Verified answer

Multiple choice questions :-

(1) Odisha was hit by a strong cyclone in the year

(a) 1993

(b) 1995

(c) 1997

(d) 1999 ✓

Reason : Orrisa was hit by a strong cyclone with the wind speed of 200 km/h on 18 October 1999.

(2) Air expands on

(a) heating ✓

(b) cooling

(c) both (a) and (b)

(d) None of these

Reason : Warm air expands and cold air contracts.

(3) The instrument we use to measure direction of wind is

(a) Wind vane

(b) Anemometer ✓

(c) Thermometer

(d) Barometer

Reason : The instrument we use to measure direction of wind is Anemometer.

(4) The unit knot is used to express

(a) wind direction

(b) wind speed ✓

(c) wind type

(d) None of these

Reason : The unit knot is used to express Wind Speed.

(5) Cyclones are associated with

(a) strong winds

(b) continuous rain

(c) storm surges

(d) All of these ✓

Reason : Cyclones are associated with strong winds, continuous rains and strom surge.

(6) The calm area in the centre of a cyclone is called

(a) Nose

(b) Eye ✓

(c) Mouth

(d) None of these

Reason : Nose and Mouth are not associated with cyclone. The calm area in the centre of a cyclone is called Eye.

(7) We do not feel the air pressure on us because

(a) it is very less

(b) it is present only below the ground

(c) pressure inside our body is equal to the atmospheric pressure ✓

(d) None of these

Reason : We do not feel the air pressure on us because the pressure inside our body is equal to the atmospheric pressure.

_________________________

Match the following :

• Column A :

(1) Anemometer

(2) Mercury Barometer

(3) Temperature difference

(4) Multiple vortex

(5) Cloud Burst

• Column B :

(a) Convection current

(b) Tornado

(c) Cumulonimbus cloud

(d) Wind speed

(e) Air pressure

Answer :

(1) - (d)

(2) - (e)

(3) - (a)

(4) - (b)

(5) - (c)