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WorksheetsEarthquake
Total questions: 15
Worksheet time: 21mins
(a) is a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
(a) is the study of earthquakes and seismic waves that move through and around the earth.
The point within the earth where rock is under stress is called _________________________.
Focus
Epicenter
The point directly above the focus on the surface is called ___________________.
Epicenter
Hypocenter
(a) is a thin zone of crushed rock separating blocks of the earth's crust.
An instrument used to detect and record earthquakes is called (a) .
_______________is a measure of the “size,” or amplitude, of the seismic waves generated by an earthquake source and recorded by seismographs.
magnitude
intensity
_________________is a number (written as a Roman numeral) describing the severity of an earthquake in terms of its effects on the earth's surface and on humans and their structures.
magnitude
intensity
(a) is a measure of the strength of earthquakes, developed by Charles F. Richter and presented in his landmark 1935 paper, where he called it the "magnitude scale".
Which of the following is NOT a cause of an earthquake?
Collapse of Cavern
Eruption of Volcano
Lightning Strikes
Moving Tectonic Plates
What is a smaller earthquake that follows a larger earthquake?
(a)
What's the main cause of most earthquakes?
Pressure from within Earth's crust
Hurricanes
Human activity
Changes in temperature within the earth's mantle
Earthquakes most often occur
in the middle of plates
near plate boundaries
where thunderstorms are
along the coast
