Answer in brief

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