what is a spur in geography
What Is A Spur In Geography?
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. Examples of spurs include: … Geneva Spur on Mount Everest.
What is a spur on a contour map?
A spur is formed between two river valleys. In the case of a river valley, the greatest height is to the outer side and the land sinks down towards the inner side, where the riverbed is. In the case of a spur, the greatest height is to the inner side and the land sinks down towards the outer side of the spur.How is a spur formed in geography?
Spurs and Interlocking Spurs. Spurs, and interlocking spurs, are features found in the upper reaches of river valleys. They are erosional features, meaning that they are formed by water flowing over the land and eroding it as it moves. Imagine two gently sloping hillsides forming the sides of a small valley.
What is spur in surveying?
Spur A tongue of land, projecting from higher ground into the lower is called a spur.
What’s the difference between ridge and spur?
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. See also how many cubs can a lion haveHow do you identify 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. However, if you have a radial circuit with two cables coming in and out, this may be the last socket on that circuit and already has a spur.What is a spur electrical?
A fused spur is a switch that’s used to isolate electrical equipment from the mains supply. You’ll typically find them on the left or right of your oven or hob, and next to or underneath your heater.What are interlocking spurs and how are they formed?
Interlocking spurs are projections of high land that alternate from either side of a V-shaped valley. They are formed by fluvial erosion and are found in the upper course of a river where rocks are hard. Formed when the river is small and has less erosive power.
Where are truncated Spurs found?
Truncated spurs can be found within mountain ranges, along the walls of river valleys, or along coastlines. A faceted spur is also a spur that ends in a triangular face, known as a triangular facet, with a broad base and an apex pointing upward.What is the steepest part of a river?
The steepest gradient in the long profile of a river is found in the upper course near to the source.
What is relief in geography?
Relief is typically defined as the difference in height between the high point and the low point on a landscape, in feet or in meters. It could also be defined more qualitatively: like “low relief plains” or “high relief rolling hills”.What are the height lines on a map called?
Contour lines are added to a map to show height and gradient. On OS maps they are shown as thin orange or brown lines, some of which have the land height written on them. The lines join areas of equal height: Contour lines that are close together show land that increases or decreases in height quickly.
How do you show hills on a flat map?
How do you show hills on a flat map?- Hachures: A short line on a map that indicates the direction of slope.
- Hill-shading: Shadows drawn on the map to create a three-dimensional effect.
- Contours: A line on a map that connects points of equal height.
What is the difference between a draw and a valley?
The area of low ground itself is the draw, and it is defined by the spurs surrounding it. Draws are similar to valleys on a smaller scale; however, while valleys are by nature parallel to a ridgeline, a draw is perpendicular to the ridge, and rises with the surrounding ground, disappearing up-slope.What is a ridgeline in geography?
noun. a line formed along the highest points of a mountain ridge. an area of higher ground separating two adjacent streams or watersheds.
What is a saddle in terrain?
saddle. A saddle is the bottom of the slope between two hills. The yellow areas represent the knobs or peaks of two hills.
How many Spurs are on a radial circuit?
Unfused spurs off a 30/32 A radial. One single or one twin using 2.5 mm sq. As many as you want using 4.0 mm sq. Fused spurs – as many sockets as you want but remember the maximum 13A fuse in the spur!
How do I know if I have a ring or radial circuit?
Undo the Live (RED) terminal and remove the two red wires, now using a multi meter switch it to OHMS and place one of the leads on each of the red wires or use a continuity tester, the meter should read Zero or very low resistance, some meters will emit a bleep also, this means that there is a circuit there and that it … See also what is the only thing to go beyond the limits of our universe ?How many Spurs come in a junction box?
Each socket outlet or junction box on the ring can only have one spur connected.What is an unfused spur?
An unfused spur consists of a conductor, of suitable current-carrying capacity, connected to the terminals of the circuit’s overcurrent protective device in the consumer unit, or directly to either the terminals of an accessory such as a socket-outlet or a junction box without further overcurrent protection being …Is a fused spur double pole?
A double pole fused spur is a type of fused switch which isolates both the live and neutral wires within the device when the button is pressed and the socket is switched off. This provides an additional level of safety.Does a spur need to be fused?
“The regulations state that the appliance needs to be fused, either with a plug or a fused spur. … So as long as the plug sockets are accessible without touching the appliance to turn it off then this is fine, but also a fused spur is fine too.”
What is an interlocking spur in geography?
An interlocking spur, also known as an overlapping spur, is one of any number of projecting ridges that extend alternately from the opposite sides of the wall of a young, V-shaped valley down which a river with a winding course flows.How are interlocking spurs formed GCSE geography?
Interlocking spurs
The river cuts down into the valley.If there are areas of hard rock which are harder to erode, the river will bend around it. This creates interlocking spurs of land which link together like the teeth of a zip.
Why are interlocking spurs formed?
As the river erodes the landscape in the upper course, it winds and bends to avoid areas of hard rock. This creates interlocking spurs, which look a bit like the interlocking parts of a zip. When a river runs over alternating layers of hard and soft rock, rapids and waterfalls may form.
What is plucking in geography?
Plucking occurs when rocks and stones become frozen to the base or sides of the glacier and are plucked from the ground or rock face as the glacier moves. This leaves behind a jagged landscape. … This causes the wearing away of the landscape as the glacier behaves like sandpaper.
What does hanging valley mean in geography?
A hanging valley is a smaller side valley left ‘hanging’ above the main U-shaped valley formed by a tributary glacier. A waterfall can often be seen. During glaciation the smaller side valley contains less ice than the main glacial valley, which is why it is not as deeply eroded.
How is a corrie lip formed?
The glacier moves out of the hollow in a circular motion called rotational slip . Due to less erosion at the front of the glacier a corrie lip is formed. After the glacier has melted a lake forms in the hollow. This is called a corrie lake or tarn.
Why are waterfalls in the upper course?
In the upper course of a river gradients are steep and river channels are narrow. Vertical erosion is greatest in the upper course of a river. … As the river or stream wears away the weak rocks, they travel across the surface of stronger rocks. These more resistant rocks become the capstones to waterfalls. See also what is it in a wrinkle in timeWhat is the valley of a river?
Valleys are defined as the low lying areas of land between hills or mountains, normally with a river or some sort of water course running through them. River valleys are commonly V-shaped, narrow and steeper near to the river’s source but become U-shaped, wide and flatter as the river works its way down to sea level.
What is the starting point of a river called?
The place where a river begins is called its source. River sources are also called headwaters. Rivers often get their water from many tributaries, or smaller streams, that join together. The tributary that started the farthest distance from the river’s end would be considered the source, or headwaters.
What does contour mean in geography?
Definition: Contours are a collection of lines found on maps that show mountains, valleys and landforms. Contours are measured from sea level. … Contours can be used to understand the map and to know where land will be steep or flat.
