Chemical Weathering Types
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Questions and Answers

What is the primary process by which chemical reactions occur with oxygen in chemical weathering?

  • Reduction
  • Hydration
  • Oxidation (correct)
  • Hydrolysis
  • What is the term used to describe acids that fall to Earth from the atmosphere?

  • Acid precipitation (correct)
  • Atmospheric acid
  • Acid rain
  • Groundwater acid
  • How do living organisms contribute to chemical weathering?

  • They produce strong acids that break down rocks
  • They create oxygen that reacts with rocks
  • They absorb acids from the atmosphere
  • They produce weak acids that weather the rock surface (correct)
  • What is the primary result of chemical reactions with oxygen in rocks?

    <p>A change in composition (D)</p> Signup and view all the answers

    What is the role of groundwater in chemical weathering?

    <p>It moves through rocks and causes chemical reactions (B)</p> Signup and view all the answers

    What is the term used to describe the breakdown of rocks by chemical reactions?

    <p>Chemical weathering (A)</p> Signup and view all the answers

    What is the common feature of all types of chemical weathering?

    <p>Reaction with acid (B)</p> Signup and view all the answers

    What is the process of moving sediments and other materials from one place to another?

    <p>Erosion (A)</p> Signup and view all the answers

    What is the name of the flat area formed by the deposition of many layers of sediments?

    <p>Floodplain (B)</p> Signup and view all the answers

    What is the name of the fan-shaped deposit that forms on dry land?

    <p>Alluvial fan (B)</p> Signup and view all the answers

    What is the term for the water located within the rocks below Earth's surface?

    <p>Groundwater (B)</p> Signup and view all the answers

    What are the two forces that shape a shoreline?

    <p>Waves and Currents (A)</p> Signup and view all the answers

    What is the term for the place where land and a body of water meet?

    <p>Shoreline (C)</p> Signup and view all the answers

    Study Notes

    Chemical Weathering

    • Chemical weathering is the breakdown of rocks by chemical reactions that change the composition and appearance of rocks.

    Types of Chemical Weathering

    • Chemical weathering occurs through four types of reactions: reaction with oxygen, reaction with acid precipitation, reaction with acids in groundwater, and reaction with acids in living things.

    Reaction with Oxygen

    • Oxygen reacts with compounds that make up rocks, causing chemical reactions.
    • This process is called oxidation.
    • A color change can indicate that a chemical reaction has taken place.

    Reaction with Acid Precipitation

    • Acids in the atmosphere are created when chemicals combine with water in the air.
    • When these acids fall to Earth, they are called acid precipitation.
    • Acid precipitation can cause chemical weathering.

    Reaction with Acids in Groundwater

    • Water in the ground, or groundwater, can cause chemical weathering.
    • As groundwater moves through spaces or cracks in rocks, acids in the water can cause rocks to dissolve.

    Reaction with Acids in Living Things

    • Acids are produced naturally by certain living organisms.
    • Some living organisms grow on rocks and produce weak acids that can weather the rock surface as they grow.

    Erosion and Deposition

    • Erosion is the process of moving sediments and materials from one place to another.
    • Deposition is the process of dropping eroded material.

    Streams and Landforms

    • Streams can create canyons and valleys through erosion, such as the Colorado River creating the Grand Canyon.
    • Floodplains are formed through deposition, where layers of sediments are deposited over flooded land, creating a flat area.
    • Deltas are fan-shaped deposits that form in water, while alluvial fans are fan-shaped deposits that form on dry land.
    • Both deltas and alluvial fans are formed through deposition.

    Groundwater

    • Groundwater is the water located within rocks below Earth's surface.
    • Groundwater can shape landforms through both erosion and deposition.

    Coastal Landforms

    • Shoreline is the place where land and a body of water meet.
    • Waves and currents are forces that shape a shoreline.
    • Coastal landforms can be formed through both erosion and deposition.
    • Examples of coastal landforms made by erosion include cliffs and arches.
    • Examples of coastal landforms made by deposition include beaches and spits.

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    Description

    Learn about the different types of chemical weathering, including reactions with oxygen, acid precipitation, and more. Understand the processes that change the composition and appearance of rocks.

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