[True/False] * Latent heat transfer occurs when condensation adds heat energy an

Question

[True/False]

* Latent heat transfer occurs when condensation adds heat energy and evaporation reduces heat energy of the surrounding atmosphere.

* Albedo is an index (%) of radiation scattered to amount of radiation reflected.

* The tilt of Earths axis is 23.5 deg from perpendicular and provides greater direct sunlight during the winter in the Northern Hemisphere.

* Earth is closest to the Sun during the summer in the Northern Hemisphere.

* A parcel of air is saturated when the amount of water vapor molecules evaporating equals the amount of water vapor condensation in a parcel or air (temperature & pressure held constant) .

*As air cools, the movement of vapor molecules slow and coalesce on condensation nuclei.

Explanation / Answer

1) We can understand the fact that latent heat is the internal heat which reside in the matter. or we can understand it according to the concept of thermodynamics. it stated that latent heat occurs in the mstter or system when there is a change in the state of matter. take the case of water when it melt, the latent heat decrease due to absorption of the energy.

So it is TRUE that latent heat transfer occure when condensation add heat energy and evaporation reduced heat energy of the surroundings.

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2) Albedo is an index of radiation scattered to amount of radiation reflected. basically what happen that albedo make us understand the fact of radiated energy from a sources is retured back to the source after the reflection from an opaque body is take place. it give us the proportional data regarding this amount or we can take it as in percentage then we can find the index of it.

so it is TRUE.

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3) The earth is tilted from it axis is about 23.5 deg but the fact is that the changes of season take place when there is alignation of earth from its axis as well as revolution in it's orbit. when there is a summer season it means that the northern hemisphere is tilted towards the sun at getting great amount of radiation but when it is winter the northern hemisphere is tilted away from the sun which means northern hemisphere isnot getting greater sunlight.

so it is FALSE.

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4) During winter in northern hemisphere,earth is closest to sun and during summer in northern hemisphere, earth is far away from the sun

so it is FALSE.

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5) Yes, when a parcel of air is saturated then the amount of water vapour molecules evaporates equals the amount of water vapour condensation in a parcel of air. as the rate of change is same and equal so there is a state of saturation takes place.

so it is TRUE.

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6) The air or gaseous molecules follow a random path during there movement and we termed it as brownian movement. when the air is cool down the internal energy decreases and hence the movement is slow down and get coalescne.

so it is TRUE.

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