7th Grade > Physics
WIND STORMS AND CYCLONES MCQs
Total Questions : 56
| Page 3 of 6 pages
Answer: Option B. -> Moving air
:
B
The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction is called wind, in simple words moving air is defined as wind.
:
B
The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction is called wind, in simple words moving air is defined as wind.
Answer: Option A. -> Indian Ocean
:
A
Southwest monsoon winds carries moisture from the Indian ocean because it is situated in the Southwest direction. These winds bring majority of the rainfall to India.
:
A
Southwest monsoon winds carries moisture from the Indian ocean because it is situated in the Southwest direction. These winds bring majority of the rainfall to India.
Answer: Option B. -> Expands
:
B
Air expands on heating. Hot air molecules have more kinetic energy, so theyhavemore space between them than cool air molecules. Therefore, when we heat air, it expands to allow more space for the molecules. If air is cooled, it contracts because cool air molecules have less kinetic energy.
:
B
Air expands on heating. Hot air molecules have more kinetic energy, so theyhavemore space between them than cool air molecules. Therefore, when we heat air, it expands to allow more space for the molecules. If air is cooled, it contracts because cool air molecules have less kinetic energy.
Answer: Option B. -> It is an area of low pressure
:
B
The centre or eye of a tropical cyclone is the area of lowpressure and is characterized by little or no wind. In severe cyclones, the eye usually shows up as a circular hole in the central cloud mass. The eye is usually about 40 km in diameter, but can vary from less than 10 km tomore than 100 km.
:
B
The centre or eye of a tropical cyclone is the area of lowpressure and is characterized by little or no wind. In severe cyclones, the eye usually shows up as a circular hole in the central cloud mass. The eye is usually about 40 km in diameter, but can vary from less than 10 km tomore than 100 km.
Answer: Option B. -> uneven
:
B
Windis air in motion. It is producedby uneven heating of theearth's surface by the sun. Since theearth's surface is made of land and water, it absorbs the sun's radiation unevenly.
:
B
Windis air in motion. It is producedby uneven heating of theearth's surface by the sun. Since theearth's surface is made of land and water, it absorbs the sun's radiation unevenly.
Answer: Option D. -> Cyclones
:
D
Acycloneis defined asa large volume of air mass that rotates around the centers of low pressure. This is usually characterized by inward spiraling winds that rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the earth.
:
D
Acycloneis defined asa large volume of air mass that rotates around the centers of low pressure. This is usually characterized by inward spiraling winds that rotate counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere of the earth.
Answer: Option C. ->
Amritsar
:
C
:
C
Cyclones largely affect the coastal regions. As it can be observed that all the places except Amritsar are on coastal area, Amritsar will not be affected.
Answer: Option C. ->
lift
:
A, B, and C
:
A, B, and C
The basic ingredients for a thunderstorm are moisture, unstable air and lift. We need moisture to form clouds and rain. We need unstable air which is relatively warm and can rise rapidly. Finally, we need a lift. This comes from fronts, sea breezes or mountains.
Answer: Option B. ->
rain
:
B
:
B
The winds carrying water vapour brings rain. Rain is the liquid water in the form of droplets that have condensed from atmospheric water vapor and then precipitated.
Answer: Option A. ->
Earthquake
:
A
Thunderstorms are usually associated with winds at high speed, lightning and rain. Earthquake is an altogether different phenomenon related with Earth's tectonic plate movements.
:
A
Thunderstorms are usually associated with winds at high speed, lightning and rain. Earthquake is an altogether different phenomenon related with Earth's tectonic plate movements.
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