today’s agenda…1/18 bellringer: how do weathering and erosion change the surface of the earth?...
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Erosion What is erosion? What are the agents of erosion?TRANSCRIPT
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Today’s Agenda…1/18
Bellringer: How do weathering and erosion change the surface of the Earth?
Turn in review worksheets Notes on Constructive and Destructive
Forces Before/After Assignment
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Weathering
What is weathering? What are the two types of weathering? Give an example of mechanical
weathering. Give an examples of chemical weathering.
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Erosion
What is erosion? What are the agents of erosion?
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Forces that shape our Earth
Science 6
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Today’s Goals…
I can describe constructive and destructive forces
I can identify examples of constructive and destructive forces
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Think about it!
How is the surface of the Earth changing everyday?
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Forces
The surface of the Earth is constantly changed by constructive and destructive forces
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Constructive Forces
Build up the Earth’s surface Types of constructive forces:
Crustal deformation Volcanic eruptions Deposition of sediment
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Crustal Deformation
The movement of plates builds landforms such as volcanoes and mountains
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Volcanic Eruptions
As lava erupts onto the Earth’s surface it cools to form new layers of rock which build up the Earth’s surface
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Deposition of Sediments
As sediments are carried away and laid down they build up landforms
Example: Sand dunes
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Destructive Forces
Wear down Earth’s surface Types of destructive forces:
Weathering Erosion
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Homework…
You are going to draw a before and after picture of a landscape
At least one constructive OR destructive force will cause a change in your landscape over time
The before picture shows what the landscape first looked like
The after picture shows what it looked like after the constructive or destructive force changed it
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Homework…
Write 1 paragraph to explain what happened to your landscape over time and what caused it to change
You will want to include terms such as: constructive force, destructive force, erosion, weathering, volcanic eruptions, deposition, crustal deformation, plate movement