Gone With the Weathering: The Result — Erosion   Western Reserve Public Media
What's Left Behind: Redepositing Fast Weathering Slow Weathering Overview Resources Hotlists Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online Desert Photography Overview Slow Weathering Fast Weathering What's Left Behind: Redepositing Resources Hotlists Desert Photography Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online What's Left Behind: Redepositing Fast Weathering Slow Weathering Overview Resources Hotlists Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online Desert Photography Overview Slow Weathering Fast Weathering What's Left Behind: Redepositing Resources Hotlists Desert Photography Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online What's Left Behind: Redepositing Fast Weathering Our Desert Story Slow Weathering Overview Resources Hotlists Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online Desert Photography
Slow Weathering

The Desert: An Example of Weathering and Erosion

 

Overview

This lesson is an introduction to one example of weathering and erosion — the desert. Students will learn key definitions, vocabulary and facts. They then will work with a partner and conduct Internet research to find answers to a worksheet.

 

Standards Addressed

Current Standards

Grade 4

Earth and Space Science

3-5 Benchmark B. Summarize the processes that shape Earth’s surface and describe evidence of those processes.

Y2003.CSC.S01.G03-05.BB.L04.I08  Processes That Shape Earth /

08. Describe how wind, water and ice shape and reshape Earth’s land surface by eroding rock and soil in some areas and depositing them in other areas producing characteristic landforms (e.g., dunes, deltas and glacial moraines).

 

Y2003.CSC.S01.G03-05.BB.L04.I09  Processes That Shape Earth /

09. Identify and describe how freezing, thawing and plant growth reshape the land surface by causing the weathering of rock.

 

Y2003.CSC.S01.G03-05.BB.L04.I10  Processes That Shape Earth /

10. Describe evidence of changes on Earth’s surface in terms of slow processes (e.g., erosion, weathering, mountain building and deposition) and rapid processes (e.g., volcanic eruptions, earthquakes and landslides).

 

Common Core Standards

Strand: Earth and Space Science (ESS)

Topic: This topic focuses on the variety of processes that shape and reshape Earth’s surface.

  • Earth’s surface has specific characteristics and landforms that can be identified.

  • The surface of Earth changes due to weathering.

  • The surface of Earth changes due to erosion and deposition.

 

Procedure

  1. Ask the class if they know the difference between weathering and erosion. Answers will vary. After some discussion, share the definitions with the class. (Weathering is the gradual breaking down of rocks into smaller pieces caused by the action of weather conditions. Erosion is a process that transports rock, soil and sediment to different locations.)

  2. Show the PowerPoint presentation “The Desert: An Example of Weathering and Erosion.”

  3. Pass out the Desert Scavenger Hunt handout and instruct the class to turn it to the back and write the numbers one through five.

  4. Show the PowerPoint presentation “Which Is It: Weathering or Erosion?” Have the class write whether each of the five statements describes erosion or weathering.

 

Answers

“Which Is It: Weathering or Erosion?”

  1. Erosion — Weathering occurs before erosion takes place, so the river broke down the rock and created the canyon.

  2. Weathering — The rock was broken down but not moved from the site.

  3. Weathering — The acid rain has pitted the statue and has caused a chemical change in the rock.

  4. Weathering — The sediments from the walkway remain there.

  5. Erosion — Over millions of years wind has moved the sand sediments to form the desert.

Review the answers and ask if there are any questions.

 

Instruct the students to work with a partner on the Desert Scavenger Hunt handout.

Desert Scavenger Hunt

  1. 20 percent

  2. Less than 10 inches

  3. About 1 billion or one-sixth of the population of the world

  4. Sahara Desert

  5. Antarctic Desert and Gobi Desert

  6. Mohave Desert, Great Basin and Sonoran Desert

  7. Tropic of Cancer (23.5° N) and Tropic of Capricorn (23.5° S)

  8. Flash floods

  9. Food and water are difficult to get; temperatures are too hot or too cold

  10. Wind

 
pbs.org Copyright©2012, Northeastern Educational Television of Ohio, Inc. All rights reserved.
 
Overview Slow Weathering Fast Weathering What's Left Behind: Redepositing Resources Hotlists Desert Photography Teacher Materials Watch Gone With the Weathering: The Result -- Erosion Online Background: Weathering Background: Erosion Weathering and Erosion Vocabulary Desert Hotlist Hot Desert Animal Vocabulary Desert Animals PowerPoint Presentation: Desert Animals Desert Plants Plate Tectonics Earthquakes Volcanoes Tsunamis Floods Iceberg Sighting A Glacier of Our Own Landform Project: Breaking It Loose and Putting  It Together The Desert: An Example of Weathering and Erosion PowerPoint Presentation: What Do They Have  in Common? Iceberg Sighting — Observation Record: Day 1 Iceberg Sighting — Observation Record: Day 2 A Glacier of Our Own — Observation Record A Glacier of Our Own PowerPoint Planning Guide PowerPoint Presentation: Which Is It: Weathering or Erosion? Which Is It: Weathering or Erosion? PowerPoint Presentation: The Desert: An Example of Weathering and Erosion Desert Scavenger Hunt