What is a spur in land navigation?

What is a spur in land navigation? Spur: A spur is a short, continuous sloping line of higher ground, normally jutting out from the side of a ridge. A spur is often formed by two roughly parallel streams cutting draws down the side of a ridge. Contour lines on a map depict a spur with the U or V pointing away from high ground.

What is a spur map? A spur is a ‘V’-shaped hill that juts out. A simple way to tell a valley from a spur when looking at contour lines is to remember that if the ‘V’ points uphill it’s a valley, if it points downhill it’s a spur.

What’s the difference between a spur and a ridge? Ridge (Also: Arete or Spur) – A continuous elevated terrain with sloping sides. In the map represented by “U” or “V” shaped contour lines where the higher ground is in the wide opening. Arete is a narrow ridge and a Spur is a smaller ridge branching off a summit or a main ridge.

What is the difference between a draw and a spur? Draw — Sometimes called a “re-entrant,” a draw is a small valley. As with a valley, the Vs and Us of a draw’s contour lines point to higher ground. Spur — A spur is sloping high ground, often extending out from a ridge. As with a ridge, the Vs and Us of a spur’s contour lines point to lower ground.

What is a spur in land navigation? – Related Questions

How do you identify a spur on a topographic map?

A tongue of land, projecting from higher ground into the lower is called a spur. It is also represented by V- shaped contours but in the reverse manner. The arms of the V point to the higher ground and the apex of ‘V’ to the lower ones. It is a very steep or almost perpendicular face of landform.

What is a spur in the woods?

A spur is a lateral ridge or tongue of land descending from a hill, mountain or main crest of a ridge. It can also be defined as another hill or mountain range which projects in a lateral direction from a main hill or mountain range. Boott Spur, a subpeak of Mount Washington.

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 is a spur ridge?

A small ridge which extends finger-like from a main ridge.

What does a Depression look like on a topographic map?

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.

What shape are the contour lines that indicate a depression?

The rule of V and U-shaped valleys

Valleys are elongated low-lying depressions usually with a river flowing through it. You know that you’re looking at a valley bottom when contour lines are V or U-shaped. All rivers flow downhill from higher to the lower elevations, perpendicular to the contour line above it.

What are the 5 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 5 major terrain features?

The five major terrain features are: Hill, Ridge, Valley, Saddle, and Depression. The three minor terrain features are: Draw, Spur and Cliff. The two supplementary terrain features are: Cut and Fill.

How do you identify a spur?

The first image is how the back of your double socket should look and the second is the wiring for a spur. A general rule for a ring main is that if you only have two cables in the back of an existing socket then it is ok to spur.

Which map shows large amount of detail about a small area?

” A map showing a small area in detail is called a large scale map. Although, it shows a small area, but it shows it in detail. They are basically the guide maps or topographic maps. In these maps, cities, towns and villages can be shown in details.

What does a draw look like on a topographic map?

Draws are caused by flash floods and can be found on flat terrain but are more often found along the sides of ridges. Contour lines indicating a draw are shaped like a “V” with the point of the “V” toward the head of the draw (high ground).

Is Osteophyte a bone spur?

Osteophytes are bony lumps (bone spurs) that grow on the bones of the spine or around the joints. They often form next to joints affected by osteoarthritis, a condition that causes joints to become painful and stiff.

What is spur in writing?

Spurs are “actually the piece that extends from the curve in a letter. The best examples of these are the top and bottom of the “C” and “S”. Spurs are smaller than serifs and beaks, which makes this one of the smallest typography terms.” (

How does a spur work?

Spurs are designed to grant horse riders the ability to transmit subtle commands to their horse via pressure and strokes of a metal shank or rowel (see image above). Riders initiate spur commands by flexing their heel upwards and inwards slightly, pressing the metal element against the horse’s body.

How do you get contour lines?

For example if we want to make a contour map in 100.000 scale, then the contour interval will be 1/2000 x 100.000 = 50 m. Then the number of contour line will be: maximum elevation/contour interval. 3554/50=71 lines. When we set the calculated number, the contour interval can be seen in the right list.

What is the difference between two contour?

Two contour lines next to one another are separated by a constant difference in elevation (e.g. 20 ft or 100 ft.). This difference between contour lines is called the contour interval. Divide that difference by the number of contour lines between them, PLUS 1.

What is the space between 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 does a spur feel like?

Symptoms of heel spurs can include: sharp pain like a knife in the heel when standing up in the morning. a dull ache in the heel throughout the rest of the day. inflammation and swelling at the front of the heel.

What does a ridge look like on topo map?

A ridge is a long narrow section of higher ground with lower ground sloping away. On a topo map look for contour lines that form a “U” shape. The bottom of the U will be pointing downhill. Ridges may connect several hilltops or they may slope gradually down in one direction.

When someone wants to depict a depression in a contour map they use?

Contour lines are used in a map to portray differences in elevation. When contour lines are closer together on a map, they indicate a steep slope. Think of contour lines as the distance between each incline. On the other hand, the farther apart lines tend to indicate a depression in the landscape.

How are contour lines drawn on maps?

Contour lines are lines drawn on a map with equal elevation points, so elevation would be constant if you followed the contour line physically. The elevation and terrain shape of the contour lines shows. It is useful because they show the form of the land surface on the map–its topography.