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What is an earthquake?
A sudden release of energy in the Earth's crust that creates…
Where do most earthquakes occur?
Along plate boundaries, specifically where tectonic plates m…
What is the focus of an earthquake?
The point inside the Earth where the earthquake originates.
What is the epicenter?
The point on the Earth's surface directly above the focus.
What instrument measures earthquakes?
A seismograph.
What scale measures the magnitude of an earthquake?
The Richter scale or the Moment Magnitude Scale (MMS).
What scale measures earthquake intensity and damage?
The Mercalli scale.
What are seismic waves?
Vibrations that travel through the Earth carrying the energy…
Name the two main types of body waves.
Primary (P) waves and Secondary (S) waves.
What are the characteristics of P-waves?
Fastest waves, can travel through solids and liquids, compre…
What are the characteristics of S-waves?
Slower than P-waves, only travel through solids, shear waves…
What is liquefaction?
A process where saturated soil loses strength during shaking…
What is a tsunami?
A series of large ocean waves caused by underwater earthquak…
What is a fault?
A fracture or zone of fractures between two blocks of rock.
What is a tectonic plate?
A massive, irregularly shaped slab of solid rock that makes …