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Topographic maps
Starter: Paste here
1/20/2015
149 150Topographic maps 1/20/2015
Practice: Write observations here: Draw your picture here
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.
Application: Paste Notes Here
Warm upThe 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, 2015AGENDA
Objective 8.9 B
Students will relate plate tectonics to the formation of crustal features by reading and writing during Tectonic Landforms activity
1 Starter2. Activity 3.Notes4. Ws 5. Exit
Date Lecture/ Activity/ Lab Page
Table of Contents
12/8 Newton’s third Law Lab 121-12212/9 Newton’s third Law Lab #2 123-12412/10 Newton’s laws Video Quiz 125-12612/11 Test Review 127-128 12/15 Plate Tectonic 129-13012/16 Evidence of Continental Drift 131-132 12/17 Pangaea 133-134
1/7 Plate Boundary Notes 135-136 1/8 Plate Boundary Activity 137-1381/9 Article and Quiz 139-1401/12 Semester Exam Review 141-1421/13 Plate Boundary Poster 143-1441/14-15 Plate Tectonics Candy Bar Lab 145-1461/16 Tectonics Activity 147-1481/20 Topographic Maps 149-150
Topographic maps
Starter: Paste here
1/20/2015
149 150Topographic maps 1/20/2015
Practice: Write observations here: Draw your picture here
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.
Application: Paste Notes Here
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
Topographic maps
Starter: Paste here
1/20/2015
149 150Topographic maps 1/20/2015
Practice: Write observations here: Draw your picture here
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.
Application: Paste Notes Here
Reading and Interpreting Topographic Maps
Topographic MapA 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
ElevationA 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 slopeClose = 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 v-shaped kinks in the lines that always point upstream.
Also remember - Water always flows DOWNHILL!
Blue Creek flow towards the East.
Finding the hill topsHill 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!
60070
0
800
The difference between the highest elevation point and the lowest elevation point on a map
Relief
200 300
400
Units = metersWhat is the relief of this map? What is the contour interval of this map?
200 meters
100 meters
A map made of pictures of the Earth taken from a satellite orbiting the Earth
Satellite Map View
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.
1200
1250
1150
Rules for Successful Contouring
Golden Rule #2
Contour lines NEVER split or divide!
Can’t happen!
1200
1250
1150
1150
Rules for Successful Contouring
Golden Rule #3
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???
1200
1250
1150
1100
?
This is fine!
?
Rules for Successful Contouring
Golden Rule #4
Contour lines NEVER, EVER cross
What’s going on?? Is this area above or below 1200 feet?
1200
1250
1150
1100
?
• 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 #5
Rules for Successful Contouring
Golden Rule #6
• Tops of mountains or hills are shown by closed circles
TOPO QUIZNow 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. Valleyb. Mountainc. Plain
700 750
800
X825
A
B
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. Northeastb. Southwestc. Can’t tell from inf
ormation given4. What is the
contour interval of this map?
a. 50 b. 100c. 400
Maple
Creek
800
700
600
500
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?
1200
1150
1100
C D
A
B
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 20
4060
Topographic maps
Starter: Paste here
1/20/2015
149 150Topographic maps 1/20/2015
Practice: Write observations here: Draw your picture here
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.
Application: Paste Notes Here
ExitThe 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.