Heat Transfer Methods
Physics ⇒ Heat and Thermodynamics
Heat Transfer Methods starts at 7 and continues till grade 12.
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A hot air balloon rises because of which method of heat transfer?
A metal plate is exposed to sunlight and becomes hot. Which method(s) of heat transfer are involved in this process?
A metal rod is heated at one end. After some time, the other end also becomes hot. Which method of heat transfer is responsible for this?
A room is heated by a radiator. The air near the radiator becomes warm and rises, while cooler air moves in to take its place. What is this process called?
A hot air balloon rises because of which method of heat transfer?
A metal plate is exposed to sunlight and becomes hot. Which method(s) of heat transfer are involved in this process?
A metal rod is heated at one end. After some time, the other end also becomes hot. Which method of heat transfer is responsible for this?
A room is heated by a radiator. The air near the radiator becomes warm and rises, while cooler air moves in to take its place. What is this process called?
Which law describes the rate of heat transfer through a material by conduction?
(1) Newton's Law of Cooling
(2) Stefan-Boltzmann Law
(3) Fourier's Law
(4) Ohm's Law
Which of the following is an example of heat transfer by conduction?
(1) Heating water in a pot
(2) Sunlight warming your face
(3) Touching a hot metal spoon
(4) Warm air rising near a heater
Which of the following is NOT a factor affecting the rate of heat transfer by conduction?
(1) Area of cross-section
(2) Thickness of material
(3) Color of material
(4) Thermal conductivity
Which of the following is NOT a method of heat transfer?
(1) Conduction
(2) Radiation
(3) Reflection
(4) Convection
Convection currents are set up in fluids because of differences in ________.
Fill in the blank: The transfer of heat by the movement of a fluid is called ________.
Fill in the blank: The transfer of heat from the Sun to the Earth takes place by ________.
Heat transfer by conduction occurs mainly in ________.
True or False: All objects emit thermal radiation.
True or False: Gases are generally better conductors of heat than solids.
True or False: In a vacuum, heat can be transferred by convection.
True or False: The process of boiling water involves both conduction and convection.
