Understanding Topographic Maps and Elevation

The video introduces eighth-grade students to topographic maps, explaining how they represent geological features like mountains and valleys. It covers the concept of elevation and how contour lines on maps indicate different elevations. The video also explains contour intervals and demonstrates how to calculate elevation differences using a sample problem. Finally, it provides instructions for guided practice with topographic maps.

What do topographic maps primarily represent?

• Road networks

• Population density

• Geological features

• Weather patterns

Which of the following is a characteristic of contour lines that are close together?

• They represent a steep slope

• They indicate a flat area

• They show a valley

• They mark a river

What is the term used for the difference in elevation between contour lines?

• Slope measure

• Contour interval

• Height difference

• Elevation gap

If a contour interval is 20 meters, how much elevation is gained when moving up three lines?

• 60 meters

• 40 meters

• 80 meters

• 100 meters

What is the elevation at a point that is two contour lines above a base point of 1200 meters, with a contour interval of 20 meters?

• 1220 meters

• 1260 meters

• 1280 meters

• 1240 meters

How do you calculate the difference in elevation between two points on a topographic map?

• Add the elevations of both points

• Subtract the lower elevation from the higher elevation

• Multiply the contour interval by the number of lines

• Divide the total elevation by the number of contour lines

What is the elevation at point X if it is on a labeled line of 1600 meters?

• 1600 meters

• 1700 meters

• 1500 meters

• 1400 meters

What is the difference in elevation between point X at 1600 meters and point Y at 1240 meters?

• 400 meters

• 340 meters

• 360 meters

• 380 meters

Which of the following best describes a flat area on a topographic map?

• Contour lines are close together

• Contour lines are far apart

• Contour lines form a circle

• Contour lines are zigzagged

What should you do if a map is printed incorrectly during guided practice?

• Cross it off and use the correct map

• Skip the map and move to the next

• Ask the teacher for a new map

• Use it as is