Transcript Topography Maps

149
Topographic maps
1/20/2015
Starter: Paste here
Practice:
Write observations here:
Draw your picture here
Topographic maps
Application:
Paste Notes Here
150
1/20/2015
Connection:
Worksheet
Exit: The rocks found on river
banks are smooth and circular in
shape. Explain what natural
phenomenon you think is
responsible for the circular
shape of the rocks.
Warm up
The map shows the western coast of South
America. Which process caused the upward
movement that formed the Andes
Mountains?
A. Seafloor spreading
B. Deposition of sediment
C. Tectonic plate collision
D. Erosion of rock layers
January 20, 2015
AGENDA
Objective 8.9 B
Students will relate
plate tectonics to
the formation of
crustal features by
reading and writing
during Tectonic
Landforms activity
1 Starter
2. Activity
3.Notes
4. Ws
5. Exit
Table of Contents
Date
12/8
12/9
12/10
12/11
12/15
12/16
12/17
1/7
1/8
1/9
1/12
1/13
1/14-15
1/16
1/20
Lecture/ Activity/ Lab
Newton’s third Law Lab
Newton’s third Law Lab #2
Newton’s laws Video Quiz
Test Review
Plate Tectonic
Evidence of Continental Drift
Pangaea
Plate Boundary Notes
Plate Boundary Activity
Article and Quiz
Semester Exam Review
Plate Boundary Poster
Plate Tectonics Candy Bar Lab
Tectonics Activity
Topographic Maps
Page
121-122
123-124
125-126
127-128
129-130
131-132
133-134
135-136
137-138
139-140
141-142
143-144
145-146
147-148
149-150
149
Topographic maps
1/20/2015
Starter: Paste here
Practice:
Write observations here:
Draw your picture here
Topographic maps
Application:
Paste Notes Here
150
1/20/2015
Connection:
Worksheet
Exit: The rocks found on river
banks are smooth and circular in
shape. Explain what natural
phenomenon you think is
responsible for the circular
shape of the rocks.
Practice
• Close your hand into a fist
with the fingers and thumb
facing away from you.
• Now pretend you are a tiny
ant crawling across a fist.
• From the ant’s point of
view, what landform does
the ridge of your knuckles
look like?
• How are your knuckles and
a mountain range similar?
Practice
• Lay the rectangle of
plastic wrap horizontally
across the knuckles of
your fist.
• Pull the overhanging
section of plastic wrap on
the outside of their hand
underneath your palm and
hold it in place with your
thumb. Hold the other
hanging piece to your palm.
Practice
• Draw a line around each
of your knuckles across
the top of the fist.
• Draw a second line
around the outside of the
first line on each knuckle.
• Draw one line around all
four knuckles.
• Discuss and write your
observations
149
Topographic maps
1/20/2015
Starter: Paste here
Practice:
Write observations here:
Draw your picture here
Topographic maps
Application:
Paste Notes Here
150
1/20/2015
Connection:
Worksheet
Exit: The rocks found on river
banks are smooth and circular in
shape. Explain what natural
phenomenon you think is
responsible for the circular
shape of the rocks.
Reading and Interpreting
Topographic Maps
Topographic Map
A map that show the elevation of the land, such
as hills and valleys, using contour lines.
http://www.math.montana.edu/~nmp/materials/ess/mountain_environments/novice/yosemite.jpg
Elevation
A term that describes the height of a point on
Earth’s surface above (or below) sea level.
This point is 6300 feet (1920 meters) above
sea level.
http://www.math.montana.edu/~nmp/materials/ess/mountain_environments/novice/yosemite.jpg
Features of a Topographic Map
• Natural Features
– Rivers, lakes
– Mountains
• Artificial (man made)
features
– Cities
– Roads, bridges
Parts of a Topographic Map
• Contour Lines
–A line that connects points
of equal elevation
–Used to show features of
the land
•Mountains, valleys, etc
Spacing of
contour lines
depends on
steepness of
slope
 Close = steep
slope
 Far apart =
gentle slope
Types of Contour Lines
Or Gentle
Contour Interval
• The difference in elevation between one
contour line and the next
• Spacing of lines depends on slope
characteristics
Index Contour
• A darker,
bolder contour
line that
indicates a
change in
elevation
• Usually found
every fifth
contour line
What is the
contour interval
in this
example?
