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50 Cards in this Set
- Front
- Back
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Continental crust is made of
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silicone and aluminum
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oceanic crust is made of
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silicone and magnesium
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magnetic field is generated from
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the outer core
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three types of rock forming processes
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sedimentary, igneous, metamorphic
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sedimentary rock is formed by...
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skeletal remains, sediments that are laid down in the ocean.
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two types of sedimentary rock
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sandstone & limestone
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igneous rock is formed by...
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magma that cools
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types of igneous rock
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lava, pumice, granite
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metamorphic rock is formed by...
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heat and pressure changing the form of other rocks
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types of metamorphic rock
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marble, slate
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most abundant rock type in the crust
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igneous
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intrusive igneous rock...
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cools below the surface (granite)
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extrusive igneous rock...
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cools above the surface (lava)
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earthquakes are caused by
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tectonic movements
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earthquakes are recorded with a
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seismograph
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earthquakes intensity is measured by the _____ ______ ______
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logarithmic Richter scale
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The origin of an earthquake is it's
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focus
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the point above on the earth's surface of an earthquake is the
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epicenter
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3 types of waves in an earthquake
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primary-push & pull secondary-side to side
last is surface-all directions |
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Volcanoes are found in these tectonic areas
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convergent, divergent and lateral
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three types of material that come out of volcanoes
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ash, lava and pyroclastics
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a shield volcano is more _____ than a composite volcano because it is less ______
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flat, viscous
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example of a shield volcano
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Mauna Loa
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example of a composite volcano
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mt. st. helen
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example of a cinder cone volcano
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sunset crater
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what was Pangaea
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"all earth" 225 million years ago when the continents were all connected
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plate tectonics are
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theory that explains earths crustal movements & tectonic activity.
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a hot spot is, and can be found
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when a moving plate is hit underneath by a stationary plume of magma creating a trail of islands. HAWAII
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magma is
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molten rock underground
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what causes hot springs
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magma & water underground
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divergent plate boundary is.... and an example of it
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plates moving apart--rift valley
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convergent plate boundary is... and an example
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plates moving together--himalayas
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Lateral plate boundary is... and an example
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lateral movements of plates w/ out volcanoes. San Andreas fault
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3 types of results when rocks break
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stretching, compressing, lateral shear
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stretching is _____ and causes
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normal, faults
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compressing is _______ and causes
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reverse, folds
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later shear is ______and causes
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strike/slip, twisting
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Horst is
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upfaulted block
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Graben is
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downfaulted block
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anticline is
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upward, creates a hill
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syncline is
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downward, creates a valley
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there can be an anticlinal _____
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valley
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there can be a synclinal _____
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hill
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there can be three types of anticlines
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normal anticline, asymmetrical or overturned.
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explosive lava is
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viscous, sticky
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effusive lava is
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less viscous/less sticky so spreads out more
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what determines the type of volcanic eruption
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it's origin and its viscosity
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the oldest rocks are found at
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the edge of the oceanic & continental crust
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convectional weather is caused by
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evaporation off of hot land and rising vertically into clouds
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orographic is
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air that becomes saturated as it goes over a mountain
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