Topographic Maps

Front

What is a topographic map?

Back

A topographic map is a detailed and accurate graphic representation of features that appear on the Earth's surface, including elevation, terrain, and landforms.

Front

What do contour lines represent on a topographic map?

Back

Contour lines represent elevation and the shape of the terrain. Each line connects points of equal elevation.

Front

What does it mean when contour lines are close together?

Back

When contour lines are close together, it indicates a steep slope or a steep area.

Front

What does it mean when contour lines are far apart?

Back

When contour lines are far apart, it indicates a gentle slope.

Front

How can you determine the elevation of a point on a topographic map?

Back

You can determine the elevation of a point by looking at the nearest contour line and its labeled elevation.

Front

What is the significance of the index contour on a topographic map?

Back

Index contours are the darker, thicker lines that are labeled with their elevation, making it easier to read the map.

Front

What is the purpose of a scale on a topographic map?

Back

The scale shows the relationship between distances on the map and actual distances on the ground.

Front

What is a benchmark on a topographic map?

Back

A benchmark is a point of known elevation, marked on the map, used for reference.

Front

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

Back

Subtract the elevation of the lower point from the elevation of the higher point.

Front

What natural processes can change the features shown on a topographic map?

Back

Natural processes such as erosion, sediment deposition, and tectonic activity can change the features shown on a topographic map.