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42 Cards in this Set
- Front
- Back
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The idea that the earth's crust is made of moving plates is called what?
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plate tectonics
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The crust and upper area of the mantle that consists of large plates is called?
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Lithosphere
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Placs where the plates meet is named what?
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plate boundaries
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What are the 3 types of faults?
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thrust or reverse
normal strike -slip |
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describe the thrust or reverse fault.
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rocks push together until they force a section of rock upwards
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Rocks move apart, a section of rock may fall between the separating rocks describes which fault?
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normal fault
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Rocks move horizonally past each other is called what kind of fault?
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strike-slip
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Virbrations sent out from the beginning point of an earth is called ?
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seismic or earth waves
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A point on the surface of the earth directly above the focus is?
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epicenter
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Seismic waves BENNETH the earth's surface is called?
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body waves
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What are 2 types of body waves and describe them.
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P waves -fastest moving body wave; straight path
S waves-moves slowly; move up and down |
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When the P & S waves reach the SURFACE they are called what?
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Land waves
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L waves is the same as land waves true or false?
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True
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What are the slowest moving and most destructive waves?
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L waves
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Name two types of L waves and describe them!
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Love waves-fastest moving land waves, moves back and forth.
Rayleigh waves- moves along the ground in a rolling motion |
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What is the famous strike-slip fault located
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San Andeas Fault in California
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What does a Seismograph do?
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measures the time and measures the movement of the earth
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Richter scale measures what?
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the magnitude of the earthquake
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What is a Tsunamis
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Giant wave
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The earth crust float on a layer of semiliquid rock or magma (molten rock). is a theory called what?
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Theory of Plate Tectonics
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A crack in the earth's crust can cause magma and gases to surface. Name the steps to this cause of a volcano.
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1. Magma chambers exists as deep pockets of molten rock
2) Hot magma rises and pushes through the earth's crust 3. Lava hits the surface 4. Lava then comes out through vents. |
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What determines how much the volcano will explode?
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Minerals and gases
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What is the cloud from a volcano that is filled with jagged bits of crushed rocks?
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Ash
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Where are 2/3 of volcanoes found?
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Ring of Fire
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Where is the ring of fire?
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Mediterranean Sea
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Where do most volcanoes erupt?
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Under the ocean
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What are pools of intensely hot magma?
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Hot spots
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What is the name of the volcano that is more like a hill with a bowl like a crater, one vent, showers bits of ash and lava.
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Cinder cone shape
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Which volcano has sloping sides, look like upside down saucers. They are generally the largest in the world but not explosive!
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Shield
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What volcano has STEEP SIDES and very TALL, with explosive eruptions.
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composite cone
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What volcano that has erupted at some point and expected to erupt again.
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Active
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What volcano has erupted in distant past but is currently inactive, not expected to erupt again.
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Dormant
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What volcano does not have a recored eruption and not expected to erupt in the future.
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Extinct
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What are the effects and products of Volcanoes?
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Vog
Acid rain Debri |
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Volcanic fog that pollutes and aggrevates repiratory problems is called?
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Vog
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Where does acid rain come from?
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gases
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What is falling mud and rocks called?
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debri flow
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Is pumice, obsidian jewlery and granite for building a product of vulcanoes?
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Yes
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Define Hot spring
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the heat from magma warms water rises to the surface.
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What is a Geyser?
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Hot spring that periodically blows steam and hot water into the air
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A hot spring with more mud than water is what?
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Mud pot
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Be able to label 3 kinds of faults
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all three
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