Quiz Review Chapter 1 Flashcards
What are 3 causes of earthquakes?
- when molten rock moves under a volcano
- the buildup and release of energy when 2 surface plates move or shift against each other
- when large amounts of earth are moved or added
What are 3 types of faults?
- reverse
- normal
- strike-slip
The idea that the earth’s crust is made up of moving plates
theory of plate tectonics
Breaks in the earth’s surface along which rocks can move
faults
Beginning point of an earthquake
focus
Vibrations of energy that flow out from the beginning point of an earthquake
seismic waves
the point on the surface of the earth directly above the focus
epicenter
A machine that detects, times, and measures the movement of the earth
seismograph
The strength of the seismic waves of an earthquake
magnitude
measures the magnitude of an earthquake’s seismic waves and assigns it a number
Richter scale
The crust of the earth is made up of large pieces known as _____
plates
______ are breaks in the earth’s surface
faults
An earthquake in the ocean may cause the formation of a large wave called a _____
tsunami
The lithosphere contains _____
magma chambers
A composite cone volcano has ___ sloping sides
steeply