Table of Contents
- 1 What feature on a map shows the ratio of map distance to actual distance on earth?
- 2 Which type of map shows changes in elevation at Earth’s surface?
- 3 Which of the following is displayed as the ratio of a distance on a map to the equivalent distance measured in the same units on the ground?
- 4 What direction is always at the top of the map?
- 5 What are two requirements of a good map symbol?
- 6 How long does it take to make a topographic map?
What feature on a map shows the ratio of map distance to actual distance on earth?
Scale is the ratio of the distance on the map to the actual distance on the Earth’s surface. A map of scale 1:24,000 means that one inch on the map is equivalent to 24,000 inches on the ground.
Which type of map shows changes in elevation at Earth’s surface?
The distinctive characteristic of a topographic map is the use of elevation contour lines to show the shape of the Earth’s surface.
Why is it impossible to portray the earth accurately on a flat surface?
2. Why is it impossible for a map of the world to portray Earth as accurately as can be done with a globe? Because a map is actually a projection of a three dimensional almost spherical planet on to a two dimensional flat piece of paper.
What type of mapping combines many traditional types of maps into one?
GPS mapping combines many traditional types of maps into one.
Which of the following is displayed as the ratio of a distance on a map to the equivalent distance measured in the same units on the ground?
Map scale
Map scale is defined as the ratio of the distance between two points on the map to the corresponding distance on the ground.
What direction is always at the top of the map?
Mapping
- On a map the top always points to the north. The south is to the bottom, opposite to North. Towards the right is the east and to the left is west.
- Locations on maps are always pointed on left, right, top and bottom side of the map.
- The video tell us about marking of directions.
How do you find the elevation on a topographic map?
You can figure out the elevation of any point by finding the nearest labeled line, counting the number of lines above or below it, multiplying by the contour interval, and adding or subtracting the result from the nearest marked contour line. The more closely spaced the contour lines, the steeper the slope.
Why is no map 100 accurate?
It is because there is a turning angle of 90 degrees even in the real place where “It turns 90 degrees on the left side looking” on the map is shown. On the other hand,National GeographicWe adopt the map projected by the method called “Winkel projection” because “size and shape are accurate”.
What are two requirements of a good map symbol?
VISUAL HIERARCHY: a hierarchy of symbology should be used for the lettering, line weights and shading. More important features are typically larger and/or darker, less important/background information should be smaller and/or lighter. At the same time, do not “over weight” or “under weight” features.
How long does it take to make a topographic map?
Making a topographic map Producing an accurate topographic map is a long and complex process. It can take 5 years from the identification of a mapping requirement to the printing of a large-scale map like one of the USGS 7.5-minute, 1:24,000-scale quadrangle maps.