Weathering and Erosion Concepts

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Questions and Answers

What is the definition of weathering?

  • A force that destroys the land
  • A force that builds up the land
  • The moving of soil and rock
  • The breaking down of rocks and other materials on the Earth's surface (correct)

What does erosion refer to?

  • The process by which weathered rock and soil are moved from one place to another (correct)
  • The breaking down of rocks
  • A force that builds up land
  • The depositing of weathered material

What is deposition?

The depositing of weathered material.

What is mechanical weathering?

<p>The breakdown of rock into smaller pieces by physical means.</p> Signup and view all the answers

What is chemical weathering?

<p>The process that breaks down rock through chemical changes.</p> Signup and view all the answers

What is a constructive force?

<p>A force that builds up the land.</p> Signup and view all the answers

What is a destructive force?

<p>A force that destroys the land.</p> Signup and view all the answers

What is topography?

<p>Two-dimensional maps that can be used to show three-dimensional features.</p> Signup and view all the answers

What are contour lines?

<p>Lines that connect points of equal elevations.</p> Signup and view all the answers

What is an interval in the context of contour lines?

<p>The break between contour lines.</p> Signup and view all the answers

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Study Notes

Weathering

  • Breaking down of rocks and materials on Earth's surface.

Erosion

  • Movement of weathered rock and soil from one location to another.

Deposition

  • Process of depositing weathered materials.

Mechanical Weathering

  • Physical breakdown of rocks into smaller fragments.
  • Includes frost wedging (freeze & thaw), thermal expansion (heat & cool), biological actions (e.g., bugs), and abrasion (sand).

Chemical Weathering

  • Breaks down rocks through chemical reactions.
  • Examples include biological effects from plants, dissolution from acid rain, and oxidation leading to rusting.

Constructive Force

  • Forces that contribute to land formation and building up surface features.

Destructive Force

  • Forces that lead to the destruction and erosion of the land.

Topography

  • Two-dimensional maps illustrating three-dimensional features and landforms.

Contour Line

  • Lines on a map that connect points of equal elevation, helping to illustrate the landscape's shape.

Interval

  • The space or break between contours on a topographic map, indicating elevation differences.

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