sediments What are ways that rain might affect the land Could typical rainfall change the shape of the land Record your answers in your notebook Read the introduction and look for key ideas ID: 661683
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Slide1Slide2Slide3
delta
landform
model
river channel
sedimentsSlide4
What are ways that rain might affect the land?
Could
typical rainfall change the shape of the land?
Record your answers in your notebook.Slide5
Read the introduction and look for key ideasSlide6
How can moving sediments create problems for construction?Slide7
Complete the procedure and record your dataSlide8
SCORING GUIDE: Group InteractionSlide9
H
ow do your observations relate
to the topography of
Boomtown?
Share your thoughts with the class.Slide10
What
landforms in Boomtown correspond to
the top
of the model?Slide11
What area
of Boomtown corresponds to the bottom of
the model
?Slide12
Why do you think an area of sand built up in the catch basin in your model?
Share your thoughts with the class.Slide13
Analysis question 1
a. How is your river model like a real river?
b. How is it not like a real river?Slide14
Analysis question 2
Describe the biggest changes that you observed during the river
model investigation
.Slide15
Analysis question 3
Observe the photograph at right. It
shows a
river at the bottom of a canyon with
hard rock
walls.
a
. Explain how the water flowing down the
river
created the canyon.
b
. Explain what happened to the rock that
once
filled up the canyon.Slide16
Analysis question 4
How did the movement of sediments help make each of the
following landforms
?
a
. marsh
b
. hillside
c
. cliffSlide17
Analysis question 5
How could the movement of sediments cause a problem if
someone builds
on:
a
. Delta Marsh
b
. Green Hill
c
. Seaside CliffSlide18
How can moving sediments create problems for construction?Slide19
Key vocabulary definitions
D
elta
-
A fan-shaped area that develops in the flat, low
area where
a river empties into a large body of water.
L
andform -
A feature of the earth’s surface such as a lake
, stream
, valley, canyon, hill, ridge, or mountain
.Slide20
Key vocabulary definitions
M
odel
-
Any representation of a system, or its components,
to help
one study and understand how it works.
R
iver channel
-
The depression in the land through which
a river
flows.Slide21
Key vocabulary definitions
Sediments
- Small bits of decomposed earth materials such as rocks, minerals, and shells.Slide22
Investigate
Investigate how the steepness of the land affects the movement of
sediments in
the river model. Model a steeper hill by placing a book or books
under the
base of the river model and then repeat the investigation. Compare
your results
from the steeper slope with those from the less steep slope.