20
What does contour line spacing
indicate?
The closer together
the contour lines are,
the steeper the hill
is. The more spread
apart they are, the
gentler the slope.
Traveling along the red
line would be much
steeper than
traveling along the
green line.
Which way is the stream
flowing?
When contour lines
cross a stream or
river, they form vshaped kinks in the
lines that always
point upstream.
Also remember Water always flows
DOWNHILL!
Blue Creek flow towards the East.
Finding the hill tops
Hill tops are easy to find. Just look for
the concentric closed contour lines that
form the top of a hill. Notice the
contour lines that form the two peaks
below.
What do those funny hachure
marks mean?
Some features, such as
the Grand Canyon,
lakes, mines, or
sinkholes actually are
holes in the ground.
The hachured
contours indicate a
depression. Don’t
confuse it with a
hilltop!
Relief
The difference between the highest
elevation point and the lowest elevation
point on a map
200
300
400
Units = meters
What is the relief of this map? 200 meters
What is the contour interval of this map? 100
meters
Satellite Map View
A map made of pictures of the Earth
taken from a satellite orbiting the Earth
Rules for Successful Contouring
Golden Rule #1
Every point along a
contour line
represents the
same elevation.
This entire line
represents 1200
feet above sea
level.
Rules for Successful Contouring
Golden Rule #2
Contour lines NEVER
split or divide!
Can’t happen!
Rules for Successful Contouring
Golden Rule #3
This is fine!
Contour lines cannot
just stop. They
must either form a
closed loop, or run
off the edge of
your map.
What’s the elevation
here???
?
?
Rules for Successful Contouring
Golden Rule #4
Contour lines NEVER,
EVER cross
What’s going on?? Is
this area above or
below 1200 feet?
?
Rules for Successful Contouring
Golden Rule #5
• Contour lines that
cross a valley or
stream are V-shaped
– The V points
towards the area
of highest
elevation
Rules for Successful Contouring
Golden Rule #6
• Tops of
mountains
or hills are
shown by
closed
circles
TOPO QUIZ
Now its time to test your topography
map reading skills. Good Luck!!
1. If you traveled
from point A to
point B, would
you be going
uphill or
downhill?
2. What landform
do you think this
map depicts?
a. Valley
b. Mountain
c. Plain
A
B
X
825
Correct!
Sorry
• Actually, you would be going uphill. Look at the elevations on the
.
contour lines you will be crossing
Sorry
3. In which direction
does Maple Creek
flow?
a. Northeast
b. Southwest
c. Can’t tell from
information given
4. What is the contour
interval of this map?
a. 50
b. 100
c. 400
5. What is the
approximate
elevation at the top
of this hill?
a. 1240
b. 1300
c. 1000
6. Which hike would
be steeper, from A
to B or from C to D?
C
D
B
A
1100
7. What is the contour
interval of this map?
a. 20 feet
b. -20 feet
c. 60 feet
8. What type of
landform is depicted
here?
a. a mountain
b. a depression
c. a valley
149
Topographic maps
1/20/2015
Starter: Paste here
Practice:
Write observations here:
Draw your picture here
Topographic maps
Application:
Paste Notes Here
150
1/20/2015
Connection:
Worksheet
Exit: The rocks found on river
banks are smooth and circular in
shape. Explain what natural
phenomenon you think is
responsible for the circular
shape of the rocks.
Exit
The rocks found on river banks are
smooth and circular in shape. Explain
what natural phenomenon you is
responsible for the circular shape of
the rocks.