Air masses Fronts and Western Disturbances

Question 1

The airmass which originates at sea in high Latitudes is called

Answer 1

> (a) Polar maritime
(b) Tropical continental
(c) Tropical maritime

Question 2

The airmass which originates over equatorial region is

Answer 2

(a) Warm and dry
>(b) Warm and Moist
(c) Cold and dry

Question 3

If the advancing cold front is colder than the cool air mass of the warm front, the advancing cold front undercuts and lifts both the warm and cool air masses of the warm front. This is

Answer 3

(a) Warm Occlusion
>(b) Cold Occlusion

Question 4

The airmass which originated over land area located in polar region is:

Answer 4

(a) Warm and dry
(b) Warm and Moist
>(c) Cold and dry

Question 5

If a warm airmass overtakes a cold air mass, it is called

Answer 5

(a) Cold Front
>(b) Warm Front
(c) Occluded Front

Question 6

At warm front

Answer 6

> (a) Warm air overtakes the cold air
(b) Cold air undercuts the warm air

Question 7

The conditions are always unstable at a

Answer 7

> (a) Cold front
(b) Warm front

Question 8

Sometimes Line squall occurs about 100-300 km ahead of a

Answer 8

(a) Warm front
>(b) Cold front

Question 9

Precipitation occurs over a belt of 30 - 50 km on both side of ….. front

Answer 9

> (a) Cold front
(b) Warm front

Question 10

Cold front moves at …….. the speed of a warm front moves

Answer 10

(a)Same
>(b)Double
(c) Half

Question 11

Line Squalls occur ………. of Cold front

Answer 11

> (a)Ahead
(b) Behind
(c) At the

Question 12

Fronts are associated with

Answer 12

(a) Tropical cyclone
(b) Monsoon Depression
>(c) Extra-tropical Cyclones

Question 13

CB, Roll-type clouds, SC, AC with embedded CB are associated

Answer 13

> (a) Cold front
(b) Warm front

Question 14

The surface of discontinuity between the Polar Ely and the temperate WIy is called

Answer 14

(a) Equatorial Front
(b) Tropopause
>(c) Polar Front

Question 15

The air mass which originates from sea area located in lower Lat is

Answer 15

(a) Warm and Dry
>(b) Warm and Moist
(c) Cold and Moist

Question 16

WDs approach India as

Answer 16

(a) Cols
>(b) Occluded Fronts
(c) Highs

Question 17

Maximum WDs occur in

Answer 17

(a) Summers
(b) Post Monsoon
>(c) Winters

Question 18

Ahead of a warm front the surface wind

Answer 18

(a) Backs & weakens
>(b) Veers & strengthens
(c) Backs & strengthens

Question 19

On approach of a Warm Front temperature

Answer 19

(a) Fall
>(b) Rise
(c) Remain same

Question 20

CI, CS, AS, NS, ST in sequence are associated with the front

Answer 20

> (a) Warm
(b) Cold
(c) Occluded

Question 21

During the passage of a Cold Front winds

Answer 21

> (a) Suddenly become squally
(b) Back and weaken
(C) Veer and are of moderate strength

Question 22

Visibility is poor in a Warm Front

Answer 22

(a) Ahead
>(b) Ahead & During
(c) After & During

Question 23

Fog occurs in Cold Front
(a) Ahead
(b) During
(c) After

Answer 23

(a) Ahead
(b) During
>(c) After

Question 24

WD is a ………. front

Answer 24

(a) cold
(b) Warm
>(c) Occluded

Question 25

FZRA and FZFG occur ……… of a warm front

Answer 25

> (a) Ahead
(b) During
(c) After

Question 26

Precipitation ceases after the passage of a front

Answer 26

(a) Cold
>(b) Warm
(c) Occluded

Question 27

During the approach of a Warm Front wind

Answer 27

> (a) Backs
(b) Veers
(c) Does not change

Question 28

A WD with two or more closed isobars, at 2 hPa interval, it is termed as

Answer 28

(a) Troughs in Westerlies
>(b) Western Depression
(c) Western Cyclone

Question 29

A WD originate over

Answer 29

(a) Baluchistan
(b) Caspian sea
>(c) Mediterranean, Caspian and Black Seas

Question 30

Induced lows develop to the …….. of a WD

Answer 30

(a) N
>(b) S
(c) NE