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Question 12 Marks
Cyclones and Anticyclones:
Answer
CyclonesAnticyclones
(i) Cyclonic conditions are created when a low pressure area is surrounded by high pressure areas.(i) Anticyclonic conditions are created when a high pressure area is surrounded by low pressure areas.
(ii) The cyclonic winds move in an anticlockwise direction in the northern hemisphere and clockwise direction in the southern hemisphere.(ii) The anticyclonic winds move in a clockwise direction in the northern hemisphere and anticlockwise direction in the southern hemisphere.
(iii) The sky is cloudy.(iii) The skies are clear.
(iv) The velocity of wind is very high and cause rain.(iv) The velocity of wind is less and weather is pleasant.
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Question 22 Marks
Valley breeze and Mountain breeze:
Answer
Valley BreezeMountain Breeze
(i) Valley breeze blow during the day.(i) Mountain breeze blow during the night.
(ii) Winds blow from the valley to the mountain.(ii) Winds blow from the mountain to the valley.
(iii) Valley breeze blows because of the high pressure area created iin the valley.(iii) Mountain Breeze blows because of the high pressure area created on the mountains.
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Question 32 Marks
Easterlies and Westerlies:
Answer
EasterliesWesterlies
(i) Easterlies blow from mid latitudinal high pressure belt to equatorial low pressure belt in both the hemispheres(i) Westerlies blow from mid latitudinal high pressure belt to subpolar low pressure belt in both the hemispheres
(ii) In the northern hemisphere, they blow from the northeast to the southwest.(ii) In the northern hemisphere, they blow from the southwest to the northeast.
(iii) In the southern hemisphere, they blow from the southeast to the northwest.(iii) In the southern hemisphere, they blow from northwest to the southeast.
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Distinguish between - Geography STD 7 Questions - Vidyadip