Representation Of Geographical Features Through Contours Flashcards
What are topographical maps?
Topographical maps are large scale maps that shows us a small area in great details. Topographical maps represent relief and man made features to depict the colourful earth.
What are contour lines?
The imaginary lines drawn on a map joining places having the same height above the mean sea level are called contour lines.
What is contour index?
At every 100-m interval a thick brown contour lines, called contour index is drawn for calculating the height.
What is the purpose of survey instruments in mapping?
Survey instruments help to determine the heights above the ground.
Widely spaced contours depict
A gentle slope
Closly
Closely spaced contours depict?
A steep slope
What is the easiest ways to draw relief using a contour map?
Drawing cross sections
What is a conical hill?
A conical hill is represented by equally spaced contours and heights increasing towards the central circular contour.
The contours of a conical hill appears in _____
Concentric circles
The slopes of conical hill are ___
Equal in all directions
Which contour has the highest value?
The Central or innermost contour has the highest value showing the summit of the hill.
What is a plateau?
A plateau is a flat topped and steep edged highland. The innermost contour is very wide, which represents the flat table like top.
The edges of a plateau may have _____ spaces contours that depict steep slopes.
Closely
What is a ridge?
Ridge is a long, narrow sharp-edged upland with several peaks. The slopes may be steep or gentle.
What is a saddle?
Saddle is a shallow depression between two hills.
What is a col?
the lowest point on a mountain ridge between two peaks
What is a gap?
A gap is a low depression close to the ground.
What is a pass?
A pass is also a gap between two hills but it can be at a higher elevation.
Where do settlements usually flourish?
Settlements usually flourish near a river, in a plain where land is arable and easy to develop a wide network of transport systems.
Define arable
Land suitable for growing crops.
Various patterns of settlements are?
Linear settlements, nucleated settlements, and dispersed settlements
Why does linear settlements grow? When can they be found?
Linear settlements grow because of the advantage of transport and trade.
These patterns are noticed along a railway line, metalled road or river.
What is the other name of nucleated settlements? Where are they found?
Nucleated settlements are also known as Clustered settlements. They are often found in areas having too many opportunities.
Why do nucleated settlements portray economic prosperity?
They portray economic prosperity because various occupations are possible and several facilities are available.
List some facilities that are commonly found in nucleated settlements.
Common facilities include post offices, hospitals, police stations, temples, mosques, reservoirs, cemeteries, metalled roads, and railway stations.
Where can dispersed settlements be found?
This pattern is found in large farm areas with few residents and can also be seen in remote areas far from any favourable water source or fertile lands.
Topographical maps contain grid lines in ___, crisscrossing it. (Hint:- colour)
Red
What is the purpose of a grid square in a topographical map?
The grid squares are used to read the map and locate a feature on it.
What are eastings and northings?
Eastings are the north south running or vertical lines and northings are the east-west running or horizontal lines.
Which grid is the starting point/reference point for measurement?
The extreme south west grid or the one at the left bottom corner.
Eastings and northings are always given in __ digits.
Two
There are two types of grid reference. What are they?
Four-figure reference and the six-figure reference
What is the use of four-figure reference?
It is used to locate places that fall within a grid square.
What is the use of the six-figure grid reference?
It is used to locate objects with greater accuracy within the grid.
Jawar hill has an elevation of nearly _____m.
533m
What is knoll?
A small hill is known as knoll.
