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.
What type of lines are used to find elevation?
Contour Lines
: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level).
What’s the difference between elevation and contour lines?
The elevation difference between two adjacent contour lines is called
the contour interval (CI)
. Usually the contour interval is noted on the map legend. … The elevation difference or vertical distance between two adjacent contour lines would be 20 meters (100 : 5 = 20). Therefore the contour interval is 20 meters.
How do you read elevation?
To find an elevation, simply
set the rod foot at any location on the job within
the range of your laser or optical instrument. Run the detector and / or front rod section up or down until you pick up the “on grade” signal from your detector. Read the number opposite the pointer. That number is your true elevation.
Which shaped lines indicate the presence of a ridge?
Which shaped lines indicate the presence of a ridge? Explanation:
The contour line with U-shape
, which has convexity towards a lower ground shows the presence of a ridge.
What is the distance between two contour lines called?
A contour interval
is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.
What do topographic maps show us?
Topographic maps are
a detailed record of a land area
, giving geographic positions and elevations for both natural and man-made features. They show the shape of the land the mountains, valleys, and plains by means of brown contour lines (lines of equal elevation above sea level).
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 is an example of elevation?
Elevation is defined as the height above the ground or other surface, or a place or position of height. An example of elevation is
a plane flying at 36,000 feet above the ground
. … An example of elevation is a ballet dancer leaping three feet in the air.
What is good elevation gain?
A good elevation gain that describes an acceptable route has a climbing of 100 feet per mile or
1000 feet every 10 miles
. This is an ideal ratio that makes sure the elevation gain is in line with other parameters.
How do you read a lot plan?
- Find The Title Block. In the bottom right corner of most plans, you’ll find what’s called a title block. …
- Learn the Plan’s Scale. …
- Determine the Orientation of the Plan. …
- Know the Datum Point. …
- Note the Site’s Contours. …
- Locate Existing Structures.
Is a line lying in a level surface?
Explanation:
A level line
is a line lying in a level surface. It is, therefore, normal to the plumb line, at all points. … Horizontal plane through a point is a plane tangential to the level surface at that point. Explanation: Horizontal plane through a point is a plane tangential to the level surface at that point.
What are 3 types of contour lines?
Contour lines are of three different kinds. They are
the Index lines, Intermediate lines and the Supplementary lines
.
What does contour lines are close together mean?
Contour lines that are relatively close together indicate
a slope that is fairly steep
. Contour lines that are further apart indicates a slope that is relatively flat. The area of the map above boxed in orange shows an area that has a fairly steep slope, while the area boxed in purple is a relatively flat area.
What’s the difference between two contour lines?
The elevation difference between two adjacent contour lines is called
the contour interval (CI)
. Usually the contour interval is noted on the map legend. In most topographic maps every 5th contour line is drawn in bold print or wider than other contours. Such lines are called index contour lines.
What is the difference between two consecutive contour lines is?
Contour Interval (abbreviated as C.I.)
= the difference between two consecutive contours.
