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Students will complete a variety of activities that demonstrate how weathering and erosion change Earths surface.
Two forces, weathering and erosion, are constantly at work wearing away the rocks that make up Earth's crust. Weathering causes rocks to fragment, crack, crumble, or break down chemically. Erosion loosens and carries away the rock debris caused by weathering. Over time these two forces, working together, can change the shape of the land.
1-Use science process and thinking skills.
2-Manifest scientific attitudes and interests.
3-Understand science concepts and principles.
Invitation to Learn:
Brainstorm all the ways the surface of Earth can change. Take the list and put into three categories: weathering, erosions, and other. Discuss these findings and how long they take in each category. Using pictures, discuss that Earth's surface has gone through weathering and erosion.
All kinds of rocks weather, but not in the same way or at the same rate. It all depends on the mineral composition of the rock, as well as where the rock is located. Here is a closer look at the way rock weathers through the water erosion process.
Students will go on a Wear it Away Walk, by walking outside in the schoolyard and observing signs of erosion, weathering and deposition. Look for signs of erosion on hillsides. Look for loose rocks and soil at the bases of slopes. Observe any plant growth that slowed down erosion. Write down as many weathering and erosion observations as you can.
This lesson is part of the Fifth Grade Science Teacher Resource Book. The TRB3 is designed to be your textbook in teaching science curriculum to your students. This book covers all the objectives of each standard and benchmark. If taught efficiently, a student should do well on the End-of-Level (CRT) tests. The TRB3 is designed for teachers who know very little about science, as well as for teachers who have a broad understanding of science.