere.
3.
FLASHCARD QUESTION
Front
What is the Richter scale?
Back
The Richter scale is a numerical scale used to measure the magnitude of an earthquake based on the amplitude of seismic waves.
4.
FLASHCARD QUESTION
Front
What are faults?
Back
Faults are breaks in the Earth's lithosphere where blocks of rock have moved past each other.
5.
FLASHCARD QUESTION
Front
What is the modified Mercalli scale?
Back
The modified Mercalli scale is a scale that uses observations to rate the intensity of shaking from an earthquake.
6.
FLASHCARD QUESTION
Front
What causes earthquakes?
Back
Earthquakes are caused by the movement of tectonic plates and the stress that builds up in the Earth's crust.
7.
FLASHCARD QUESTION
Front
What is a seismograph?
Back
A seismograph is an instrument that measures and records the vibrations caused by seismic waves during an earthquake.
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