Description : The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, ... (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth
Last Answer : (C) clouds prevent escaping of the heat radiation from the earth
Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth
Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.
Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth
Last Answer : reflect back the heat given by earth
Description : Why cloudless nights are better for dew deposits than cloudy nights ?
Last Answer : During the day, the sun's heat keeps the air near the surface warm and unsaturated by water vapor. On a cloudless night, the surface radiates heat and cools, eventually reaching a temperature when the air ... from the surface. As a result, the surface does not get cold and dew does not freeze.
Description : Clear nights are colder than cloudy nights because of – (1) conduction (2) condensation (3) radiation (4) insolation
Last Answer : (3) radiation Explanation: Cloudless nights are colder because the nights that have clouds provide a blanket for the earth and trap some of the hot day air where as the cloudless nights ... waves travel through vacuum, or through matter-containing media that are not required for their propagation.
Description : Clear nights are colder than cloudy nights because of (1) conduction (2) condensation (3) radiation (4) insolation
Last Answer : radiation
Description : Water vapour turns into clouds in the atmosphere when: A. It rains B. The temperature rise C. Dew point is reached (Answer) D. Evaporation takes place
Last Answer : C. Dew point is reached (Answer)
Description : People living at sea level have around 5 million RBC per cubic millimeter of their blood whereas those living at an altitude to 5400 metres have around 8 million. This is because at high altitude ... required amount of O2 to survive (d) there is more UV radiation which enhances RBC production.
Last Answer : (c) atmospheric O2 level is less and hence more RBCs are needed to absorb the required amount of O2 to survive
Description : Which of the following conditions indicates a short circuited capacitor when checking its condition with an ohmmeter? A. The capacitor shows charging, but the final resistance reading is appreciably less ... moves quickly to the low resistance side of the scale, then slowly recedes toward infinity.
Last Answer : Answer: B
Description : Why are Clear nights colder than cloudy nights? -Do You Know?
Last Answer : answer:
Description : Why are Clear nights cooler than cloudy nights? -Do You Know?
Description : Why are Clear nights cooler than cloudy nights?
Last Answer : – Because of radiation
Description : Why are Clear nights colder than cloudy nights?
Last Answer : Because of Radiation
Last Answer : Because of radiation
Description : Cloudy nights are usually warmer than the clear ones.
Last Answer : Ans: The clouds serve as a barrier and prevent the loss of heat. Thus the warm temperature is maintained.
Description : Give scientific reason of the following: (1) Pole star is always seen in the north. (2) We never see birds urinating. (3) Pasteurized milk has more nourishment than the ordinary boiled milk. (4) Bees die when they sting human beings. (5) Cloudy nights are usually warmer than the clear ones.
Last Answer : (1) Pole star is always seen in the north. Because the pole star, which we have in the south, is too faint that it cannot be seen from the naked eye. or Because the earths motion is from ... to get lost in the atmosphere, above the clouds. Ultimately, the heat produced in the vicinity is restored.
Description : Do you like clouds/cloudy skies as much as I do? Care to share your (preferably self shot) picture of them?
Last Answer : Wow.. Those are beautiful shots!
Description : Sound is heard over longer distances on rainy days because – (1) sound travels slowly in moist air (2) sound travels faster in moist air (3) moist air does not absorb sound (4) moist air absorbs sound
Last Answer : (2) sound travels faster in moist air Explanation: The speed of sound in a medium is inversely proportional to the square root of its density. Higher is the humidity in the air, greater will be the velocity ... of trains and others are heard up to longer distances on a rainy day than on a dry day.
Description : Sound is heard over longer distances on rainy days because (1) sound travels slowly in moist air (2) sound travels faster in moist air (3) moist air does not absorb sound (4) moist air absorbs sound
Last Answer : sound travels faster in moist air
Description : Ethers are kept in brown bottles because (a) Brown bottles are cheaper than colorless clear bottles (b) Ethers absorb moisture (c) Ethers evaporate readily (d) Ethers are oxidized to explosive peroxides
Last Answer : Ethers are oxidized to explosive peroxides
Description : Very often, the farmers add lime to the soil before ploughing because (a) high concentration of lime aids the plant growth (b) lime takes up the extra moisture of the soil (c) the soil becomes soft and it becomes easy to plough (d) lime decreases the acidity of the soil
Last Answer : Ans:(d)
Description : The increasing amount of CO2 in the atmosphere is slowly raising its temperature because it absorbs (a) the infrared part of the solar radiation (b) the ultraviolet part of the solar radiation (c) all the solar radiations (d) the water vapour of the air
Last Answer : Ans:(a)
Description : Dew point can be best defined as the: a. Absolute temperature at which air, upon heating, will evaporate moisture b. . Percentage of moisture that air can hold at a given temperature ... to condense should the temperature drop further e. . Atmospheric pressure at which air will condense moisture
Last Answer : Answer: D
Description : The purpose of the 'heater resistors' for the winch circuit shown in the illustration is to _______________. EL-0102 A. limit the current in the heater circuit B. dispel moisture in the ' ... panel C. keep the winch brake housing below the dew point D. maintain winch motor operating temperature
Description : Moisture condensed in small drops upon cool surface is called— (A) Hail (B) Dew (C) Snow (D) Fog
Last Answer : (B) Dew
Description : Dew point temperature always gives an indication of the __________ of the moist air. (A) Dryness (B) Moisture content (C) Coolness (D) Latent heat
Last Answer : (B) Moisture content
Description : What law predicts the dew point of moisture in the fuel gas? A. Dalton’s law B. Law of Dulong and Petit C. Ringelman law D. Amagat’s law
Last Answer : Dalton’s law
Description : The property of a substance to absorb moisture from the air on exposure is called------? A. osmosis B. deliquescence (Answer) C. efflorescence D. desiccation
Last Answer : B. deliquescence (Answer)
Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted
Last Answer : (C) Radiation
Description : In what form do Water vapor droplets form clouds and Earth's gravity pulls the moisture to the surface?
