Earthquakes
Some scientists believe that the earth's _____________ ,the crust and upper area of the mantle, consists of large pieces of called _______
Lithosphere and plates.
___________ are breaks in the earth's surface along which rock can move.
Faults
a _____ ______ occurs when part of the mountain collapses and mud and rock fragments surge down the mountain.
debris flow
places where the plates meet are called _____ _____
plate boundaries
The idea that the earth's crust is made up of moving plates is called the
theory of plate tectonics.
Scientists believe that these volcanoes are formed from ___ _____, places where the pool of intensely hot magma rises toward the surface
hot spots
________ are scientists who study volcanoes
volcanologists
_________ are scientists who study the movement of the earth.
Seismologists
Four parts of the earth
Crust, mantle, inner and outer core
volcanoes produce______ ______ as magma and lava cools, the smoother the rock will be.
Igneous rocks
when the magma breaks the surface it is called _____
________________ is a machine to detect, time and measure the movements of the earth.
Seismograph
The point on the surface of the earth directly above the focus is called the
A ______ is a hot spring that periodically blows steam and hot water into the air.
geyser
pockets of molten rock is called ____ _____
magma chambers
____________ scale is what measure how severe an earthquake is
Richter
the ____ wave is the fastest moving body wave.
P
A hot spring that contains more mud than water is called a _______ ______
mud pot
classifying volcanoes are by how many shapes _____
3