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Chapter 1: Earthquakes and volcanoes
Test on Tuesday, August 23, 2011
31
Science
6th Grade
08/19/2011

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Cards

Term
The pacific ocean surrounds....
Definition
The ring of fire.
Term
What r the 3 kinds(shape)of volcanos?
Definition
Cinder cone, composite cone,& shield.
Term
What r the 3 words that describe how often volcanoes erupt?
Definition
Active, dormant,& extinct.
Term
What is Pangea?
Definition
The theory that the earth once was just one large land mass.
Term
What causes earthquakes?
Definition
Plates shifting.
Term
What r the body waves?
Definition
P and S.
Term
Earthquakes occur __________ the surface of the earth.
Definition
beneath
Term
Lithosphere
Definition
The crust and upper area of the mantle.
Term
Focus
Definition
Beginning point of an earthquake.
Term
Seismic waves
Definition
waves of energy sent out from the focus
Term
Epicenter
Definition
Point on surface which is directly above the focus.
Term
Magnitude
Definition
Strength
Term
Tsunami
Definition
Series of giant waves
Term
Volcanologist
Definition
Scientist who study volcanoes
Term
Active volcano
Definition
Volcano that has erupted in the past and is expected to erupt again.
Term
Lava
Definition
Magma that breaks through the earth's surface.
Term
Magma
Definition
Molten rock
Term
Crater
Definition
Bowl shape at top of main vent.
Term
Extinct volcano
Definition
Volcano that has not erupted and is not expected to erupt again.
Term
Hot spring
Definition
Heated water rising to the earth's surface
Term
Geyser
Definition
Hot spring that periodically blows steam and hot water into the air
Term
Mud pot
Definition
Hot spring that contains more mud than water
Term
Seismograph
Definition
Detects, times, and measures the movement of the earth.
Term
Cinder
Definition
Bits of ash and lava
Term
Pyroclastic flow
Definition
High-speed avalanche of very hot dust and gases
Term
Tephra
Definition
Mixture of cinder, ash, and rock from a volcano
Term
Vog
Definition
Volcanic fog
Term
Fault
Definition
Break in the earth's surface in which rocks can move.
Term
Theory of the plate tectonics
Definition
The idea that the earth's crust is made up of moving plates
Term
Richter scale
Definition
Measures magnitude of an earthquake
Term
How does one volcano have more than one kind of eruption?
Definition
1 eruption can change the conditions of the inside of a volcano so it can have a different kind of eruption.
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