MAPPING SKILLS
IV. Answer in brief
1 What is a map?
• A Map is the basic
tool of a geographer. It is a Location guide.
• It illustrates the earth's surface clearly and effectively
through a combination of drawings, words and symbols.
2. What are the components of a
map?
The Components of a
map :
• Title
• Scale
• Direction
• Grid system
• Projection
• Legend
• Conventional and signs and Symbols
3. The distance between two
cities A and B is 5 km. It is represented by a line of 5 cm on the map.
Calculate the distance and give the answer in RF.
Distance on the map = 5 cm
Distance on the ground = 5 km
Representative Fraction (R.F) = Distance on the Map / Distance on the Ground
R.F = 5cm / 5km
= 5 cm / 500000 cm = 1 /
100000
So R.F = 1:100000
4. Mention a few surveying
instruments.
Surveying
Instruments:
Chain, Prismatic compass, Plane table, Dumpy level, Abney level,
Clinometre, Theodolite, Total Station and GNSS to measure the distance, angle,
altitude and position of the area of survey.
5- Define Remote sensing.
Remote Sensing :
• Remote Sensing refers to the observation and measurement of
earthly objects without touching them.
• 'Remote' means far
away and 'Sensing' means observing
or collecting information. Remote sensing means acquiring information of
things/places from a distance, using a variety of tools and methods.
6. What are the components of
remote sensing?
Components of
remote sensing:
• Energy Source
• Transmission path
• Target
• Sensor
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