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.