Results
#1. Diurnal variation of temperature is greatest when wind is
wind and cloud cover will cause T max to be reduced and T min to be increased.
WIND: wind will cause turbulent mixing of the warm air at the surface with cold air above, reducing T max. Strong wind reduces diurnal variation
CLOUD: the solar radiation is reflected back by the cloud tops
#2. Diurnal variation of temperature is maximum over
Due to the nature of surface the diurnal temperature changes or much smaller over the sea than over the land the sea temperature shows a variation from day to night of less than 1°C whereas Overland the diurnal variation may average as much as 20°C
#3. On a clear day the amount of solar radiation received by earth surface is
In clear weather about 5/6 of the solar radiation reaches earth surface of this reflects about 10% of surface reflects about 80% of the incident
#4. ALBEDO is
Albedo is a measure of the ratio of scattered to incident light or radiation. A substance with a high albedo is a substance that scatters or reflects a large proportion of the radiation or light it receives. The nature of the surface, being dark or light will affect it albedo.
#5. During day the ambient temperature is _____ than ground
#6. Diurnal variation of temperature over ocean is _____
Due to the nature of surface the diurnal temperature changes or much smaller over the sea than over the land the sea temperature shows a variation from day to night of less than 1°C whereas Overland the diurnal variation may average as much as 20°C
#7. At a coastal station the diurnal variation of temperature depends on
Due to the nature of surface the diurnal temperature changes or much smaller over the sea than over the land ,
at a costal station it depends on weather it is a sea breeze or land breeze,
#8. Snow surface reflects about ______ % of solar radiation.
In clear weather about 5/6 of the solar radiation reaches earth surface of this reflects about 10% of surface reflects about 80% of the incident
#9. Amount of Solar radiation received per unit area is
Total amount of solar radiation received over a particular area is called insolation insolation depends on obliquity of sons rays hence insolation at any place is maximum when the sun is overhead and least during sunrise and sunset maximum insolation is received over the tropics the region between the Tropic of Cancer and Tropic of capricorn and least at the polls
#10. Solar radiation received by the earth is
As per Wien,s law: Hot bodies like sun radiate short waves and colder bodies like earth radiate long waves because earth is receiving heat from sun it receives short waves
#11. Rise in temperature of a surface is proportional to its specific heat
Specific heat of water is 1
ice 0.5
soil 0.2
Material with high specific heat has slowest rise in temperature
water gets heated much later than land
hence inversely proportional
#12. Specific heat of land is _____ than that of water
Specific heat of water is 1
ice 0.5
soil 0.2
Material with high specific heat has slowest rise in temperature
water gets heated much later than land
#13. Minimum temperature is reached at
As per diurnal variation of temperature
From 15:00 LMT onwards, the temperature falls continuously until a little after sunrise. The lowest temperature occurs at about sunrise plus 30 minutes. (TMIN)
#14. An air parcel is lifted till it gets saturated. The temperature attained by its called
The dew point is the temperature to which the air must be cooled, at constant barometric pressure, for the water vapour contained in the air to condense
if a parcel of air was forced to rise in the atmosphere, the decreasing ambient pressure would cause the parcel to expand, much like an air bubble does when it rises through a champagne glass. As the air rises and expands, it will cool adiabatically. Rising air is characteristic of low pressure systems, and as a result of the rising air cooling, it will condense and form cloud.
#15. Cloudy nights are
During night the cloud cover absorbs most of the outgoing radiation from earth at the same time the lower surface of the clouds radiate towards the earth hence cloudy nights are warmer
#16. Water vapour is transparent to terrestrial radiation
The earth radiates its own temperature and loses heat these is called terrestrial radiation which are long wave radiation ,the earth receives heat a short wave radiation from the sun and loses heat as long wave radiation these shortwave radiations or completely invisible but when it reflects the oceans there is also water vapour produced which is partially visible
#17. Higher the temperature ______ would be the wavelength of emitted radiation
As per Wien,s law: Hot bodies like sun radiate short waves and colder bodies like earth radiate long waves because earth is receiving heat from sun it receives short waves
#18. Air is a bad conductor of heat. A parcel of air can therefore be regarded as insulated from the environment
Air is a bad conductor of heat has a small parcel of air involved in atmospheric process can be regarded as insulated from the surrounding
#19. Warmer the earth _____ will be the Nocturnal radiation
Due to nocturnal cooling the surface temperatures continue to fall even after the sunrise till a balance is reach between incoming and outgoing radiation, warmer the earth intense will be the nocturnal coolin to balance out
#20. Heat is the _____ of the KE of all the molecules and atoms of a substance
Heat is the sum total of the kinetic energy of all molecules and atoms of a substance
temperature is the average kinetic energy of all molecules and atoms of a substance
#21. The solar radiation consists of about 46%
IR 46%
VISIBLE 45%
UV 09%
#22. The total energy radiated by a black body is proportional to its temperature(T)
Stephen Boltzman law the law states that the total amount of energy radiated by a black body is proportional to the fourth power of its absolute temperature hence intense radiation or emitted by hot bodies like sun
#23. Intense radiation are emitted by
Stephen Boltzman law the law states that the total amount of energy radiated by a black body is proportional to the fourth power of its absolute temperature hence intense radiation or emitted by hot bodies like sun
#24. The wavelength of most intense radiation is inversely proportional to its
Stephen Boltzman law the law states that the total amount of energy radiated by a black body is proportional to the fourth power of its absolute temperature hence intense radiation or emitted by hot bodies like sun
#25. Hot bodies (like sun) radiate
As per Wien,s law: Hot bodies like sun radiate short waves and colder bodies like earth radiate long waves because earth is receiving heat from sun it receives short waves
#26. The flow of heat from earth surface is 77% by

