1. Do Now
Get a packet from small book shelf by chalk board, follow the arrow
What is a contour line, contour interval, and a contour index?

2. Calculating Elevations !!!
1. Underline if you are trying to find the Highest or Lowest elevation.
2. If you are trying to find the LOWEST elevation, you must SUBTRACT from the elevation provided.
If you are trying to find the HIGHEST elevation, you must ADD to the elevation provided

3. Calculating Elevations Con’t
3. Multiply:
- # of contour lines x contour interval
4. If finding Lowest: Subtract answer from the step 3 from Highest elevation provided.
If finding Highest: Add answer from the step 3 to Lowest elevation provided.
5. Answer = ELEVATION
(always remember to label)
*note: # of contour lines= # of spaces

4. Check

5. What it will look like at end
1000
900
800
1 Highest
2 Add
3 100x8= 800
= 1000
5 elevation= 1000m
700
600
500
400
300
200

6. Calculating Contour Intervals
Find the DIFFERENCE between the two elevations provided
Count the number of SPACES between each index contour line
DIVIDE: difference / # of spaces
Answer: CONTOUR INTERVAL
* note: DSDC (think of a phrase that will help you remember these letters in this exact order)