Analyze the differences. Why they are so different?

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Transcript Analyze the differences. Why they are so different?

Analyze the differences.
Why they are so different?
Rocky Mountains
Appalachian Mountains
Rocky Mountains
Formed about 70 million
years ago.
Appalachian Mountains
Began to form
about 480 million
years ago.
Lab: Modeling Weathering, Deposition
and Erosion of Mountains
1. Use a hand lens to observe or analyze the sandpaper
carefully. Rub your finger on the sandpaper and feel the
2. Pick a small section of the sandpaper to rub the
sandpaper against the wooden popsicle stick. Rub for 30
seconds. Make sure not to rub the entire sandpaper
sheet against the wood.
3. Use the hand lens to analyze any changes that happened.
Feel the sandpaper that you just used to sand the wood
with your finger. Compare this to the sandpaper you did
not use.
Geological Processes
Geo means “Earth”
Definition: natural forces
that shape the surface
of the earth
Plate tectonics,
weathering, erosion
Draw on your lab page:
New Mountains. Little to no weathering or erosion. (Sandpaper before)
Weathering begins to break up the mountains. Erosion
moves the sediments into the valley’s where they are
Millions of years later, the valleys have been
completely filled with sediments and land is flat.
(Sandpaper after sanding)
Using the information from this
lab, develop an individual and
group definition for each of the
following terms.
The breaking
down of
Earth's rocks
and soils into
smaller pieces.
Sediment is rock
and soil that has
been broken
down into
smaller pieces
The movement of
sediment from its
original home to a
new location.
Wind, water and
gravity cause
The natural process of
laying of sediment
in a new location.
Deposition causes
landforms to build
up. Examples
include deltas and
sand dunes.