23. Temperature

Q- Pyrometer is used to measure
(a) Air pressure
(b) Humidity
(c) High temperature
(d) Intensity of earthquake
Ans: (c)


Q- Consider the following statements:
1. In the high latitudes, East coast regions are warmer than West coasts.
2. Precipitation is abundant on the windward slopes but sparse on the leeward slopes.
3. In the subtropics, West coasts are wetter than the East coasts.
4. Precipitation is abundant in the middle latitudes. Which of the above statements is/are correct?
(a) 1, 2 and 3 (b) Only 2
(c) 2 and 4 (d) 3 and 4
Ans: (b)


Q- Minimum and maximum temperature are obtained from an instrument called
(a) A barometer
(b) A six’s thermometer
(c) An anemometer
(d) Clinical thermometer
Ans: (b)


Q- The lowest temperature is recorded by
(a) Maximum thermometer
(b) Mercurial thermometer
(c) Alcohol thermometer
(d) None of the above
Ans: (c)


Q- The difference between the maximum and minimum temperatures recorded for a place during a period of one day (24 hours) is called
(a) Daily mean temperature
(b) Diurnal temperature range
(c) Daily average temperature
(d) Mean monthly temperature
Ans: (b)


Q- As a means of heat transfer in the atmosphere which of the following is least significance?
(a) Conduction
(b) Convection
(c) Radiation
(d) None of the above
Ans: (a)


Q- When a descending air contracts its volume decreases. What happens to its temperature?
(a) Its temperature decreases
(b) Its temperature increases
(c) Its temperature remains constant
(d) Its temperature first increases, then decreases
Ans: (c)


Q- With increasing height, air temperature drops uniformly with altitude at a rate of approximately 6.5 Celsius per 1000 metres. This phenomenon is commonly called
(a) Environmental Lapse Rate
(b) Isothermal layer
(c) Tropopause
(d) Stratosphere
Ans: (a)


Q- The normal lapse rate of temperature in the troposphere is /°C for every
(a) 146 m (b) 156 m
(c) 166 m (d) 176 m
Ans: (c)


Q- On tall mountains a zonation of climate occurs as you move towards
(a) Lower elevation
(b) Higher elevation
(c) Lower to higher elevation
(d) None of the above
Ans: (b)


Q- The Gulf of Mexico has higher air temperatures than Britain because
(a) It’s closer to the pole
(b) It’s closer to the tropic
(c) It’s closer to the equator
(d) It’s closer to the Tropic of Cancer
Ans: (c)


Q- Which word fits this description ‘places near or on the coast have a smaller temperature range than those inland’?
(a) Latitude
(b) Altitude
(c) Continentality
(d) Prevailing wind
Ans: (a)


Q- The most important factor affecting horizontal distribution of temperature is
(a) Topography
(b) Land and sea distribution
(c) Winds Ocean currents
(d) None of the above
Ans: (b)


Q- Temperature inversion shows
(a) Warmer air overlying colder air
(b) Colder air overlying warmer air
(c) Humid air overlying colder air
(d) None of the above
Ans: (a)


Q- What happens when water is condensed into ice?
(a) Heat is absorbed
(b) Heat is released
(c) Quantity of heat remains unchanged
(d) None of the above
Ans: (a)


Q- Which of the following instruments is used for measuring the temperature?
(a) Barometer (b) Thermometer
(c) Hydrometer (d) Hygrometer
Ans: (b)


Q- Which one of the following factor can have the greatest?
(a) Aspect
(b) Distance from the sea
(c) Altitudes
(d) Ocean current
Ans: (b)


Q- Four towns, all at about the same altitude and on the same line of latitude, have mean January temperatures as given below, which town is farthest from the sea?
(a) 7°C (b) – 18°C
(c) –10°C (d) 3°C
Ans: (b)


Q- Which of the following pairs of months is used in Isothermal maps to examine extremes of temperature?
(a) December and June
(b) November and July
(c) November and June
(d) January and July
Ans: (d)


Q- Seasonal temperature variations are caused by
(a) Low angle of the sun
(b) Horizontal rays of the sun
(c) Vertical rays of the sun
(d) None of the above
Ans: (c)


Q- The daily and annual range of temperature is maximum in the
(a) Savana grass land
(b) Temperate grass land
(c) Hot desert
(d) Equatorial region
Ans: (c)


Q- On the clear winter night earth is cooled by
(a) Conduction (b) Convection
(c) Radiation (d) Condensation
Ans: (c)


Q- Short wave radiation from the Sun enters the surface atmosphere system of the Earth and is ultimately returned to space as long wave radiation
(a) because the Earth is cooler than the Sun
(b) because the Earth is hotter than the Sun
(c) because the Sun is cooler than the Earth
(d) None of the above
Ans: (a)


Q- If the temperature at the sea level 7°C, the temperature of the air at a height of 2000 m will be about
(a) 15°C (b) 16°C
(c) – 6°C (d) 10°C
Ans: (c)


Q- Temperature generally decreases towards the poles because
(a) Air movement is generally towards the equator
(b) Cold polar air masses prevent surface heating of the land
(c) Cold surface do not absorb solar energy as readily as warm surfaces
(d) Progressively lesser solar energy per unit area falls on the earth’s surface as we move to polar regions
Ans: (d)


Q- Under which of the following conditions would the influence of aspect on temperature be most noticeable?
(a) A flat sandy surface in the Sahara desert during July
(b) Hilly country in the Amazon basin in December
(c) The South facing side of a hill in central France in April
(d) The North facing side of a hill on the equator in June
Ans: (a)


