Topography

Question 1

Yellow color:

Answer 1

Cultivated Land

Question 2

Green color:

Answer 2

Natural vegetation

Question 3

Blue color:

Answer 3

Perennial Water Source

Question 4

White color:

Answer 4

Barren Land

Question 5

Black color:

Answer 5

Railway lines, Seasonal Streams/tanks, Latitudes & Longitudes, heights, political boundaries.

Question 6

Red color:

Answer 6

Settlements, Huts, Roads, Man-made features, Grids

Question 7

Brown color:

Answer 7

Contours, Reliefs, Sand Dunes, Sandy Soil.

Question 8

How do you find 4 figure grid reference?

Answer 8

Easting to the left and Northing down, EENN.

Question 9

How do you find 6 figure grid reference?

Answer 9

Easting to the left, distance from easting to point in millimeters divided by 2, Northing down, distance from northing down to point in millimeters divided by 2, EEENNN.

Question 10

What are the 8 directions in a compass?

Answer 10

N, S, E, W, NE, NW, SE, SW.

Question 11

What does bearing mean?

Answer 11

Direction

Question 12

What are contours?

Answer 12

They are imaginary lines that join places having the same height above sea level in meters. (Brown in color)

Question 13

What are trigonometrical or triangulation stations?

Answer 13

Shown with a small triangle, mark the corners of a triangle on the ground marked out for surveys.

Question 14

What is benchmark height?

Answer 14

Benchmark indicates height above sea level in meters determined by levelling.

Question 15

What are spot heights?

Answer 15

Spot heights show the height of a point above sea level in meters generally along roads, between contours and near the sea level to study relief features.

Question 16

What is relative height and depth?

Answer 16

It is symbolized by the letter “r”. Relative height indicates the height of a feature in meters from the base to top of the feature and not from the mean sea level. Examples: Bank height, embankment, sand dunes, steep slope.

Question 17

Col:

Answer 17

A depression between two peaks of a ridge.

Question 18

Saddle:

Answer 18

Similar to a col but higher, broader and gently sloping from the peaks of a ridge.

Question 19

Ridge:

Answer 19

A long stretch of upland with steep slopes.

Question 20

Linear Ridge:

Answer 20

A long and narrow continuous upland with steep slopes.

Question 21

Watershed:

Answer 21

A line running along the highest points of a ridge.

Question 22

Vertical Rock Cliffs:

Answer 22

The slopes are nearly vertical and is shown with contours which merges.

Question 23

Conical Hills:

Answer 23

Shown with contours run nearly circular becoming smaller and smaller near the summit.

Question 24

Escarpment:

Answer 24

Is a landform with sides sloping in opposite directions with a steep scarp slope and a gentle dip slope.

Question 25

Sheltered Valley:

Answer 25

It is surrounded by ridges or hills and is protected from hot scorching sand laden winds.

Question 26

Valley:

Answer 26

A long depression created by the erosional activity of a river.

Question 27

Spur:

Answer 27

Projection of a land from higher to lower ground.

Question 28

Valleys and spurs occur alternately in _______________.

Answer 28

Highland Regions

Question 29

Sheet Rock:

Answer 29

Exposed bedrock, which is generally horizontal in structure.

Question 30

Rock Outcrop:

Answer 30

Exposed bedrock with vertical structure and overhangs.

Question 31

Rock Knob:

Answer 31

Small hills rounded due to erosion, generally single or isolated, indicated by round contour circles on the map.

Question 32

Depression:

Answer 32

Indicated by "dep", are shallow hollows covering a large area.

Question 33

Broken Ground:

Answer 33

Indicated by curved black lines.

Question 34

Sand Dunes:

Answer 34

Indicated by brown dots.

Question 35

River Islands:

Answer 35

White patches with black outline.

Question 36

Sandy Beds:

Answer 36

Shown with black dots.

Question 37

Drainage Patterns:

Answer 37

Dendritic, Trellis, Radial.

Question 38

Disappearing Streams:

Answer 38

Indicated by black broken lines.

Question 39

Occupations:

Answer 39

Yellow land: Agriculture Green land: Animal Rearing Large settlement: Government Services Large lake: Fishing Metalled road: Trade