Earthquake I Crossword Puzzle

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EARTHQUAKE : This involves violent shaking of Earth’s surface, which is caused by a sudden displacement of subsurface rock masses.
PLATE BOUNDARIES : These are where one plate grinds against another plate & are where most earthquakes occur in the world.
SEISMIC WAVES : These cause shaking of the ground, & they originate where a fracture & sudden shift in rock occurs.
AFTERSHOCKS : These are a series of less-powerful earthquakes that follow the main quake, and my continue for days.
FOCUS : This is the point within Earth’s surface where rock fractures, which results in an earthquake.
EPICENTER : This is the point on Earth’s surface that is directly above the focus.
FOCAL DEPTH : This is the distance between the focus and the epicenter.
COMPRESSION : This shock wave travels out from the focus by compressing & expanding the ground it travels through.
PRIMARY : This is another term for a compression wave; it is also called a p-wave.
SHEAR : This shock wave travels out from the focus more slowly than a compression wave & in a side-to-side motion.
SECONDARY : This is another term for a shear wave; it is also called an s-wave.
SURFACE : This shock wave travels out from the focus like ripples through calm water; it is responsible for the damage-causing ground shaking of an earthquake.
SUBSIDENCE : This can create earth tremors when deep pockets of groundwater are removed.

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QUESTIONS LIST:

earthquake : this involves violent shaking of earth’s surface, which is caused by a sudden displacement of subsurface rock masses.
plate boundaries : these are where one plate grinds against another plate & are where most earthquakes occur in the world.
seismic waves : these cause shaking of the ground, & they originate where a fracture & sudden shift in rock occurs.
aftershocks : these are a series of less-powerful earthquakes that follow the main quake, and my continue for days.
focus : this is the point within earth’s surface where rock fractures, which results in an earthquake.
epicenter : this is the point on earth’s surface that is directly above the focus.
focal depth : this is the distance between the focus and the epicenter.
compression : this shock wave travels out from the focus by compressing & expanding the ground it travels through.
primary : this is another term for a compression wave; it is also called a p-wave.
shear : this shock wave travels out from the focus more slowly than a compression wave & in a side-to-side motion.
secondary : this is another term for a shear wave; it is also called an s-wave.
surface : this shock wave travels out from the focus like ripples through calm water; it is responsible for the damage-causing ground shaking of an earthquake.
subsidence : this can create earth tremors when deep pockets of groundwater are removed.