What is a thermocouple?

Q: what is meant by optimal temperature ?

A: Optimum temperature: The temperature at which an enzyme shows its highest activity is called optimum…

Q: Cite three ways in which a Thermos bottle inhibits heat transfer.

A: Construction of thermos is as shown in the figure. Coffee is stored in an internal container as…

Q: Does a liquid release energy or absorb energy when it changes into a gas?

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Q: Why is evaporation a cooling process?

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

Q: What do you think will happen if water is used in a thermometer instead of mercury?

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Q: What is evaporation?

A: Evaporation is a fundamental part of the water cycle and it is constantly occurring throughout the…

Q: What is the basic difference between a cloud and fog?

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Q: Choose the BEST answer to the following: Thermal convection mainly involves (a) radiant energy. (b)…

A: Step 1Thermal convection is the transfer of heat by motion of a fluid, such as air or water from one…

Q: If cooling occurred at the bottom of a pond instead of at the surface, would the pond freeze from…

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Q: What is calorimeter?

A: Chemical reactions in general involve an exchange of heat between the system (reactants and…

Q: Why is specific heat capacity important?

A: The relationship between the change in a substance’s thermal energy and the change in its…

Q: What heats faster, land or water?

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Q: In summer cotton dresses should be preferred, Why?

A: Step 1During summers everyone tends to perspire a lot as a mechanism of our body to keep us cool.…

Q: What happens to the volume of water as it cooled from 3 degree C - 1 degree C?

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

A: When air will get warmer, it will rises and expands. As air is expanding, the pressure will be…

Q: If you drop a hot rock into a pail of water, the temperature of the rock and the water will change…

A: If you drop a hot rock into a pail of water, the temperature of the rock and the water will change…

Q: What property of water makes it an effective coolant?

A: To be an effective coolant, a substance has to have a high specific heat capacity, so that it can…

Q: What generally happens to the temperature of rising air and sinking air?

A: If the Air sinking down compresses air at the surface, raising temperatures near the ground. The…

Q: Cooling is produced when a gas at high pressure suddenly expands. Explain.

A: When the gas at high pressure suddenly expands, the average distance between its molecules…

Q: Discuss the role of high specific heat capacity of water with reference to climate in coastal areas.

A: Specific heat capacity is the amount of heat energy takes to raise or lower the temperature of one…

Q: Why the climate of a harbour town is more temperate than that of a town in a desert at the same…

A: Reason : The climate of a harbour town is more temperate than that of a town in a desert at the same…

Q: A radiator pits warm air out at the top and draws in cooler air at the bottom. Is this Conduction,…

A: Given- A radiator pits warm air out at the top and draws in cooler air at the bottom.

Q: What happens to the temperature of air  when it expands?

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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: What is first law of thermo dynamics?

A: First law of thermodynamics is based on principle of energy conservation. i.e. whenever you add some…

Q: Which will undergo the greater rate of cooling- a red hot poker in warm oven or red hot poker in…

A: According to Newton’s law of cooling, rate of cooling is directly proportional to the temperature…

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

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Q: Distinguish between weather and climate?

A: Climate is the average weather conditions over a long period of time. It can be generalized, since…

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: 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: Which property of water allows water striders to walk across ponds? O a Specific Heat Capacity O b…

A: Water striders are capable to walk on top of water due to a combination of different factors  water…

Q: What is internal energy?

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Q: What is thermal equilibrium?

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Q: Condensation of water in the air is an important process in determining the climate of an area. When…

A: Heat of condensation is just opposite to Heat of vaporization It is the amount of heat released when…

Q: Which of the following is not an example of heat transfer via convection? Air Conditioner O Breeze O…

A: Correct option  (D). Microwave oven Reason 1) Microwave is example of radiation. 2) Microwaves use…

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: When does Thermal equilibrium occur?

A: A thermal equilibrium between two systems occurs when there is no net exchange of heat between them.

Q: If coal gives off 30 MJ/kg when burned, how much coal isneeded to heat a house requiring 2.0x 105 MJ…

A: Given data The energy given by the coal is E=30 MJ/kg The required heat is Eo=2.0×105 MJ   Let n kg…

Q: Give examples of latent heat, fusion, evaporation, and condensation on a day to day basis.

A: Objective: To determine the examples of latent heat, fusion, evaporation, and condensation in the…

Q: Does heat flow into cold areas or does cold flow into hot areas?

A: Yes heat flows from hot to cold area or we can say it moves with the help of particle or atom. for…