1. Which air masses are dry, hot, and stable throughout the year?
- Maritime Polar Air Masses
- Maritime Tropical Air Masses
- Continental Polar Air Masses
- Continental Tropical Air Masses
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Answer: Continental Tropical Air Masses
Continental Tropical Air Masses are dry, hot, and stable throughout the year. They form over large landmasses in tropical and subtropical regions and bring hot and dry weather.
2. The source region of which among the following air masses is the oceans between 40° and 60° latitudes?
- Maritime Polar Air Masses
- Continental Polar Air Masses
- Maritime Tropical Air Masses
- Continental Tropical Air Masses
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Answer: Maritime Polar Air Masses
Maritime Polar Air Masses originate over the oceans between 40° and 60° latitudes. They have cool, moist, and unstable characteristics.
3. What is “Tropopause”?
- Inner layer of Earth’s crust
- Atmospheric boundary between the troposphere and the stratosphere
- Boundary between Equator and Tropic of Cancer and Tropic of Capricorn
- Outermost layer of Earth’s Atmosphere
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Answer: Atmospheric boundary between the troposphere and the stratosphere
Tropopause is the atmospheric boundary between the troposphere and the stratosphere. It is the transition layer located above 10-18 km above sea level, depending on the location.
4. Which air masses are characterized by dry, cold, and stable conditions?
- Maritime Polar Air Masses
- Continental Polar Air Masses
- Continental Tropical Air Masses
- Maritime Tropical Air Masses
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Answer: Continental Polar Air Masses
Continental Polar Air Masses are characterized by being dry, cold, and stable. They originate over landmasses in polar regions.
5. Which among the following regions is not associated with polar air masses?
- Northern Canada
- Sahara Desert
- Arctic Ocean
- Southern Ocean
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Answer: Sahara Desert
The Sahara Desert is not associated with polar air masses. It is known for its hot and arid conditions, making it more related to continental tropical air masses.
6. Which front is formed when two contrasting air masses converge in such a way that they become parallel to each other, and there is no ascent of air?
- Warm Front
- Cold Front
- Occluded Front
- Stationary Front
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Answer: Stationary Front
A stationary front is formed when two contrasting air masses converge but do not displace each other. They become parallel to each other, and there is no significant ascent of air. The position of a stationary front does not move forward or backward.
7. What is the front along which the cold air becomes active and aggressive and invades the warm air territory forcibly lifting the warm and light air?
- Warm Front
- Cold Front
- Occluded Front
- Stationary Front
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Answer: Cold Front
A cold front is the frontal surface along which cold air becomes active and forcefully displaces the warm air by lifting it. Cold fronts are often associated with bad weather conditions like thunderstorms and heavy rainfall.
8. What is the front along which warm and light air becomes active and aggressive and rises slowly over cold and dense air?
- Cold Front
- Warm Front
- Occluded Front
- Stationary Front
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Answer: Warm Front
A warm front is the sloping frontal surface along which warm and light air becomes active and gradually rises over cold and dense air. This frontal boundary is associated with gentle and prolonged precipitation.
9. What is the boundary zone when two different types of air masses meet called?
- Cyclone
- Rift
- Front
- Cloud
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Answer: Front
A front is the boundary zone where two different types of air masses meet and interact. It is the transition region between contrasting air masses.
10. Climatology- Air Masses, Fronts, Cyclones and Related Phenomena
- Cyclone
- Front
- Air mass
- Convective current
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Answer: Air mass
An air mass is a large body of air that exhibits uniform characteristics, such as temperature and humidity, over a horizontal extent. It behaves as a single unit due to its homogeneity.
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