Exploring Topo Gradient Concepts

The video tutorial explains how to calculate the gradient of a slope on a topographic map. It begins with an introduction to topographic maps, highlighting key features like contour lines and map scales. The gradient formula is then introduced, which involves the change in elevation divided by the distance between two points. The tutorial demonstrates how to determine the elevation difference between points X and Y using contour intervals and how to measure the distance using a map scale. Finally, the gradient is calculated, resulting in an elevation increase of 80 units per mile, with units unspecified.

What is the first step in calculating the gradient on a topographic map?

• Recording the gradient formula

• Identifying the contour lines

• Measuring the elevation of a point

• Finding the distance between two points

Where can you find the formula for gradient in the reference tables?

• Page 3

• Page 1

• Page 5

• Page 2

What does the field value refer to in the context of a topographic map?

• Distance

• Elevation

• Pressure

• Temperature

What is the elevation of point Y?

• 400

• 300

• 380

• 320

How do you determine the contour interval on a topographic map?

• By measuring the distance between two points

• By checking the map scale

• By identifying the difference in elevation between contour lines

• By using a calculator

What is the elevation of point X?

• 380

• 400

• 360

• 300

How do you measure the distance between points X and Y?

• Using a ruler

• Using a compass

• Using the map scale and scrap paper

• Using a calculator

What is the distance between points X and Y?

• 1 mile

• 0.5 miles

• 2 miles

• 1.5 miles

What is the change in field value between points X and Y?

• 120

• 80

• 60

• 100

What is the gradient between points X and Y?

• 120 units per mile

• 60 units per mile

• 100 units per mile

• 80 units per mile