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Questions and Answers
What process is responsible for the formation of sedimentary rocks?
What process is responsible for the formation of sedimentary rocks?
- Weathering and erosion (correct)
- High temperatures and pressures
- Volcanic activity
- Melting and cooling
What type of rock is formed when a pre-existing rock undergoes high temperatures and high pressures?
What type of rock is formed when a pre-existing rock undergoes high temperatures and high pressures?
- Metamorphic rock (correct)
- Igneous rock
- Extrusive rock
- Sedimentary rock
What determines the texture of an igneous rock?
What determines the texture of an igneous rock?
- The amount of pressure applied
- The location of formation
- The rate of cooling (correct)
- The type of minerals present
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Study Notes
Formation of Rocks
- Sedimentary rocks are formed through the process of sedimentation, where mineral and organic particles are compressed and cemented together.
- Metamorphic rocks are formed when a pre-existing rock undergoes high temperatures and high pressures, resulting in a change in its mineral composition and structure.
- The texture of an igneous rock is determined by the rate of cooling, with slow-cooling rocks forming coarse-grained textures and rapid-cooling rocks forming fine-grained textures.
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