Lesson 18 - Destructive Forces - Canyons, Valleys, and Glaciers
Introduction
The processes for wearing away land are called destructive forces. Today, we will learn about canyons and valleys that are carved by water or glaciers. These large scars on the Earth’s crust can be spectacular. They are impressive landforms caused by destructive forces.
Canyons, Valleys, and Glaciers
In your Science Journal:
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- Write down today’s Lesson Title at the top of your next Journal page.
- Write today’s learning objective on the first line.
- Explore the Module 6 - Lesson 18 presentation below. Canyons form over millions of years. Canyons are created by erosion. In the case of canyons, a river is what most often causes erosion. A valley is a lower part in the land, between two higher parts which might be hills or mountains. A valley is made deeper by a stream of water or a river as it flows from the high land to the lower land, and into a lake or sea. Glaciers are very important. They have a large effect on the environment. They do this because they are very large and heavy. When they move, they erode mountains and land.
- Write down the important terms and their definitions and important diagrams (yellow boxes) in your Science Journal.
Video
Check out this video that explains the power of water in shaping the Earth!
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