Transcript how landforms change slowly quickly

Homeroom
• Planners out
• On Today’s date write: Get Report Card Signed
• I need the report cards back tomorrow!
Please fill out your planner for the entire week!
January 14-18
MONDAY
SE:
Sedimentary Rock
Fossils
HW: MS 209-212 due Thur
TUESDAY
SE:
Weathering,Erosion
Deposition Lab
HW: Due Thurs
THURSDAY
SE: Landforms made from
W.E.D.
Stream Table
FRIDAY
SE:
HW:Handwrite page 1-2 notes HW:
Quiz
Bill Nye Erosion

WEDNESDAY
SE:
Landforms made from
W.E.D.
HW:
Tutorials everyday
7:00-7:20
New
EARTH SCIENCE NOTES
When you are finished with you planner:
Get your binder and MS book!
Tuesday
Homework
• Open your MS book to page 209.
• Mark it with a sticky note
• 20 questions due on Thursday, please draw
pictures
MS book now on the floor
Get out your binder- open up to FOSSIL EVIDENCE
Write
this in
binder
Fossils are found in Sedimentary Rock!
1 dead organism + layers of sediment + Heat + Pressure + Millions of years = Fossil
How do you make a Fossil?
An Organism Dies
It’s Covered with Sediment
It’s covered with MOre sediment
It’s covered with MORE sediment
What else do you need?
Heat and Pressure
Heat and Pressure
Heat and Pressure
Lot’s of time
Lot’s of time
Lot’s of time
What are you going to get
A FOSSIL!
Let’s make a fossil
• Using cereal and gummies we are going to make a sedimentary rock
model
1.
2.
3.
4.
5.
6.
7.
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9.
Anti- Bacterial your hands
Look in the microscope at the detail of the fossil
Get a cup
Add a layer of “sediment”
Add 1 “dead organism”
Add a layer of “sediment”
Add 1 “dead organism”
Continue until layers are complete
Now add Heat and Pressure
10.Now wait at your desk…Millions and Millions of years
Once everyone is at their desks
Now very carefully you may “dig out your fossil”
And you may put the sedimentary layers in the
cave of your mouth and let the river wash it
down the canyon.
How do fossils help us
to learn more?
Thinking like a paleontologist
How do you know?
First… Look at the bear in this
picture. What environment do
Would the bear on the left live
in this warm environment?
you predict it lives in?
….Or, would the bear on the
left live in this colder
environment?
How did you decide which environment the bear lives in?
http://www.arctic.noaa.gov/gallery.html
Let’s Try Again
Would the
tree live in
this
environment?
Look at these
pictures of things
that come from a
tree. Make a
prediction about
the environment
where you would
find this tree.
http://www.nps.gov/olym/wic/gallery.htm
… or, would
the tree live
in this
environment?
This is more difficult isn’t it? Why?
What would help you decide on the
correct environment?
http://www.nps.gov/yell/slidefile/index.htm
Now you are the paleontologist
This is the environment
where you are looking for
fossils.
Here in an example of the kinds of
fossil your team has found. What
do you think the environment might
have been like in the past?
Now you are the paleontologist
You just found the plant fossils, on the left, in an area where it is
now hot and dry like the picture on the right. What predictions
can you make about what the environment might have been like in
the past?
“Small animal fossils are one of
the best indicators of
prehistoric ecosystems and
environments. For example, a
fossilized frog tells scientists
that the habitat within which
it lived must have been wetter
because the frog was
dependent on permanent water
to breed. In other words, it
was a captive within its
environment.”
A quote from a Scientist from the Page Museum's Laboratory
http://www.tarpits.org/education/guide/index.html
Once Upon a Time
Wooly Mammoth
Asian Elephant
http://www.bbc.co.uk/radio4/science/frontiers_20020515.shtml
How are these two animals the same?
How are they different?
Once Upon a Time – A Look at the Horse
Horse B
Horse A
Change Over Time – A Horse’s Foot
Note how the distance of the wrist bones from the
ground changes. What else has changed?
wrist
Adapted from Florida Museum of Natural History. For more information visit their website at
http://www.flmnh.ufl.edu/natsci/vertpaleo/fhc/relatives1.htm
Let’s Look More Closely
How have the bones in horse feet changed over time?
Why might this have happened?
Adapted from Florida Museum of Natural History. For more information visit their
website at http://www.flmnh.ufl.edu/natsci/vertpaleo/fhc/relatives1.htm
Wrap-Up
• Fossils are formed under
very special conditions.
• They give us clues about
what life was like long ago.
• Fossils also give us clues
about the environment
from a long time ago.
• They help us understand
that plant and animal
species change over time.
Why does that matter?
Allows us to understand how events have
changed the world
Might prepare us for the future
Helps us understand why our world is like it is.
