Climate and Weather MCQs
Practice Climate and Weather MCQs with answers and detailed explanations covering climate, weather, monsoons, rainfall, temperature, humidity, atmospheric pressure, winds, cyclones, seasons and important climatic phenomena frequently asked in SSC, Railway, Banking, UPSC, JKSSB, Police, Defence, Teaching and other competitive examinations.
Question #161
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What is the name of the phenomenon where the wind direction changes with altitude?
Correct Answer: Option C
Explanation:
Wind shear is the change in wind speed and/or direction with altitude. It is an important factor in aviation and weather forecasting, especially for thunderstorm development.
Wind shear is the change in wind speed and/or direction with altitude. It is an important factor in aviation and weather forecasting, especially for thunderstorm development.
This question belongs to:
Geography GK
Climate and Weather
Question #162
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What is the name of the phenomenon where the wind direction changes clockwise with altitude in the Northern Hemisphere?
Correct Answer: Option C
Explanation:
Wind veering is a clockwise change in wind direction with altitude in the Northern Hemisphere (e.g., from south to west). Wind backing is a counterclockwise change. Veering typically indicates warm air advection.
Wind veering is a clockwise change in wind direction with altitude in the Northern Hemisphere (e.g., from south to west). Wind backing is a counterclockwise change. Veering typically indicates warm air advection.
This question belongs to:
Geography GK
Climate and Weather
Question #163
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What is the name of the phenomenon where the wind direction changes counterclockwise with altitude in the Northern Hemisphere?
Correct Answer: Option A
Explanation:
Wind backing is a counterclockwise change in wind direction with altitude in the Northern Hemisphere (e.g., from south to east). Backing typically indicates cold air advection.
Wind backing is a counterclockwise change in wind direction with altitude in the Northern Hemisphere (e.g., from south to east). Backing typically indicates cold air advection.
This question belongs to:
Geography GK
Climate and Weather
Question #164
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What is the name of the phenomenon where the wind speed changes with altitude?
Correct Answer: Option C
Explanation:
Wind gradient is the change in wind speed with altitude. Near the surface, friction reduces wind speed; at higher altitudes, wind speed generally increases.
Wind gradient is the change in wind speed with altitude. Near the surface, friction reduces wind speed; at higher altitudes, wind speed generally increases.
This question belongs to:
Geography GK
Climate and Weather
Question #165
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A positive Indian Ocean Dipole event is associated with:
Correct Answer: Option C
Explanation:
A positive IOD event is characterized by warmer than normal sea surface temperatures in the western Indian Ocean and cooler than normal in the east. This often leads to increased rainfall over East Africa and reduced rainfall over Indonesia and Australia.
A positive IOD event is characterized by warmer than normal sea surface temperatures in the western Indian Ocean and cooler than normal in the east. This often leads to increased rainfall over East Africa and reduced rainfall over Indonesia and Australia.
This question belongs to:
Geography GK
Climate and Weather
Question #166
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A negative Indian Ocean Dipole event is associated with:
Correct Answer: Option A
Explanation:
A negative IOD event is characterized by warmer than normal sea surface temperatures in the eastern Indian Ocean and cooler than normal in the west. This often leads to increased rainfall over Indonesia and Australia and reduced rainfall over East Africa.
A negative IOD event is characterized by warmer than normal sea surface temperatures in the eastern Indian Ocean and cooler than normal in the west. This often leads to increased rainfall over Indonesia and Australia and reduced rainfall over East Africa.
This question belongs to:
Geography GK
Climate and Weather
Question #167
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The term 'Indian Ocean Dipole' was first used by which scientist?
Correct Answer: Option C
Explanation:
The term Indian Ocean Dipole was introduced by N. Saji and T. Yamagata in 1999. Sir Gilbert Walker is known for the Southern Oscillation, J. Bjerknes for ENSO theory, and H. H. Lamb for climate studies.
The term Indian Ocean Dipole was introduced by N. Saji and T. Yamagata in 1999. Sir Gilbert Walker is known for the Southern Oscillation, J. Bjerknes for ENSO theory, and H. H. Lamb for climate studies.
This question belongs to:
Geography GK
Climate and Weather
Question #168
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What is the name of the phenomenon where there is a reversal of the surface winds and ocean currents in the Indian Ocean?
Correct Answer: Option C
Explanation:
The Indian Ocean Dipole involves changes in sea surface temperatures and wind patterns across the Indian Ocean, leading to reversals in surface winds and currents during positive and negative phases.
The Indian Ocean Dipole involves changes in sea surface temperatures and wind patterns across the Indian Ocean, leading to reversals in surface winds and currents during positive and negative phases.
This question belongs to:
Geography GK
Climate and Weather
Question #169
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Which of the following is a major factor in the formation of the Madden-Julian Oscillation (MJO)?
Correct Answer: Option B
Explanation:
The Madden-Julian Oscillation is a large-scale pattern of convection (thunderstorm activity) that originates over the Indian Ocean and moves eastward across the Pacific, influencing weather patterns globally.
The Madden-Julian Oscillation is a large-scale pattern of convection (thunderstorm activity) that originates over the Indian Ocean and moves eastward across the Pacific, influencing weather patterns globally.
This question belongs to:
Geography GK
Climate and Weather
Question #170
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The Madden-Julian Oscillation (MJO) has a typical period of:
Correct Answer: Option A
Explanation:
The Madden-Julian Oscillation (MJO) has a typical period of 30 to 60 days, making it an intra-seasonal tropical climate pattern that significantly influences weather in the tropics and subtropics.