#27. -40°C = -40°F

#28. The door of Stevenson’s screen should open

#29. The liquid used in Minimum Thermometer is
Minimum thermo meter has a dumbbell shaped iron index which permits alcohol to pass through when temperature rises ,when temperature falls the alcohol which has a concave meniscus drags the index back to indicate minimum temperature
#30. Freezing point of water is
Temperature is fixed with reference to the melting point of ice and boiling point of pure water at normal pressure
on the Celsius scale these are 0°C and 100° Celsius
and in Fahrenheit scale 32°F and 212°F
#31. Boiling point of water is
Temperature is fixed with reference to the melting point of ice and boiling point of pure water at normal pressure
on the Celsius scale these are 0°C and 100° Celsius
and in Fahrenheit scale 32°F and 212°F
#32. Freezing point of water is
Temperature is fixed with reference to the melting point of ice and boiling point of pure water at normal pressure
on the Celsius scale these are 0°C and 100° Celsius
and in Fahrenheit scale 32°F and 212°F
0° 273k= 273k
#33. Boiling point of water is
Temperature is fixed with reference to the melting point of ice and boiling point of pure water at normal pressure
on the Celsius scale these are 0°C and 100° Celsius
and in Fahrenheit scale 32°F and 212°F
100°c 273k = 373k
#34. Convert 68°F into Kelvin temperature
Using this formula convert it into Celsius

20°C
273 plus 20=293
#35. Diurnal variation of temperature is least on a day when it is
wind and cloud cover will cause T max to be reduced and T min to be increased.
WIND: wind will cause turbulent mixing of the warm air at the surface with cold air above, reducing T max. Strong wind reduces diurnal variation
CLOUD: the solar radiation is reflected back by the cloud tops hence cloudy nights or day reduce diurnal variation
#36. A clear and calm night is cooler than a cloudy night, because nocturnal radiation
wind and cloud cover will cause T max to be reduced and T min to be increased.
WIND: wind will cause turbulent mixing of the warm air at the surface with cold air above, reducing T max. Strong wind reduces diurnal variation
CLOUD: the solar radiation is reflected back by the cloud tops
#37. Which surface will cause higher diurnal variation
Sand has a speck heat of 0.2 or less hence it gets heated and cooled faster
#38. If temperature does not change in a layer with height on a day indicates
A layer of atmosphere where the temperature remains same with increase in height is called isothermal
example, just above the tropopause.
#39. Surface Temperature is recorded at a height of _____ above ground