Q- Air temperatures are affected by slope and orientation as slopes facing into the sun will be
(a) Warmer than those facing away
(b) Colder than those facing away
(c) Neither warmer nor colder than those facing away
(d) None of the above
Ans: (a)


Q- A temperature inversion is most likely to occur under which of the following condition?
(a) Mountain top in late evening
(b) Windy but cloud night
(c) Calm, cloudy and humid night
(d) Calm, clear and cool winter night
Ans: (d)


Q- Assertion (A): When temperature is held constant, the density of a gas is proportional to pressure, and volume is inversely proportional to pressure. Reason (R): An increase in pressure will cause an increase in density of the gas and a decrease in its volume. Codes
(a) If (A) and (R) are true and (R) is the correct explanation of (A)
(b) If (A) and (R) are true, but (R) is not the correct explanation of (A)
(c) If (A) is true, but (R) is false
(d) If (A) is false, but (R) is true
Ans: (b)


Q- Which of these statements about climate makes the most sense?
(a) Temperatures increase as you go further from the equator, temperatures increase with altitude
(b) Temperatures decrease as you go further from the equator, temperatures increase with altitude
(c) Temperatures increases you go further from the equator, temperatures decrease with altitude
(d) Temperatures decrease as you go further from the equator, temperatures decrease with altitude
Ans: (d)


Q- Assertion (A) : The temperature in the Southern Hemisphere is considerable lower than that in the Northern Hemisphere. Reason (R): The large mass of ice-covered Antarctic continent is an important source of cold in the South. Codes
(a) Both (A) and (R) are true and (R) is the correct explanation of (A)
(b) Both (A) and (R) are true, but
(R) is not the correct explanation of (A)
(c) (A) is true, but (R) is false
(d) (A) is false, but (R) is true
Ans: (c)


Q- Assertion (A) : Outside the tropics, annual receipts of solar radiation generally decrease with increasing latitude. Minimum values occur at the poles. Reason (R): This pattern is primarily the result of Earth-Sun geometric relationships and its effect on the duration and intensity of solar radiation received. Codes
(a) If (A) and (R) are true and (R) is the correct explanation of (A)
(b) If (A) and (R) are true, but (R) is not the correct explanation of (A)
(c) If (A) is true, but (R) is false
(d) If (A) is false, but (R) is true
Ans: (b)


Q- Assertion (A): In middle and high latitudes, insolation values over the ocean, as compared to those at the same latitude over the land, are generally higher. Reason (R): Greater cloudiness over land surfaces accounts for this variation. Codes
(a) If (A) and (R) are true and (R) is the correct explanation of (A)
(b) If (A) and (R) are true, but (R) is not the correct explanation of (A)
(c) If (A) is true, but (R) is false
(d) If (A) is false, but (R) is true
Ans: (a)


Q- Which of the following statement is/are correct?
(a) Temperature decreases with altitude, so mountainous regions, plateaus etc. can have cooler than expected temperatures
(b) The orientation of a slope in higher latitudes can affect the local climate; South facing slopes in Northern extra-tropical regions (say Canada) will be warmer and get more hours of sunlight than North facing slopes
(c) Mountain ranges can act as barriers to wind and rainfall, with much of hte rain falling on the windward side and top of the mountain and the lee of the mountain in ‘rain shadow’, i.e. with little rain
(d) All of the above
Ans: (d)


Q- Assertion (A) : Generally, temperature decreases from the equator towards poles which is temperature gradient. But the highest temperature is never recorded at the equator, instead it is recorded near both the tropics. Reason (R) : A sizeable portion of the incoming solar radiation is reflected by clouds and a large part of heat is spent in the process of evaporation. Codes
(a) Both (A) and (R) are individually true and (R) is the correct explanation of (A)
(b) Both (A) and (R) are individually true, but (R) is not the correct explanation of (A)
(c) (A) is true, but (R) is false
(d) (A) is false, but (R) is true
Ans: (a)


Q- Which of the following statement is true?
(a) Mountains receive more rainfall than low lying areas
(b) The temperature on top of mountains is lower than the temperature at sea level
(c) The higher the place is above sea level the colder it will be
(d) All of the above
Ans: (d)


Q- Consider the following conditions for the formation of temperature inversion:
1. Cloudy sky
2. Strong winds
3. Long winter nights
4. Cold dry air Which of the above conditions are ideal?
(a) 1, 2 and 3
(b) 1 and 2
(c) 2, 3 and 4
(d) 3 and 4
Ans: (d)


Q- When temperature is reduced to dew point condensation occur in the form of
1. Fog
2. Dew
3. Frost
(a) Only 1
(b) Only 2
(c) Only 1 and 2
(d) 1, 2 and 3
Ans: (d)


Q- Match List-I with List-II and select the correct answer the code given below the list: List-I List-II
A. Ozone hole 1. Difference in the outgoing and incoming radition of the atmosphere
B. Greenhouse 2. Acceleration effect of ozone destruction
C. Global warming
3. Increase in the CO level
D. Albedo 4. Ratio of reflected radiation to radiation received Codes A B C D
(a) 2 1 3 4
(b) 4 1 3 2
(c) 5 2 1 4
(d) 2 3 4 1
Ans: (a)


Q- Consider the following statements:
1. The decrease of temperature with increasing latitude is more pronounced in North Atlantic Ocean than the South Atlantic Ocean.
2. The vertical distribution of temperature in enclosed seas of higher latitudes registers inversion of temperature. Which of the statement(s) given above is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Ans: (b)


Q- The actual moisture content of a sample of air as a percentage of that contained in the same volume of saturated air at the same temperature is called
(a) absolute humidity
(b) relative humidity
(c) specific humidity
(d) vapour pressure
Ans: (b)


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