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WorksheetsConduction, Convection, Radiation
Total questions: 20
Worksheet time: 10mins
What is conduction?
It is the transfer of heat between substances through fluid movements.
It is the transfer of heat through electromagnetic waves, and does not rely upon any physical contact.
It is the transfer of heat between substances when in physical contact with each other.
None of the above
Which of these is an example of conduction?
The process of how heat is transferred in conduction: When a fluid is heated from below, thermal expansion takes palce. The lower layers of the fluid, which are hotter become less dense. And colder, denser fluids replaces it. This process is repeated when this part also gets heated and rises up to be replaced by the colder upper layer.
True
False
In which direction does heat travel?
hot to cold
cold to hot
none of the above
In which medium does conduction occur in?
solids, liquids
solids, liquids, gases
liquids, gases
solids, gases
What is the difference between a conductor and an insulator?
A conductor doesn't allow free flow of electons, whereas an insulator allows it.
A conductor allows free flow of electrons, wherears an insulator doesn't.
None of the above
What is convection?
It is the transfer of heat between substances through fluid movements.
It is the transfer of heat between substances when in physical contact with each other.
It is the transfer of heat through electromagnetic waves, and does not rely upon any physical contact.
None of the above.
Which of these is an example of convection?
When does convection occur?
It occurs when certain forms of electromagnetic radiation is emitted or absorbed.
It occurs when a substance is heated, and particles gain energy, causing them to vibrate more. These molecules then bump into nearby particles and transfer some energy to them.
It occurs when warmer areas of a liquid or gas rise to cooler areas of the certain substance.
None of the above
In which medium does convection occur in?
solids, gases
liquids, gases
solids, liquids
solids, liquids, gases
When something is heated, does it usually expand or contract?
It usually expands
It usually contracts
Other
Complete the following sentence:
Hot air _____, cold air _____.
sinks; rises
rises; rises
rises; sinks
sinks; sinks
What is radiation?
It is the transfer of heat between substances when in physical contact with each other.
It is the transfer of heat through electromagnetic waves, and does not rely upon any physical contact.
It is the transfer of heat between substances through fluid movements.
None of the above.
Which of these is an example of radiation?
Radiation occurs when microwaves, infrared radiation, visible light, or other form of electromagnetic radiation is emitted or absorbed.
True
False
Which of the following surfaces radiate heat best?
white and polished
white and matte
black and polished
black and matte
In radiation, mass is exchanged and medium is required to transfer heat energy.
True
False
conduction, convection or radiation?
Conduction
Convection
Radiation
All of the above
conduction, convection or radiation?
Conduction
Convection
Radiation
All of the above
conduction, convection or radiation?
Conduction
Convection
Radiation
All of the above