Do not throw
away your cup
Stack them and
I will wash
them
STOP
Think before you leave.
1.Did you put binder on shelf
2.Do you have your planner out
3.Did you clean up your area
4.Did you push in your chair
5.Do you have all your belongings
Homeroom
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• NO TALKING
Weathering, Erosion, Deposition
CRACK- Break
WOOSH- Move
Be a Rock
Weathering-Crack
PLOP- Drop
Erosion- Whoosh
All caused by wind, water or iceDeposition- Plop
WEATHERING
EROSION
Write in your Binder the lab set up!
Do bigger rocks or small sediment
weather faster?
I think that the bigger rocks will weather faster
If I break the rock, instead of letting it dissolve.
Write in your spiral the lab set up!
Mouth, 2 tic tacs
__________________
Write in your spiral the lab set up!
1. Put a tic tac in your mouth, do not bite it
2. Lightly swish it with your “river” in your mouth
a. Think about your observations
3. Now swish it faster and hit your teeth
(rocks)…do not break it
a. Think about your observations
4. Now bite it and swish it
a. Think about your observations
5. Swallow and write your observations
Write in your spiral the lab set up!
__________________
Summarize the tic tac lab, explaining
what the tic tac represents and the
limitations of this model.
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Copy on new page
Changes to Earth’s Surface
Changing Landforms
Landforms
• Physical features on the Earth’s
surface
• These can be found on dry land or under
water i.e. mountains, beaches, valleys,
plateaus, rivers, etc.
Examples of Landforms
Landforms Change All the Time
Wind
Moving Water
Rain
Glaciers
Volcanic Eruptions
Earthquakes
Hurricanes
Weathering
Process of breaking down rock into smaller
pieces, or sediments
Smoothes out rocks edges
2 Types of Weathering
Physical Weathering
Chemical Weathering
Physical vs. Chemical Weathering
Physical Weathering
breaks up rocks without
changing their
composition
Chemical Weathering
slowly changes the
minerals that rocks are
made up of.
Example- Rocks to
sediment
Example- Statue of
Liberty
How does water effect weathering?
When water leaks into
the cracks of rock and
freezes the rock
expands, then freezes
And what about
glaciers?
Erosion
• Process of moving
sediment from one
place to another
Deposition
Process of depositing
sediment in a new
location
What New Landforms are Created by
erosion and deposition?
 Underwater volcano
 Eroding force of a river channel
 Deposition of sediment at the mouth of a river
 A glacier stops moving forward and deposits the
sediment it carried with it
Changes to Earth’s Surface
Weathering Erosion
Deposition
Landform
Breaks
Erodes
Depositing
Mountains
Cracks
Moves
Drops
Beaches
Freezes
Carries
Removes
Valleys
Carves
Flows
New
Locations
Plateaus
Expands
Floats
Rivers
Stream Table- Demonstration
Let’s Discuss what happens in the model!
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HOW LANDFORMS CHANGE
SLOWLY
WEATHERING
Canyons
EROSION
glaciers
Valley
Deposition
Beaches
Deltas
Oxbow lakes
Islands
QUICKLY
MASS MOVEMENT
mudslide
landslide
sinkholes
avalanches
volcanoes
earthquakes
fires
floods
Stream Table- Demonstration
Let’s look at this model, again!
http://www.clccharter.org/euzine1/cavewebsite.html
Caves
Candle Demonstration of Stalagmites/Stalactites
HOW LANDFORMS CHANGE
SLOWLY
WEATHERING
Canyons
QUICKLY
MASS MOVEMENT
mudslide
landslide
sinkholes
avalanches
floods
volcanoes
earthquakes
fires
Add
EROSION
glaciers
Valley
Caves
Add
Deposition
Beaches
Deltas
Oxbow lakes
Islands
stalagmites/stalactites
HOW LANDFORMS CHANGE
SLOWLY
WEATHERING
Canyons
EROSION
glaciers
Valley
Caves
QUICKLY
MASS MOVEMENT
mudslide
landslide
sinkholes
avalanches
floods
volcanoes
earthquakes
fires
Deposition
Beaches
Deltas
Oxbow lakes
Islands
stalagmites/stalactites
Take home your binders so
you can study for your quiz.
Please bring them back
tomorrow!
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2.Do you have your planner out
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Homeroom
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• You need to be Studying for science quiz
• NO TALKING
Desks cleared off when I come in
• Binders on shelf
• Pencils sharpened
• 15 questions on the quiz
When you are finished with quiz:
• Quietly read
• We will grade quiz when
everyone is finished
• Then we will watch
Bill Nye- Erosion
STOP
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2.Do you have your planner out
3.Did you clean up your area
4.Did you push in your chair
5.Do you have all your belongings