What are the three processes that shape the Earth's surface?
"Describe and explain how Earth’s surface is built up and torn down through the processes of physical and chemical weathering, erosion, and deposition."
Physical & chemical weathering break down rocks & other materials. Erosion moves the broken pieces away. Deposition occurs when the pieces are dropped in a new place.
The Effects of Earth's Forces
Physical Weathering: The breaking down of rocks and other materials into smaller pieces through physical forces such as freezing, thawing, and wind. Chemical Weathering: The breakdown of rocks and other materials through chemical reactions such as oxidation and acidification. Erosion: The process by which weathered material is moved from one place to another by water, wind, ice, or gravity.
Physical and chemical weathering can create new minerals in rocks, such as how iron and oxygen can combine to form hematite. Erosion is the main cause of the formation of shorelines, such as beaches, cliffs, and lagoons. Deposition can cause new landforms to form, such as deltas and levees.
Did you know?
Work together in pairs: What is the difference between physical weathering and chemical weathering?
How does physical weathering contribute to the process of erosion and deposition in shaping the Earth's landscape?
Work together in pairs: What are the three main ways that Earth's surface changes over time due to weathering, erosion, and deposition?
Brain break: Draw a slice of pizza dancing on a spaceship
Which of the following is an example of physical weathering?
- Oxidation of iron minerals
- Freezing and thawing of water in cracks
- Acid rain dissolving limestone
What is the process by which wind, water, ice, or gravity transports soil and sediment from one location to another?
Which of the following is an example of chemical weathering?
- Abrasion by wind-blown sand
- Roots breaking apart rocks
- Acid rain dissolving marble statues
What is the process by which sediments are dropped or settled onto a new location?
What type of rock formation can be created through erosion and deposition over long periods of time?