Shake it up!
*Vibrations of energy that flow out from the beginning point of an earthquake.
What are seismic waves?
*Breaks in the Earth's surface along which rocks can move
What is a fault?
The earth's plates move on top of a partially melted ___
What is the mantle?
*What are three causes of earthquakes
What is when molten rock moves under a volcano, the buildup and release of energy when two surface plates move or shift against each other, and when large amounts of earth are removed or added.
*The point on the surface of the Earth directly above the focus.
What is the epicenter?
The continent-sized sections of the crust and upper mantle.
What is a plate?
*What is a Thrust or Reverse fault?
What is when rocks push together until they force a section of rock upward.
*The strength of the seismic waves of an earthquake.
What is the magnitude?
*A machine that detects, times, and measures the movements of the earth.
What is a seismograph?
*What is a normal fault?
What is when rocks move apart a section of rock may fall between the separating rocks.
*The beginning point of an earthquake.
What is Focus?
*The underground point where an earthquake first starts, the beginning point of an earthquake.
What is the focus?
The volcano that erupted in 1980 in Washington State
What is Mount St. Helens?
*What is a Strike-slip fault?
What is when rocks move horizontally past each other.
The layer of the earth that contains all the land and ocean floor.
What is the crust?
The hottest layer of the earth.
What is the inner core?
*What is the name of the theory that Earth's crust is made up of moving parts
What is the theory of plate tectonics?