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Physics session 2 part 2 > P6 > Flashcards

P6 Flashcards

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1
Q

Radiation

A

When heat travels as waves we say it is traveling by radiation. No particles are needed. Radiation can travel through a vacuum. The transfer of heat by Infrared waves.

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2
Q

Infrared radiation

A

Another word for heat radiation

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3
Q

Temperature

A

How hot or cold something is

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4
Q

Thermal energy

A

AKA heat energy. Energy that moves from one object to another causing its temperature to rise

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5
Q

Thermal capacity

A

How much energy is needed to raise the objects temperature by one degree Celsius

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6
Q

Specific heat capacity

A

How much energy is needed to raise the temperature of 1kg of the substance by 1 degree Celsius

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7
Q

Latent heat

A

The energy that is used to change a substance’s state but not increase it’s temperature. It is the energy that breaks binds between particles

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8
Q

Latent heat of fusion

A

The latent heat when describing solid/ liquid changes

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9
Q

Latent heat of vaporization

A

Latent heat when describing liquid/ gas changes

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10
Q

Ways for heat to be transferred

A

1) radiation
2) conduction- caused by radiation
3) convection currents- movement of air particles

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11
Q

Unit of measurement for thermal capacity

A

J/degree Celsius

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12
Q

Unit of measurement for specific heat capacity

A

J/kg degree Celsius

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13
Q

Equation for thermal capacity

A

Heat input/ change in temp

Q/delta t

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14
Q

Equation for specific heat capacity

A

Q=m X c X delta T

Q=amount of energy added
m= mass of substance you are hearing
c= specific heat capacity of the substance you are heating
Delta T= change in temperature after it had been heated.

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15
Q

Conduction

A

Heat traveling due to the vibration of particles

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16
Q

Equation for kinetic energy

A

KE =1/2 m v squared

Half the mass times volume squared

17
Q

Equation for potential energy

A

PE= mgh

Mass times gravity times height

18
Q

Equation for efficiency

A

Efficiency= useful energy out/ total energy in times one hundred (for percentage)

19
Q

Equation for thermal capacity

A

E= delta T times thermal capacity

20
Q

Unit of measurement for thermal capacity

A

J/ degrees Celsius

21
Q

Main method of heat transfer in fluids

A

Convection

22
Q

Convection

A

When a fluid (liquid or gas) is heated it expands, becomes less dense and rises.
The flow of heat from places of higher temperature to places of lower temperature by movement of particles themselves.

Physics session 2 part 2 (3 decks)

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