Why does snow remain on mountain slopes even when daytime temperatures are higher than the freezing temperature?

Q: Why does snow often remain even when daytime temperatures are higherthan the freezing temperature?

A: For any substance to melt, it requires an enormous amount of energy. Snow forms by the fusion of…

Q: Which one of the following phrases is an example of sublimation? * the condensation of steam on a…

A: Sublimation is conversion of a substance from the solid to the gaseous state without becoming…

Q: Why are icebergs often surrounded by fogs?

A: Condensation can be defined as the change of phase of water from gaseous to liquid.

Q: Why is evaporation a cooling process?

A: Evaporation is the process in which water changes its phase from liquid to gaseous.

Q: At night, the surface of the earth cools, mostly by radiation. The surface radiates energy upward;…

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Q: Why does water vapor in the air condense when the air is chilled?

A: In the condensation process, a substance changes its phase from gas to liquid.   The kinetic energy…

Q: When there is morning frost on the grass in an open park, why is frost unlikely to be found on the…

A: The ground beneath the bench absorbs less solar radiation compared to the open ground. The ground…

Q: Why do Eskimos build double walled houses of blocks of ice?

A: The Eskimos build double walled houses in order to keep the interior of their houses warm.

Q: VERY HIGH-SPEED AIR DRAMATICALLY INCREASES HEAT TRANSFER 1 radiation. 2. convection 3. conduction 4.…

A: Convection is the transfer of heat from one place to another due to the movement of fluid.

Q: Why will spraying fruit trees with trees with water before a frost help to protect the fruit from…

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Q: When night falls, the temperature of the earth’s surface starts to drop. On a cool night, dew starts…

A: Dew are the condensed tiny water droplets of water vapors present in the earth’s atmosphere and can…

Q: What occurs when air is subjected to less pressure? The air becomes compressed. B. The air expands.…

A: GIVEN: The relation between temperature and pressure is given as  P1T1=P2T2 i.e. when the pressure…

Q: A hot plate placed in snow on a cold winter day is a net   absorber.   emitter.   Both of these.…

A: Given, A hot plate placed in snow on a cold winter day

Q: Roofs of the huts are blown up during stormy days. Why?

A: Roofs of the huts are blown up during stormy days because

Q: You know that the windows in your warm house get wet on a cold day. But can moisture form on the…

A: On a cooler day, the window surface will be probably cold enough that condensation will form as the…

Q: AT HIGH AIR MOBILITY THE WAY OF HEAT RETURNING IS IMPROVED 1. radiation 2. conduction 3. evaporation…

A: At high air mobility the way of heat returning is improved due to conduction.

Q: In what forms is thermal insulation available?

A: Thermal insulation is the process of reducing heat from the surroundings. It can be done using many…

Q: Why is it that a tub of water placed in a farmer's canning cellar helps prevent canned food from…

A: Canning cellar is a place build by the farmers to store the foods in cold winters.The water has…

Q: Why is it safe to remain inside a car during a lightening storm?

A: During a lightning storm, it is safer to sit inside a car rather than standing under a tree. This…

Q: Many tongues have been injured by licking a piece of metal on a very cold day. Why would no harm…

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Q: What happens to the volume of air as it rises? What happens to its temperature?

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Q: Suppose the hot cocoa loses 100J of energy by heating. How much energy does the air gain?

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Q: Why do we wear woollen clothes in winter?

A: During winter season the human body temperature increases to the environmental temperature and heat…

Q: Why does the weather become very cold after a hail storm?

A: Ice absorbs a large amount of Latent heat from the surroundings to melt. There is a lot of heat in…

Q: How does adiabatic temperature change lead to a change in relative humidity?

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Q: The earth without its atmosphere would be inhospitably cold , Why?

A: The sun rays contain infrared radiations.When these rays reach earth’s surface, these are reflected…

Q: AT HIGH HUMIDITY AIR REDUCES HEAT RETURN 1. radiation 2. conduction 3. evaporation 4. convection

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Q: Explain the saying “It’s not the heat; it’s the humidity.”

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Q: Everybody knows that warm air rises. So, it might seem that the air temperature should be higher at…

A: The temperature decreases with altitude. Let us assume the following situation where the balloon is…

Q: Why does rising unsaturated air (air rising below the lifting condensation level) cool more quickly…

A: Unsaturated air cools at a rate of 10° C/ Km. However, Saturated air cools at average rate of 6°…

Q: If water had a lower specific heat capacity, would ponds be more likely to freeze or less likely to…

A: A lower heat capacity means that less energy must be transferred to result in a temperature change.

Q: On cold, clear nights horses will sleep under the cover of large trees. How does this help them keep…

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Q: Near a large body of water, the fluctuations in air temperature are usually less extreme than they…

A: Temperature refers to the hotness or coldness of a body. In specific terms, it is the way of…

Q: The cover of a solar coker is made of glass because:    A) it absorbs sun's rays B) it reflects…

A: The glass always produces the green house effect. It does not allow the smaller wavelength to escape…

Q: What actually is thermal pollution?

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Q: On freezing days, frost often forms on windows. Why is there usually more frost on the bottom…

A: Usually, there exists a temperature gradient in a room with cooler air near the bottom. As a result,…

Q: What will happen if a metal piece is touched with a finger in arctic cold?

A: A metal piece in artic cold will be frozen. When skin is exposed to cold weather conditions or came…

Q: You put two uncovered pails of water, one containing hot water and one containing cold water,…

A: Answer:-  You put two uncovered pails of water, one containing hot water and one containing cold…

Q: What is quality? Does it have any meaning in the superheated vapor region?

A: The ratio of the mass of the vapor to the total mass of the mixture is known as quality. It is also…

Q: If you were caught in freezing weather with only your own body heat as a source, would you be warmer…

A: In a freezing weather, only source of heat available is body temperature.

Q: A blanket keeps our body warm in winter, but the same blanket can protect ice from melting, Explain…

A: A blanket keeps our body warm in winter, but the same blanket can protect ice from melting because a…

Q: Why is it important to protect water pipes in the winter so that they don’t freeze?

A: Given:  water pipes