Basics
Latitude and Longitude
Gradient
Profiling
Rivers
100

These types of maps show the shape of the land (example: elevation, lakes, rivers, mountains, etc)

Topographic Maps or Contour Maps

100

This type of line is measured North or South of the Equator

Latitude

100

Gradient is the measure of...

how steep or gradual a slope is over a given distance

100

A profile is...

a representation of what the land would look like from the side/if you were actually there

100

A river always flows from _____________ to ______________.

High elevation to low elevation

200

The smooth lines on a topographic map are called...

contours

200

This type of line is measured E or W of the prime meridian

Longitude

200

What is the formula for gradient?

Gradient= change in field value/distance

200
when making a profile, first you have to:

Place an index card or scrap piece of paper across the distance you want to profile

marking each contour line you cross


200
You can tell what direction a river is flowing based on...

The shape of the contours- a V-shape is formed and the river flows out of the V shape

300

The contour interval is...

The amount of space/elevation between contour lines

300

The coordinates of any point in New York State will be what compass directions?

North Latitude, West Longitude

300

What is the gradient between points A and B if: 

A is located at 100 ft

B is located at 500 ft

The distance between A and B is 2 km

500-100= 400

400/2=

200 ft/km

300
When making a profile, after you mark all contour lines on your index card or scrap piece of paper, you have to...

place the index card or paper onto the graph and plot each point at the appropriate elevation and distance apart

400
A steep area on a map is represented by...

contour lines close together

400

How many minutes are between each degree of latitude or longitude?

60 minutes

400

What is the gradient if: 

C= 1200 km

D=850 km

Distance between C and D= 70 miles

1200km-850km= 350km

350km/70 mi=

5 km/mi

400
After you use your index card to get all the contour lines across a profile AND after you plot all the points onto the graph at the appropriate elevations and distances, you have to...

Connect the points!

500

A depression is represented on a topo map by...

hashmarks on the contour lines 

500

Write out the coordinates for a location at 45 degrees north of the equator and 120 degrees 30 minutes east of the prime meridian using proper symbols!

450 N, 120030'E

500

What is the gradient if: 

R is located at 50 feet

S is located at 15 feet

Distance between R and S is 5 km

50ft-15ft= 35 feet

35ft/5km=

7 ft/km

500

When making a profile, what is important to check on the map to make sure you have the correct elevations? 

The contour interval OR if there are any hills/mountains because at the top you will repeat the same elevation and then go down in elevation

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