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Match it! Select the correct answer from the pull down...Good luck!
A 1500W hairdryer is on for 30 mins. How much energy is transferred in kWhs?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
The process of warm air rising cooling and sinking is known as what?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
What is the name for the transfer of energy by vibrations?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
Cavity wall insulation costs £3000 and saves £120 a year. What is the payback time?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
Through what process does heat energy from the sun reach Earth?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
What does a step up transformer do?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
Which of these applies to silver materials?
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
How much energy is needed to heat up 2kg of water by 10 degrees. (c=4000)
Convection
80,000J
Poor emitters of heat energy
0.75
Increases voltage and decreases current
Radiation
Conduction
25 years
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