Table of Contents
- 1 What connects areas of equal elevation?
- 2 What connects points of elevation on a topographic map?
- 3 What two types of lines show elevation differences answer choices?
- 4 Why do contour lines bend and form a V shape with the presence of a river?
- 5 What are the 3 types of contour lines?
- 6 What 2 types of lines show elevation differences?
- 7 Which is the best description of a topographic map?
- 8 What is the maximum elevation of a hill?
What connects areas of equal elevation?
contour
A contour is an imaginary line that connects points of equal elevation. A contour line may represent a visible line such as a lake shoreline, but usually contours are sketched between and around points of known elevations, as shown in the graphic.
What connects points of elevation on a topographic map?
Contour lines
Contour lines connect a series of points of equal elevation and are used to illustrate relief on a map. They show the height of ground above mean sea level (MSL) either in metres or feet, and can be drawn at any desired interval.
What contour connects points of equal elevation?
A contour line or isoline connects points on a map that are of equal value. Examples of contour lines or isolines are isobars (pressure) and isotherms (temperature). Perhaps the prototypical example of a contour line is that which connects points of equal elevation (that is, height above sea level).
What are lines of equal elevation called on topographic maps?
Contours are imag- inary lines that join points of equal elevation on the surface of the land above or below a reference surface, such as mean sea level. Contours make it possible to measure the height of mountains, depths of the ocean bottom, and steep- ness of slopes. A topographic map shows more than contours.
What two types of lines show elevation differences answer choices?
Topographic maps have contour lines that connect points of identical elevation above sea level. Contour lines run next to each other. Adjacent contour lines are separated by a constant difference in elevation, usually noted on the map. Topographic maps have a horizontal scale to indicate horizontal distances.
Why do contour lines bend and form a V shape with the presence of a river?
As a rule of thumb, the V-shaped contour is pointing upstream (the opposite direction from the flow of a stream or river). The “V” shape contours indicate streams and drainage. As you can see, the “V” points uphill to a higher elevation.
How do you read a topographic map scale?
The first number of the scale is always one. It’s your unit of measurement, usually an inch. The second number is the ground distance. For example, if your U.S. Geological Survey (USGS) map has a scale of 1:24,000, it means that 1 inch on the map is equal to 24,000 inches (2,000 feet or 610 meters) in the real world.
What are the five rules of contour lines?
Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.
What are the 3 types of contour lines?
Contour lines are of three different kinds. They are the Index lines, Intermediate lines and the Supplementary lines.
What 2 types of lines show elevation differences?
How can a flat map show elevations? Contour lines are used to show elevation on a topographic map. Lines or isolines on a map that connect points with the same elevation.
What are the 5 colors on a map?
RED -Overprinted on primary and secondary roads to highlight them.
What does a contour line on a topographic map mean?
Contour Line A line on a map that connects points of equal elevation. These lines not only show elevation but also show the shape of the land. Topographic Maps Contour Interval This is the difference in elevation between each line.
Which is the best description of a topographic map?
Introduction to Topographic Maps Introduction to Topographic Maps Topographic Maps Topographic maps are two dimensional models of the Earth’s, which is considered three dimensional. Topographic maps are also known as contour maps. Topographic maps illustrate elevation above sea level using contour lines.
What is the maximum elevation of a hill?
The maximum possible elevation for a hill is one less than the value that would have designated the next contour line. In other words, the highest possible elevation of the hill is just below the value of the next contour line, even though that line is not shown. 50 60 70 80 90 Closely-Spaced Contours
How is a depression represented on a map?
Depressions Contour lines that show a depression, crater, or sinkhole on a map are represented by dashed lines (hachure marks) on the inside of a contour line. The elevation of the first depression contour is the same as the nearest regular contour line.