More Questions on Atmosphere
- Q. Transfer of surplus heat from the lower latitudes to higher latitudes is done by : I. ocean currents II. planetary winds III. tides IV. waves
A)I and IV
B)I and II
C)III and IV
D)II and III
Answer: I and II
- Q. The phenomenon of ‘trade winds’ takes place due to
A)Radiation
B)Conduction of heat
C)Convection of heat
D)None of the above
Answer: Convection of heat
- Q. Which of the following is/are characteristic of a depression in the southern hemisphere? I. It is a mass of air whose isobars form an oval or circular shape II. Pressure is high in the centre and decreases towards the outside III. Air moves anti-clockwise
A)I and III
B)I only
C)II only
D)All three
Answer: I only
- Q. Compared to other slopes in the northern hemisphere which is the warmest?
A)North facing
B)East facing
C)South facing
D)West facing
Answer: South facing
- Q. Very strong and cold icy winds that blow in the Polar regions are called ________
A)Blizzards
B)Typhoons
C)Tornadoes
D)Polar winds
Answer: Blizzards
- Q. The total number of layers above Earth are
A)2
B)4
C)5
D)3
Answer: 5
- Q. Atmospheric humidity is measured by ________
A)Lysimeter
B)Psychrometer
C)Anemometer
D)Hydrometer
Answer: Psychrometer
- Q. A sudden fall in the barometric reading indicates ________
A)Fine weather
B)Rain
C)Storm
D)Extreme cold
Answer: Storm
- Q. The amount of actual water vapour of air is known as ________
A)Relative humidity
B)Absolute humidity
C)Dew point
D)Condensation point
Answer: Absolute humidity
- Q. The most important factor in thunderstorms development is ________
A)Abundance of moisture
B)Atmospheric stability
C)Atmospheric instability
D)Temperature inversion
Answer: Atmospheric instability
- Q. What is true with regard to Jet Streams? 1. High velocity winds 2. Blow from west to east 3. Blow in upper troposphere near the tropopause 4. Blow in the mesosphere
A)1, 2 and 3
B)2 and 3
C)2 and 4
D)1, 2 and 4
Answer: 1, 2 and 3
- Q. Winds and air currents differ in the aspect that ________
A)The winds blow on lands while air currents blow over seas and oceans
B)Air currents blow much faster than winds
C)Air currents are always moisture laden while the winds are usually dry
D)Winds are horizontal movements of air while air currents are the vertical movements of air
Answer: Winds are horizontal movements of air while air currents are the vertical movements of air
- Q. When the relative humidity is 50% and air temperature is 30°C, a cooling of air mass ________
A)Decreases the relative humidity
B)Raises the absolute humidity
C)Produces no change in relative humidity
D)Increases the relative humidity
Answer: Decreases the relative humidity
- Q. A temperature inversion is most likely to occur under which of the following conditions?
A)Calm, cloudy and humid night
B)Mountain top in late evening
C)Windy but cloudy night
D)Calm, clear and cool winter night
Answer: Calm, clear and cool winter night
- Q. Warm dry winds blowing down the east slopes of Rockies are known as ________
A)Foehn
B)Mistral
C)Nor' westers
D)Chinook
Answer: Chinook
- Q. Heat gain through insolation and heat loss through terrestrial radiation are equal approximately at which latitude?
A)90° North and South
B)22° W North and South
C)40° North and South
D)66° W North and South
Answer: 40° North and South
- Q. When a descending air contracts and its volume decreases, what happens to its temperature?
A)Its temperature remains constant
B)Its temperature decreases
C)Its temperature increases
D)Its temperature first increases, then decreases
Answer: Its temperature increases
- Q. When can one record the lowest temperature of air?
A)At 3 a.m.
B)Just before sunrise
C)At midnight
D)No fixed time
Answer: Just before sunrise
- Q. Precipitation takes place when ________
A)Temperature of moisture in air sharply decreases
B)The sky is overcast with clouds
C)Temperature of moisture in air suddenly increases
D)Winds begin to blow in a circular motion
Answer: The sky is overcast with clouds
- Q. The contact of two air masses differing sharply in humidity originates:
A)Temperate cyclones
B)Tropical cyclones
C)Inter-tropical convergence
D)Tropospheric instability
Answer: Temperate cyclones
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