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39 Cards in this Set
- Front
- Back
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The continental crust is the deepest beneath?
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Mountains
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Oceanic crust is?
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Thicker and more dense tan continental crust
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About 80% of the Earth volume is made up of ?
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Mantle
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Earths inner core is?
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Hot and Liquid
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Earth's lithosphere is composed of?
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The crust and the upper portion of the mantle
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A geologic feature of divergent plate boundaries in oceanic crust is called a zone of?
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Rift valleys
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A divergent boundary occurs where 2 plates?
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Move toward each other
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1 hypothesis states that plate movement results form convection current is the?
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Asthenosphere
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A transform fault boundary occurs where two plates?
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Move past each other
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The reversal of Earths's magnetic poles as indicated by the rock on the ocean floor occurs on a average of every?
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200,000 years
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Earthquakes occur mostly?
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At the plate boundaries
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The breakage of rocks along the fault line releases energy in the form of?
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Seismic waves
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Which of the following i not a characteristic of a S wave?
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Travels through solids & liquid
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Waves that cause the most damage during an earthquake ?
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Surface waves
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A seismograph measure?
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How much the surface of Earth moves during an earthquake
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The minimum number of seismograph stations necessary to determine the location of an earthquake?
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Three
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Scientists can calculate the distance form the seismograph station to the focus using?
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The difference in arrival times of P and S waves
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The magnetic of the earthquakes is expressed using?
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The richer scale
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The magma of released form volcanoes is?
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Molten rocks form the mantel and crust
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The magma of shield volcanoes is rich in?
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Magnesium and Iron
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A cider cone volcano is caused by?
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Large amounts of gas trapped on the magma
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Composite volcanoes are made up of?
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Many layers of lava rich in magnesium & Iron
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Which of the following is not among the 9 most common rock forming minerals?
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Gold*
Silver |
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Which is not a rock type?
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Marble
Diamond * |
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Which of the following is not a rock type?
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Cubic
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Ingenious rocks forms from ?
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Magma
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SEDIMENTARY rocks are the only rocks that can be easily seen with the unaided eye formed?
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Extrusively
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Igneous rocks are named according to?
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the size and fragments they contain
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LIMESTONE can be metamorphosed into?
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Slate
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Which type of rock is formed from weathering?
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Metamorphic rocks
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Rocks that are changed by heat and pressure will form?
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Metamorphic rocks
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The principle of superposition is used to?
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Determine the relative age of rocks
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Radioactive isotopes are used to?
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Determine the absolute age of rockS
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Weathering that dose NOT alter the chemical composition of the rock is called?
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Physical weathering
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The most effective agent of physical weathering and erosion is?
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Water*
Wind |
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The process in which sediment is laid down is called?
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Deposition
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Carbonic acid dissolved in water as?
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Chemical weathering agent
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Underground limestone caves from?
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Oxidation decomposes the minerals in the rock
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Rain is naturally?
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Slightly acidic
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