Orienteering Lines – A series of parallel lines located on floor of compass dial. These lines are used when aligning a compass to a map.
What is the main purpose of the orienteering lines on a compass quizlet?
Terms in this set (6)
You line up the needle inside so that you know which direction you have to travel if choosing a specific bearing.
What are the orienting lines on a compass?
Orienting arrow: Used to orient the bezel, it has an outline shaped to exactly fit the magnetized end of the needle. Orienting lines: Parallel lines that rotate with the bezel; correctly aligning these with the north-south lines on a map aligns your orienting arrow with north.
What do the lines on a compass mean?
The index line is used to set the compass for an azimuth or bearing. 5. Magnetic needle floats inside the compass housing. The arrow is magnetized so that the red end always orients itself toward the magnetic north pole.
Why are there two lines on a compass?
Notice the second line of numbers surrounding the outside of the dial goes from 0 to 360 degrees to represent a full circle. That provides a more accurate direction. Saying an object is at 340 degrees Northwest is more accurate than saying it is Northwest.
Orienteering is a cross-country race in which participants navigate between checkpoints along a specified course (unfamiliar course, generally) using map and compass. What is Orienteering? Orienteering is a sport in which orienteers use an accurate, detailed map and a compass to find points in the landscape.
What is one of the main purposes of a topographic map?
Topographic maps have a horizontal scale to indicate horizontal distances. People use topographic maps to locate surface features in a given area, to find their way through a particular area, and to determine the direction of water flow in a given area.
How is orienteering played?
Orienteering involves competitive navigation along a course, using a map and compass. Competitors find their way from checkpoint to checkpoint (called controls) in the shortest time possible. So they must decide on the best route and then make it there without getting lost.
What is the important part of a compass?
The most important part on the compass is the magnetic needle. It swings around the compass as you move, but the red end will always point in the direction of north and the white (or sometimes black) end will always point in the direction of south.
What type of map is most commonly used in orienteering?
An orienteering map is a map specially prepared for use in orienteering competitions. It is a topographic map with extra details to help the competitor navigate through the competition area.
What are the important parts of a compass geometry?
- Handle. The handle, a small knurled rod above the hinge, is usually about half an inch long. …
- Legs. There are two types of leg in a pair of compasses: the straight or the steady leg and the adjustable one. …
- Hinge. …
- Needle point. …
- Pencil lead. …
- Adjusting nut.
What are the 3 main parts of the compass?
As figure 1 shows an orienteering compass typically consists of three main parts: a magnetic needle, a revolving compass housing, and a transparent base plate. The magnetic needles north end is painted red and its south end white.
How does a compass work simple explanation?
A compass points north because all magnets have two poles , a north pole and a south pole, and the north pole of one magnet is attracted to the south pole of another magnet. (You may have seen this demonstrated by a pair of simple bar magnets or refrigerator magnets pushed end to end.)
What determines the route taken in orienteering?
Given a choice of route, the competitor evaluates trade-offs among such factors as distance, amount of “climb” (vertical movement), degree and extent of “fight” (travel through obstructing vegetation), mode of travel, technical difficulty, and the competitor’s own preferences.
What do contour lines on a topographic map?
Contour lines are the main characteristics of a map. Contour lines are lines drawn on a map with equal elevation points, so elevation would be constant if you followed the contour line physically. … It is useful because they show the form of the land surface on the map–its topography.
What is the main purpose of a topographic map quizlet?
A map that shows the shape of the ground as well as location and elevation using lines.
What is one of the main purposes of a topographic map quizlet?
shows the surface features, or topography of Earth or a certain area.
What is solid state compass?
Solid-state compasses contain small, magnetic field sensors that provide data for an integral microprocessor. A fluxgate compass is a simple electromagnetic device that consists of two wires wrapped around a core of highly-permeable magnetic materials.
What is a baseplate compass?
The foundation of a map-worthy compass and is the clear plastic that houses the actual compass and has straight edges and scales or rulers for use with maps.
Why orienteering is a sport?
Orienteering is often called the “thinking sport” because it involves map reading and decision-making in addition to a great workout. … The competitive athlete can experience the exhilaration of running through the woods at top speed, while the non-competitive orienteer can enjoy the forest at a more leisurely pace.
What is the best compass for orienteering?
The best compass for orienteering is the Suunto MC-2G Navigator, which in our opinion is the most accurate model we have trialed. The MC-2G has a large mirror with sighting hole, luminous bezel ring, and a global needle, enabling it to be used anywhere in the world.
What is the line on a compass called?
The index line fixed within the outer edge of the compass housing as an extension of the direction of travel arrow. It marks the bearing you set by rotating the compass housing.
When did orienteering begin?
Introduced in Sweden in 1918, orienteering had its first success in Scandinavia but later spread throughout Europe, culminating in the establishment of an International Orienteering Federation in 1961, with European championships held from 1962 and world championships from 1966.
What is the point of a compass called?
The four principal points of the compass–north, east, south, and west–are called the cardinal points. Midway between the cardinal points are the intercardinal points–northeast, southeast, southwest, and northwest.
Why is a compass called a compass?
The compass was invented more than 2000 years ago. … It was originally called the “South Pointing Fish” The compass was later used for navigation during the Chinese Song Dynasty (960–1279 AD), as described by Shen Kuo. Later compasses were made of iron needles, magnetized by striking them with a lodestone.
Why is a drawing compass called a compass?
A technical drawing tool named drawing compass is used to draw circles or arcs. This tool is also known as a pair of compasses, or simply as a compass. … Drawing compass has two parts connected by a hinge so the radius of the circle that is drawn can be adjusted and changed.
Why does a compass draw a circle?
As a compass has two arms, one arm holds a pencil while the other arm has a pointed end. A compass is designed for the users to grip it between their thumb and pointer finger. … If we keep the arms of the compass apart, it is easier to construct a circle or arc with a greater radius.
What are the four main points on a compass called?
cardinal direction
one of the four main points of a compass: north, east, south, west.
What are the 4 main points of direction called?
North, east, south, and west are the four cardinal directions, often marked by the initials N, E, S, and W. East and west are at right angles to north and south.