Geology Chapter 6: The Rock Cycle
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Geology Chapter 6: The Rock Cycle

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Questions and Answers

This process causes rock to break down into smaller pieces called sediment: ________________.

Weathering

Name the 3 types of rock.

Sedimentary, Igneous, and Metamorphic

This action is the movement of sediments to rivers and lakes: ______________.

Erosion

This is the accumulation of sediment in lakes, oceans, or on floodplains: __________.

<p>Deposition</p> Signup and view all the answers

Sedimentary rock is formed by _______________ and ______________.

<p>Weathering, Erosion</p> Signup and view all the answers

Two types of igneous rock are ____________ and ____________.

<p>Extrusive, Intrusive</p> Signup and view all the answers

What causes sedimentary and igneous rock to become metamorphic rock? ____________ and ____________.

<p>Heat, Pressure</p> Signup and view all the answers

Intrusive igneous rock forms __________________________________________________.

<p>when magma is trapped deep inside the Earth and cools slowly.</p> Signup and view all the answers

Extrusive igneous rock forms __________________________________________________.

<p>when magma exits and cools quickly either outside or very near the Earth's surface.</p> Signup and view all the answers

Can any rock become a sedimentary rock?

<p>True</p> Signup and view all the answers

How can any rock become a sedimentary rock?

<p>By undergoing weathering, erosion, deposition, compaction, and cementation.</p> Signup and view all the answers

Study Notes

Rock Basics

  • Rock is a natural solid composed of one or more minerals and organic matter.
  • Rock Cycle describes the continuous transformation of rock types: sedimentary, igneous, and metamorphic.

Sedimentary Rock

  • Formed through weathering and erosion, deposition, compaction, and cementation.
  • Sediment consists of broken rock and mineral fragments resulting from weathering.
  • Any type of rock can eventually become sedimentary if exposed at the Earth's surface.
  • Fossils are typically found within sedimentary rocks.

Weathering and Erosion

  • Weathering refers to the breakdown of rock caused by natural forces like water and temperature changes.
  • Erosion is the movement of sediment by wind and water.

Deposition, Compaction, and Cementation

  • Deposition is the accumulation of sediment in layered formations.
  • Compaction squeezes sediment layers together due to the weight of overlying materials.
  • Cementation binds sediment into solid rock.

Examples of Sedimentary Rocks

  • Breccia: Contains angular fragments.
  • Shale: Composed of fine particles, often layers.
  • Sandstone: Made of sand-sized particles.

Igneous Rock

  • Igneous rocks form from the cooling and solidification of hot molten rock (magma).
  • Extrusive igneous rock forms near or at the Earth's surface during volcanic eruptions and cools quickly; examples include pumice and obsidian.
  • Intrusive igneous rock forms from magma that cools slowly beneath the Earth's surface, resulting in rocks like granite.

Black Sand Beach

  • Punalu'u beach in Hawaii features black sand created from lava that cooled rapidly in the ocean, breaking into sand-sized particles.

Metamorphic Rock

  • Formed from sedimentary or igneous rocks that undergo change due to heat and pressure.
  • Examples include slate (from shale) and marble (from limestone).

Key Processes and Concepts

  • The rock cycle illustrates how rocks transform from one type to another through natural processes.
  • Intrusive igneous rocks often rise to the surface due to plate tectonics and uplift forces.
  • Heat and pressure are primary agents that transform sedimentary and igneous rocks into metamorphic rocks.
  • Any rock type can ultimately become sedimentary through weathering and accumulation processes.

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Rock-Cycle-PPT-19-20.ppt

Description

Explore the fascinating world of the rock cycle in this quiz covering Chapter 6. Learn about the three types of rocks: sedimentary, metamorphic, and igneous, and the processes that shape them. Test your understanding of how rocks form and change over time!

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