Transcript Welcome to Science 9/21 - Manchester High School

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Observe the 3 mountain ranges below. Write a
description of each mountain and predict how they
might have formed.
Today’s Schedule
1. Ch. 7 Section 4 Notes/Discussion
2. Mountain Assignment
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Have you ever been stressed out about something?
The Earth also gets stressed out.
Today our objective is to discover how the Earth
reacts when it gets stressed.
Open you books to page 181.
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Pick up a slip of paper with two mountain
ranges on it from the cup on the cart at the
front of the room. Also have your paper out
from yesterday.
Today’s Schedule
1. Question of the Day
2. Conclude discussion over Section 4
3. Begin Mountain Range Assignment
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The Himalayas are the highest mountains on Earth.
They lie between India and China. The Himalayas
are getting about 5mm higher each year. Which
statement correctly describes the constructive and
destructive forces affecting the Himalayas?
A. Weathering & erosion forces are not affecting
the Himalayas.
B. Weathering & erosion are happening at a greater
rate than mountain-building forces.
C. Weathering & erosion are happening at a lesser
rate than mountain-building forces.
D. Weathering & erosion are happening at the same
rate as mountain-building forces.
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Stress is the amount of force put onto an object.
Depending on the conditions, rocks will behave
differently when under stress.
How do you think stress affects Earth’s crust?
Bend/fold
Break/snap
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Compression- happens when the crust is
squeezed.
Tension- happens when rock is pulled
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Folding occurs when rock layers bend.
3 Types
1. anticline
2. syncline
3. monocline
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If the conditions are right, rocks can break and
slide. This is called a fault.
SAVAGE EARTH Animations
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Over time the small folds and faults that
stress the Earth’s crust can build into giant
mountains like Mount Everest.
Your goal now is to learn more about how the
different types of stress can lead to the
formation of mountain ranges.
Today’s Schedule
1. Conclude Ch. 7 Section 4
2. Introduce Ch. 8
3. Start Assignment
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Usually form at a convergent boundary where
two continental plates collide.
Crust is squeezed upward.
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http://education.sdsc.edu/optiputer/flash/indiaMove.htm
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http://www.cdli.ca/courses/geog3202/unit01_org01_ilo06/b_activity.html
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Form when a series of faults break/slip.
Tension usually causes fault-block mountains
to form.
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Form from lava layers that build up after each
eruption.
Only mountains to form from new crust.
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http://www.pbs.org/wnet/savageearth/animations/volcanoes/index.html
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OBJECTIVE: Identify how two different
mountain ranges form.
Fill in the table completely.
On the map, locate where your two ranges
are with the symbol for mountains and draw
in the plate boundaries that played a role in
making your mountains.
*Bonus* Accurately draw in all of Earth’s
major plate boundaries.
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True or False: Earth’s tectonic plates are always in
motion.
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Since Earth’s plates are always moving, what do
you think the land looks like in the areas that two
plates meet?
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Land near plate boundaries is constantly pulled,
pushed, folded and rearranged. The San Andreas
fault in CA is one of the most jagged and rugged
areas in the world because it is constantly being
shifted and uplifted by plate movement.
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In this lab you will research the types of landforms
created near plate boundaries.
You will construct these landforms using modeling
clay.
Everyone in the group will participate in the lab and
create their own models.
Materials you will need: Textbook, clay, toothpicks,
and lab sheet.
Follow the Procedure and Ask Questions