changes to the surface of the earth….. slow vs. fast fast changes volcanic eruptions earthquakes...
TRANSCRIPT
Changes to the surface of the
Earth….
Slow Vs. Fast
Fast Changes• Volcanic eruptions• Earthquakes• Mudslides• Landslides
Slow Changes• Erosion• Weathering• Deposition
Changes…..
Slow…. Fast….
Weathering…---breaking down of rock into silt, sand or clay…..
Erosion----transporting of the broken down rock caused by weathering
Wind Erosion….
Wearing away by the wind, can form such formations as dunes….
ICE EROSION Two types of glaciers
A. Valley- U-shaped valleys, and they are high in the mountains.
B. Continental glaciers cover large areas of Earth
WaterWater and Wind are both agents of erosion and weathering.
Which of the following is the breaking down of rock into silt,
sand and clay?
Erosio
n
Weath
ering
Depositi
on
Landsli
de
25% 25%25%25%
1. Erosion2. Weathering3. Deposition4. Landslide
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Which of the following is the transporting of silt, sand or clay
into a new location?
Erosio
n
Weath
ering
Depositi
on D
elta
25% 25%25%25%
1. Erosion2. Weathering3. Deposition4. Delta
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Fast Changes!!!!
Hurricanes
Earthquakes….
Review (Slow v. Fast)
Some changes are slow! Some changes are fast!
Which of the following would be considered a fast change to the
Earth’s surface?
A tsunami ta
ki...
A rive
r ero
din...
Wind ca
rrying .
..
deposition
25% 25%25%25%1. A tsunami taking out a coastline
2. A river eroding soil along the shoreline and forming a delta
3. Wind carrying a sand in the dessert and making a dune.
4. deposition
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Landforms
• Glaciers or large sheets of ice form GLACIAL MORAINES – Cape Cod and Long Island are both GLACIAL MORAINES.
• Glacial moraines are formed as large pieces of ice push along the earth’s surface leaving behind large pieces of sediment. The large pieces of sediment form a landform known as the glacial moraine.
Landforms continued…
• Dunes are formed from wind erosion. They are formed slowly over time.
Landforms cont…
• Deltas are formed when water (rivers, streams or lakes) pick up sediment and deposit them into a new location. Over time, it creates a land mass known as a delta.
Mountain Formation
• Let’s look at a video…http://www.brainpop.com/science/earthsystem/mountains/zoom.weml
The earth is made up of plates. The The plates are in constant movement. Sometimes plates collide, energy is released and new landforms are produced. Sometimes plates pull apart and allow magma to come to the earth’s surface.
Which of the following is made from river deposited sediments?
Dune
Delta
Glacia
l Mora
in... Ig
loo
25% 25%25%25%1. Dune2. Delta3. Glacial Moraine4. Igloo
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Which of the following is a landform that is made from wind
erosion?
Delta
Dune
Glacia
l Mora
in... Ig
loo
25% 25%25%25%1. Delta2. Dune3. Glacial Moraine4. Igloo
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PangeaTheory that our world consisted of one giant “SUPER CONTINENT.”
Fossils provide evidence of what organisms lived before us…
What type of rock would I find a fossil in and why?
Igneous, metamorphic, or sedimentary?
What have we learned?
• What are some slow changes?• What are some fast changes?• What is landform is made from water erosion?• What is a sand dune? What type of erosion
forms a dune?• What is weathering?ADVANCED…..How would freezing and thawing affect the surface
of the earth?
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