What is evaporation?

Q: Why is Evaporation a Surface Phenomenon?

A: Evaporation is a surface phenomenon because, during evaporation, the molecules with higher kinetic…

Q: What happens to the amount of 'microscopic slush' in cold water when its temperature is increased?

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Q: In what form does the radiant energy travels?

A: Light is the form of radiant energy. Radiant energy travels through waves or particles.

Q: Many American homes have an outdoor pool for the children. On a hot summer day, why do the children…

A: American uses outdoor pool for children. Children find relief in the pool

Q: What are four common phases of matter?

A: A phase is a physically distinctive form of matter.

Q: Why does decreasing the temperature of a liquid make it freeze?

A: As the temperature of a liquid decreases, the randomness in the motion gets decreased. Freezing…

Q: Why are icebergs often surrounded by fog?

A: Temperature of ice burgs will be very low , it will be below zero degree Celsius .   Moisture…

Q: Why is thermal pollution a relative term?

A: Thermal pollution is the thermal energy pumped into the atmosphere, water bodies, etc. by the…

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

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Q: Show that 5000 cal are required to increase the temperature of 50 g of water from 0°C to 100°C. The…

A: Heat Required Q = m*c*(T2 - T1 )

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

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Q: Why will water at the bottom of a geyser not boil when it is at 100°C?

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Q: What is the effect of temperature on angle of contact?

A: If the temperature increases, angle of contact decreases due to decrease cohesive force and if the…

Q: Why is whitewash sometimes applied to the glass of florists’ greenhouses in the summer?

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Q: Does 'microscopic slush' in water tend to make it more dense or less dense?

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Q: What is the effect of temperature on surface tension?

A: Surface tension is the tension of the surface film of a liquid caused by the attraction of the…

Q: What is a thermocouple?

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Q: Why firewalkers dont burn their wetted feet when they walk barefoot on red-hot coals

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Q: What causes evaporation

A: There can be many factors that can cause evaporation. Temperature of the liquid: If the temperature…

Q: When will water boil at a temperature of less than 100°C?

A: Yes, the water can boils at a temperature less than 100 degree Celsius.

Q: What is the reason for ice being less dense than water?

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Q: Why is white wash sometimes applied to the glass of florists greenhouses in the summer?

A: A greenhouse traps heat inside it. Sunlight entering through the glass gets reflected inside the…

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: Distinguish between condensation and evaporation?

A: Evaporation is the process of a substances in the liquid state changing to a gaseous sate due to…

Q: Calculate the difference in the temperature of water at the top and at the bottom of the waterfall…

A: The height of the waterfall,

Q: explain why convection and conduction occur in making squash soup?

A: explain why convection and conduction occur in making squash soup?

Q: Name the method of heat transfer which doesnot depend on gravity.

A: In radiation, heat is transferred without any motion of the medium particles

Q: What happens to steam pressure and velocity in a converging nozzle?

A: A nozzle is a mechanical instrument/device which is used to control the motion of the fluid flowing…

Q: Why is steam burn more damaging than a burn from boiling water of the same temperature?

A: Latent heat of vaporization:Without changing the temperature of the liquid, the amount of energy…

Q: A 50-g chunk of 80°C iron is dropped into a cavity in a very large block of ice at 0°C. Show that…

A: Given:  mass, m = 50 g  T = 80 C  T' = 0 C  c = 0.11 cal/g C L = 80 cal/g

Q: Steaming cup of hot tea Is this Conduction, convection, or radiation

A: Conduction-when heat passes through solid in which heat passes from one point to another by…

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

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Q: What is terrestrial radiation?

A: The terrestrial radiation is the electromagnetic radiation that is emitted by the surface of the…

Q: What is thermal equilibrium?

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Q: What is the best material to use to insulate a home?

A: Bulk insulation includes materials such as glass wool, wool, cellulose fiber, polyester and…

Q: Calculate the difference in the temperature of water at the top and at the bottom of the waterfall…

A: Given that the height of the water fall is 100m.

Q: Distinguish between evaporation and boiling?

A: Evaporation is the process of a substances in the liquid state changing to a gaseous sate due to…

Q: What Is Funnel Used For?

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Ideal Gas Law

Ideal gas law states that the product of pressure and volume of a gas directly varies with the product of the number of moles, the universal gas constant, and the temperature of the gas.