- How do the lines indicate which side of the mountain is the steepest?
- How is depression represented on a contour map?
- Do Isolines have sharp angles or gentle curves?
- What are the golden rules of contour lines?
- What are 3 types of contour lines?
- What are the basic features of contour lines?
- What do V shaped contour lines indicate?
- What does a contour interval mean?
- Why do topo lines rarely touch or cross?
- Why is it unlikely for contour lines to cross?
- Why do Isolines never cross?
- What is the space between contour lines called?
- How do contour lines work?
- Can contour lines ever cross?
- What 2 types of lines show elevation differences?
- What is a depression contour line?
- Do Isolines ever end?
- What happens when a contour line crosses a stream?
- What are the uses of contour lines?
- What is the pattern of the contour lines around a simple hill?
- How are contour intervals calculated?
How do the lines indicate which side of the mountain is the steepest?
Contour lines that are close together indicate a steep slope, where the elevation changes quickly over a short distance.
If the contour lines are so close together that they seem to touch, they indicate a very steep slope, such as a cliff.
In contrast, contour lines that are far apart indicate a gentle slope..
How is depression represented on a contour map?
A depression is represented by a series of concentric closed contours with the inner contours having lower elevation than their outer surrounding. There are small tick marks or hachures on these contour lines pointing towards lower elevation.
Do Isolines have sharp angles or gentle curves?
2. Isolines are gentle, curving lines- no sharp corners.
What are the golden 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 3 types of contour lines?
There are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary.Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. … Intermediate lines are the thinner, more common, lines between the index lines.More items…
What are the basic features of contour lines?
Other characteristics of contour lines are: – Uniform slopes have uniformly spaced lines. – Along plane surfaces, contour lines are straight and parallel. – Contour lines are perpendicular to lines of steepest slopes. – For summits or depressions, contour lines most close upon themselves.
What do V shaped contour lines indicate?
Widely spaced contour lines indicate that the land is relatively level. A contour line that bends to form a V shape indicates a valley. The bend in the V points toward the higher end of the valley; this V points upstream, or in the direction from which the water flows, if there is a stream.
What does a contour interval mean?
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. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing.
Why do topo lines rarely touch or cross?
Topo lines rarely ever touch or cross That is because each line is a different elevation. That means no point can be two different elevations.
Why is it unlikely for contour lines to cross?
Contour lines never cross on a topographic map because each line represents the same elevation level of the land.
Why do Isolines never cross?
Each contour line represents a different elevation, and you can’t have two different elevations at the same point. An example would be how 500 meters above sea level will never be equivalent to 1000 meters above sea level.
What is the space between contour lines called?
The space between the contour lines is called the contour interval and represents a specific (set) distance. If the contour interval is 50 feet, the vertical space between the two contour lines is 50 feet.
How do contour lines work?
Contour lines are lines drawn on a map connecting points of equal elevation, meaning if you physically followed a contour line, elevation would remain constant. Contour lines show elevation and the shape of the terrain. … In order to keep things simple, topographic maps show lines for certain elevations only.
Can contour lines ever cross?
Rules of Contour Lines By definition, contour lines separate points of higher elevation from points of lower elevation. This means it is always possible to define an “uphill” direction on one side of a contour and a “downhill” direction on the other side. Contour lines never cross.
What 2 types of lines show elevation differences?
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 does each contour line on a map show? Each contour line shows a different elevation.
What is a depression contour line?
A closed contour, inside of which the ground or geologic structure is at a lower elevation than that outside, and distinguished on a map from other contour lines by hachures marked on the downslope or downdip side.
Do Isolines ever end?
Isolines never end, except at the edge of a map. 5.) The change in value from one isoline to the next is always the same.
What happens when a contour line crosses a stream?
Contour lines “point” upstream when they cross a river or stream. … The water flows out of the opening of the V or U shape and the closed end points uphill. Rule # 5- The spacing of contour lines depends on slope characteristics. Closely spaced contour lines represent a steep slope.
What are the uses of contour lines?
In cartography, a contour line (often just called a “contour”) joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes.
What is the pattern of the contour lines around a simple hill?
What is the pattern of the contour lines around a simple hill? The contour lines don’t really change shape as the go up and around the hill. A gradual increase up. in which water flows across the lines.
How are contour intervals calculated?
Divide the difference in elevation between the index lines by the number of contour lines from one index line to the next. In the example above, the distance 200 is divided by the number of lines, 5. The contour interval is equal to 200 / 5 = 40, or 40-unit contour intervals.