
Unit 1 Lesson 4: E+D by Wind, Ice, and Gravity
Presentation
•
Science
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6th Grade
•
Medium
+15
Standards-aligned
Jesse Jayne
Used 46+ times
FREE Resource
31 Slides • 14 Questions
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Erosion and Deposition
by Wind, Ice, and Gravity
How do wind, ice, and gravity change Earth's surface?
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Open Ended
How do you think wind can erode materials?
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Open Ended
The dark spots you see in this photo on the right are dirt and rock frozen in the ice.
What do you think will happen to the dirt and rocks when the ice melts?
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When wind moves soil, sand, and rock particles - they act as agents of erosion.
Abrasion - the wearing down of rock by agents of physical weathering.
Rocks can become smooth and polished.
How can the wind shape Earth?
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The removal of sediment by wind is called deflation.
Desert pavement is the result of soil and fine sand being blown away leaving behind small pebbles and rocks.
Creation of Desert Pavement
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Open Ended
How does the desert pavement form?
(USE SCIENCE WORDS)
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How can wind shape the Earth?
Dunes
Dunes are mounds of wind deposited sand that are common along she shores of ocean lakes and in deserts.
Dunes move in the same direction the wind is blowing.
A dunes gently sloped side faces the wind until it reaches the crest, where it will gently fall down the slip face.
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Sand Dunes - Middle East
Great Sand Dunes National Park - Colorado
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Open Ended
Why is the slip face of a dune steeper than the windward slope?
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Multiple Choice
In which direction does the wind blow across the photographed dune?
Left to Right
Right to Left
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Multiple Choice
Which side of the dune in the photograph is the slip face?
Left Side
Right Side
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Thick deposits of wind-blown, fine-grained, sediment.
Loess can be found thousands of miles from their original source and build up over thousands or millions of years.
Forms good soils for growing crops
Loess
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All materials carried and deposited by a glacier.
Glacial Drift
A glacier is a large mass of moving ice that forms by the compaction due to natural performances.
Glaciers move downhill due to gravity and drop their loads when they melt.
Glaciers
Geological Bulldozers
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Glaciers
Glacial Drift
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Open Ended
Where is North America (continent) would you expect to find glaciers?
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Match
Sharp, pyramid shaped peaks formed by several aretes.
Jagged ridges that form between two or more cirques.
Bowl-shaped depressions where glacial ice cuts back into mountain walls.
Form when glaciers erode river valleys.
Small glacial valleys that join the deeper main valley.
Horns
Aretes
Cirques
U-Shaped Valleys
Hanging Valleys
Horns
Aretes
Cirques
U-Shaped Valleys
Hanging Valleys
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Open Ended
How could a glacier carry large rocks over long distances?
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Kettle Lakes
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Open Ended
What does the formation of erratics and kettle lakes have in common?
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Multiple Select
What factors work with gravity to contribute to creep?
water
plant roots
animals
wind
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Multiple Select
What factors can influence the chance of a rapid mass movement?
rainfall
human actions
gradient
gravity
birds
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Open Ended
List 5 events that can trigger a mass movement...
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Multiple Select
What are the three agents of erosion covered in this lesson?
animal actions
wind
water
ice
gravity
Erosion and Deposition
by Wind, Ice, and Gravity
How do wind, ice, and gravity change Earth's surface?
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