Last Answer : The moisture drops to the earth as some form of precipitation(rain, snow, sleet, hail).
Description : What Water vapor droplets form clouds and Earth's gravity pulls the moisture to the surface in the form of?
Last Answer : rain
Description : In the western United States, the movement of air causes clouds to release their moisture as rain on which side of mountain ranges?
Last Answer : northern
Description : $ Velamen tissue can directly absorb moisture from the atmosphere ! Velamen tissue is present in desert plants.
Last Answer : $ Velamen tissue can directly absorb moisture from the atmosphere ! Velamen tissue is present in desert plants. ... D. If both As and R are wrong.
Description : Capacity of soil to absorb moisture, is generally known as (A) Permeability (B) Porosity (C) Infiltration capacity (D) Perviousness
Last Answer : (C) Infiltration capacity
Description : Read the statement given below (i ) Seeds require moisture for germination . (ii) Plant can absorb nutrients in dissolved form. (iii) Irrigation protects crop from both frost and hot air currents . (iv) Irrigation improves soil texture . a) i and ii b) i ,ii, iii c) i , ii , iii , iv . d) i and iii
Last Answer : a) i and ii
Description : Which one of the following is not a matter a global concern in the removal of tropical forests ? (A) Their ability to absorb the chemicals that contribute to depletion of ozone layer ... , moisture content and reflectivity. (D) Their contribution to the biological diversity of the planet.
Last Answer : (A) Their ability to absorb the chemicals that contribute to depletion of ozone layer.
Description : Wound healing by secondary intention takes place: C A. when the wound does not break apart B. when the wound edges are brought together C. much more slowly than healing by first intention D. in surgically incised wounds
Last Answer : much more slowly than healing by first intention
Description : What Clouds are formed very high in the atmosphere?
Last Answer : Need answer
Description : Is there something that you could do quickly but choose to do slowly?
Last Answer : Ummm….. like playing a good round of golf with your friends! Enjoy the moment…nature, friendship, etc. !
Description : Two identical weights are dropped simultaneously, one on water and the other in glycerine. Which of the following statement is correct? a.The weight will settle slowly in water but quickly in glycerine ... level will rise d.The weight will settle quickly in water but slowly in glycerine e.107 dynes
Last Answer : d. The weight will settle quickly in water but slowly in glycerine
Description : Please attack here
Last Answer : The question is very inaccurate. Do you just want to repair or rebuild? He usually contradicts himself quickly and for little. We have no idea how skilled you are and what you can or can't do yourself.
Description : Do the acid in our stomach works slowly or quickly?
Description : The transient response, with feedback system, a) Rises slowly b) Rises quickly c) Decays slowly d) Decays quickly
Last Answer : Ans: D
Description : Motor controller or starter contacts may become pitted and welded together if the contacts _____________. A. open under loaded conditions B. close slowly with light pressure C. open too quickly and arc D. close quickly with proportionate pressure
Description : Fill in the blanks with the appropriate option. She was already growing impatient, and _______ her foot, ready to cry at his not coming at once, when she heard the young man's ________ steps approaching ... slowly. (a) Stamped, Discreet (b) Kicked, Prudent (c) Trampled, Unobtrusive (d) Moved, Chary
Last Answer : Ans: a) Stamped, Discreet
Description : A barometer is kept inside a bell jar. Air is slowly pumped out of the jar. (1) The mercury level starts rising (2) The mercury level starts falling (3) The mercury level does not change (4) The bell jar breaks up
Last Answer : (1) The mercury level starts rising Explanation: As the pump removes the air from the bell jar the pressure obviously reduces around the barometer. The reduction in pressure around the barometer leads it to expand. As the pump removes air from the jar, the mercury level rises.
Last Answer : The mercury level starts rising
Description : which of the following statements is not true for scattering of light? (a) Colour of the scattered tight depends on the size of particles of the atmosphere. (b) Red light is least scattered in the ... air scatter the blue, light more strongly than red. So the scattered blue light enters our eyes.
Last Answer : (c) Scattering of light Lakes place as various colours of white light travel with different speed in fir.
Description : Pick out the wrong statement. (A) Nitrogen is normally supplied in fertiliser either in Ammoniacal or the nitrate form, from which the soil takes it up in the form of ammonium ions ornitrate ... nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens
Last Answer : (D) Ammonium nitrate fertiliser is obtained as a by-product in an integrated steel plant having by-product coke ovens