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Flashcards on Heat and Heat Transfer
Click on the flashcard to see the answer
What is heat?
The transfer of thermal energy from a warmer object to a cooler object.
What are the three methods of heat transfer?
Conduction, convection, and radiation.
Define conduction.
The transfer of heat through direct contact between particles of a substance.
What is convection?
The transfer of heat through the movement of fluids (liquids or gases).
Explain radiation.
The transfer of heat through electromagnetic waves.
What is thermal equilibrium?
When two objects are at the same temperature and no heat flows between them.
What is specific heat capacity?
The amount of heat energy required to raise the temperature of a substance by 1 degree Celsius.
What is the formula for calculating heat transfer?
Q = mcΔT
What is an insulator?
A material that does not easily allow heat to flow through it.
What is a conductor?
A material that allows heat to flow through it easily.
What is a heat sink?
A device or substance that absorbs and dissipates excess heat.
What are examples of good conductors?
Metals such as copper and aluminum.
What are examples of good insulators?
Materials like wood, rubber, and plastic.
How does heat affect the particles in a substance?
Heat energy causes particles to move faster and increases their kinetic energy.
What is the zeroth law of thermodynamics?
If two objects are in thermal equilibrium with a third object, they are also in thermal equilibrium with each other.
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Test Your Knowledge
Which method of heat transfer does not require a medium?
Conduction
Convection
Radiation
Temperature
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Which material is a good conductor of heat?
Wood
Copper
Plastic
Rubber
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What happens to the particles in a substance when heat is added?
They become smaller
They move faster
They stop moving
They change color
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Which of the following is an example of convection?
Boiling water in a pot
Touching a hot pan
Feeling the warmth of a fire
Sunlight heating the Earth
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What is the formula for calculating heat transfer?
Q = mcΔT
F = ma
E = mc²
A = πr²
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Which material is a good insulator of heat?
Rubber
Aluminum
Copper
Steel
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What is the transfer of heat through electromagnetic waves called?
Conduction
Convection
Radiation
Evaporation
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Which object absorbs and dissipates excess heat?
Conductor
Heat sink
Insulator
Thermometer
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What is the amount of heat energy required to raise the temperature of a substance by 1 degree Celsius called?
Specific heat capacity
Thermal equilibrium
Heat transfer
Kinetic energy
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When two objects are in thermal equilibrium, what happens?
No heat flows between them
They melt
They freeze
They explode
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