The Madden-Julian Oscillation (MJO) has a typical period of 30 to 60 days, making it an intra-seasonal tropical climate pattern that significantly influences weather in the tropics and subtropics.
This question belongs to:
Geography GK
Climate and Weather
Question #171
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The Madden-Julian Oscillation (MJO) is characterized by:
Correct Answer: Option D
Explanation:
The MJO is characterized by an eastward-moving pattern of enhanced and suppressed convection (thunderstorms) across the Indian and Pacific Oceans, influencing rainfall and wind patterns.
The MJO is characterized by an eastward-moving pattern of enhanced and suppressed convection (thunderstorms) across the Indian and Pacific Oceans, influencing rainfall and wind patterns.
This question belongs to:
Geography GK
Climate and Weather
Question #172
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What is the primary driver of the Madden-Julian Oscillation?
Correct Answer: Option B
Explanation:
The MJO is driven by large-scale atmospheric convection and circulation processes involving the interaction between the ocean and atmosphere, with the propagation of convective systems.
The MJO is driven by large-scale atmospheric convection and circulation processes involving the interaction between the ocean and atmosphere, with the propagation of convective systems.
This question belongs to:
Geography GK
Climate and Weather
Question #173
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Which of the following is a major factor in the formation of the North Atlantic Oscillation (NAO)?
Correct Answer: Option A
Explanation:
The North Atlantic Oscillation (NAO) is a climate pattern characterized by sea level pressure differences between the Icelandic Low (subpolar low) and the Azores High (subtropical high).
The North Atlantic Oscillation (NAO) is a climate pattern characterized by sea level pressure differences between the Icelandic Low (subpolar low) and the Azores High (subtropical high).
This question belongs to:
Geography GK
Climate and Weather
Question #174
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A positive phase of the North Atlantic Oscillation (NAO) is associated with:
Correct Answer: Option A
Explanation:
A positive NAO phase is characterized by stronger than normal Azores High and Icelandic Low, leading to stronger westerly winds, milder and wetter winters in northern Europe, and colder and drier winters in southern Europe.
A positive NAO phase is characterized by stronger than normal Azores High and Icelandic Low, leading to stronger westerly winds, milder and wetter winters in northern Europe, and colder and drier winters in southern Europe.
This question belongs to:
Geography GK
Climate and Weather
Question #175
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A negative phase of the North Atlantic Oscillation (NAO) is associated with:
Correct Answer: Option B
Explanation:
A negative NAO phase is characterized by weaker than normal Azores High and Icelandic Low, leading to weaker westerly winds, colder and drier winters in northern Europe, and milder and wetter winters in southern Europe.
A negative NAO phase is characterized by weaker than normal Azores High and Icelandic Low, leading to weaker westerly winds, colder and drier winters in northern Europe, and milder and wetter winters in southern Europe.
This question belongs to:
Geography GK
Climate and Weather
Question #176
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The NAO influences the climate of which region?
Correct Answer: Option A
Explanation:
The North Atlantic Oscillation primarily influences the climate of Western Europe and the eastern United States and Canada, affecting temperature, precipitation, and storm tracks.
The North Atlantic Oscillation primarily influences the climate of Western Europe and the eastern United States and Canada, affecting temperature, precipitation, and storm tracks.
This question belongs to:
Geography GK
Climate and Weather
Question #177
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What is the name of the phenomenon where there is a large-scale pattern of sea level pressure differences between the Arctic and the mid-latitudes?
Correct Answer: Option B
Explanation:
The Arctic Oscillation (AO) is a large-scale climate pattern of sea level pressure differences between the Arctic and the mid-latitudes of the Northern Hemisphere. It affects weather patterns across the entire Northern Hemisphere.
The Arctic Oscillation (AO) is a large-scale climate pattern of sea level pressure differences between the Arctic and the mid-latitudes of the Northern Hemisphere. It affects weather patterns across the entire Northern Hemisphere.
This question belongs to:
Geography GK
Climate and Weather
Question #178
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A positive phase of the Arctic Oscillation (AO) is associated with:
Correct Answer: Option D
Explanation:
A positive AO phase is characterized by lower than normal pressure over the Arctic and higher than normal pressure over the mid-latitudes. This tends to confine cold air to the Arctic, leading to milder winters in the mid-latitudes.
A positive AO phase is characterized by lower than normal pressure over the Arctic and higher than normal pressure over the mid-latitudes. This tends to confine cold air to the Arctic, leading to milder winters in the mid-latitudes.
This question belongs to:
Geography GK
Climate and Weather
Question #179
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A negative phase of the Arctic Oscillation (AO) is associated with:
Correct Answer: Option A
Explanation:
A negative AO phase is characterized by higher than normal pressure over the Arctic and lower than normal pressure over the mid-latitudes. This allows cold Arctic air to spill southward, leading to colder winters in the mid-latitudes.
A negative AO phase is characterized by higher than normal pressure over the Arctic and lower than normal pressure over the mid-latitudes. This allows cold Arctic air to spill southward, leading to colder winters in the mid-latitudes.
This question belongs to:
Geography GK
Climate and Weather
Question #180
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The Pacific-North American (PNA) pattern is a climate pattern that affects:
Correct Answer: Option C
Explanation:
The Pacific-North American (PNA) pattern is a climate pattern that affects the western United States and Canada, influencing temperature, precipitation, and storm tracks across the region.
The Pacific-North American (PNA) pattern is a climate pattern that affects the western United States and Canada, influencing temperature, precipitation, and storm tracks across the region.
This question belongs to:
Geography GK
Climate and Weather
