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15
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Which sequence correctly shows how sedimentary rocks are formed?
Heat-pressure-recrystallization
Weathering-erosion-deposition-compaction-cementation
Melting-cooling-solidification
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During deposition
They turn into crystals
They settle when energy decreases
They melt into liquid
what happens to sediments?
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Which process changes solid rock into sediments without moving them?
Weathering
Deposition
Erosion
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What increases the rate of compaction?
Less pressure
Lower temperature
More layers piling on top
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Which sedimentary rock forms from compacted clay?
Basalt
Shale
Granite
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Why do sedimentary rocks often contain fossils in good condition?
They form quickly from lava
They form slowly at low temperatures
They cool rapidly
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What evidence shows a rock formed from sediments?
Glassy texture
Interlocking crystals
Visible layers and grains
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15
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Which mineral commonly causes cementation?
Calcite or silica
Iron metal
Plastic or rubber
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Lithification includes which two processes?
Melting and cooling
Weathering and erosion
Compaction and cementation
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trap
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star
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gift
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banana
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What would happen if compaction did not occur?
Fossils would burn
Sediments would remain loose
Rock would melt
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baam
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fairy
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gift
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baam
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How does water help cementation?
It increases temperature
It carries dissolved minerals
It breaks minerals apart
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How does sediment size affect deposition?
Larger sediments settle first
All sediments settle together
Smaller sediments always settle first
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15
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Which environment is MOST suitable for thick sedimentary rock layers?
Mountain cores
Volcanic vents
River deltas and seabeds
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thief
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rocket
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fairy
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baam
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