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Temperature Quiz For CPL

 

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

The Stevenson screen door should face away from the sun to minimize direct sunlight.

#2. Higher the temperature ______ would be the wavelength of emitted radiation

According to Wien’s law, hotter objects emit shorter wavelengths of radiation.

#3. Diurnal variation of temperature over ocean is _____

Due to the nature of the surface, diurnal temperature changes are much smaller over the sea than over land. The sea’s temperature typically varies less than 1°C between day and night, while the diurnal variation over land can average as much as 20°C.

#4. The total energy radiated by a black body is proportional to its temperature(T)

According to Stefan-Boltzmann law, energy radiated by a black body is proportional to T⁴.

#5. Water vapor is transparent to terrestrial radiation

The Earth radiates its own heat, known as terrestrial radiation, which is primarily longwave radiation. The Earth receives heat from the Sun as shortwave radiation, which is invisible to the human eye. When this shortwave radiation is reflected by the oceans, it can also produce water vapor, which can be partially visible.

#6. ALBEDO is

Albedo is a measure of how reflective a surface is. High albedo surfaces reflect more sunlight, while low albedo surfaces absorb more. Factors like color, texture, and composition affect albedo.

#7. 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

#8. Heat is the _____ of the KE of all the molecules and atoms of a substance

Heat is the total kinetic energy of all the molecules and atoms in a substance. Temperature, on the other hand, is the average kinetic energy of these particles.

#9. If temperature does not change in a layer with height on a day indicates

An isothermal layer is a layer of the atmosphere where the temperature remains constant with increasing height. An example of an isothermal layer is the region just above the tropopause.

#10. Which surface will cause higher diurnal variation

Sand has a speck heat of 0.2 or less hence it gets heated and cooled faster

#11. The liquid used in Minimum Thermometer is

The minimum thermometer features a dumbbell-shaped iron index that allows alcohol to pass through when the temperature rises. However, when the temperature falls, the alcohol, which has a concave meniscus, pulls the index back to indicate the minimum temperature.

#12. Diurnal variation of temperature is least on a day when it is

Wind and cloud cover can affect diurnal temperature variation. Strong winds mix warm and cold air, while clouds reflect solar radiation and trap heat, both reducing temperature extremes.

#13. Rise in temperature of a surface is proportional to its specific heat

Due to water’s high specific heat, coastal areas experience smaller temperature variations than inland areas. This is why diurnal temperature changes are less over the sea compared to land.

Water: 1
Ice: 0.5
Soil: 0.2

#14. 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

#15. Surface Temperature is recorded at a height of _____ above ground

Surface temperature is typically measured at a height of 1.5 meters above the ground.

#16. Diurnal variation of temperature is maximum over

Due to the nature of the surface, diurnal temperature changes are much smaller over the sea than over land. The sea’s temperature typically varies less than 1°C between day and night, while the diurnal variation over land can average as much as 20°C.

#17. Minimum temperature is reached at

According to diurnal temperature variation, the temperature falls continuously from 15:00 LMT (Local Mean Time) until shortly after sunrise. The lowest temperature typically occurs around 30 minutes after sunrise (Tmin).

#18. 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

#19. Cloudy nights are

#20. Hot bodies (like sun) radiate

According to Wien’s law, hot bodies like the Sun emit shortwave radiation, while colder bodies like the Earth emit longwave radiation. This is why the Earth, despite receiving shortwave radiation from the Sun, emits longwave radiation back into space.

#21. Convert 68°F into Kelvin temperature

Kelvin = (Fahrenheit – 32) * 5/9 273.15

To convert 68°F to Kelvin:

68°F – 32°F = 36°C
36°C * 5/9 = 20°C
20°C 273.15 = 293.15 K
Therefore, 68°F is approximately equal to 293.15 K.

#22. Boiling point of water is

100°C is equivalent to 373 K.

#23. Diurnal variation of temperature is greatest when wind is

Wind and cloud cover can cause the maximum temperature (Tmax) to be reduced and the minimum temperature (Tmin) to be increased.

Wind: Strong winds can reduce diurnal temperature variation by mixing warm surface air with cooler air above.
Clouds: Clouds can reflect solar radiation back into space, reducing the amount of heat reaching the Earth’s surface, which can lower the maximum temperature. Additionally, clouds can trap heat at night, preventing temperatures from falling as much, which can raise the minimum temperature.

#24. At a coastal station the diurnal variation of temperature depends on

Due to the nature of the surface, diurnal temperature changes are much smaller over the sea than over land. At a coastal station, the diurnal temperature variation can be influenced by whether a sea breeze or a land breeze is prevailing.

#25. On a clear day the amount of solar radiation received by earth surface is

In clear weather, about 5/6 of solar radiation reaches the Earth’s surface. Of this, approximately 10% is reflected by the atmosphere, while the remaining 80% is absorbed by the Earth’s surface.

#26. -40°C = -40°F

-40°C and -40°F are the same temperature.

#27. Air is a bad conductor of heat. A parcel of air can therefore be regarded as insulated from the environment

Air is a poor conductor of heat, so a small parcel of air can be considered insulated.

#28. Specific heat of land is _____ than that of water

Land has a lower specific heat than water.

Water: 1
Ice: 0.5
Soil: 0.2

#29. The solar radiation consists of about 46%

The approximate composition of solar radiation reaching the Earth’s surface is:

Infrared (IR): 46%
Visible light: 45%
Ultraviolet (UV): 9%

#30. Snow surface reflects about ______ % of solar radiation.

The total amount of solar radiation received over a particular area is called insolation. Insolation depends on the angle at which the Sun’s rays strike the Earth’s surface (obliquity). Therefore, insolation is maximum when the Sun is directly overhead and least during sunrise and sunset. The tropics, the region between the Tropic of Cancer and the Tropic of Capricorn, receive the most insolation, while the poles receive the least.

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