Physics 1

P1

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How is heat transferred?
Radiation, conduction or convection
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Heat radiation is the transfer of heat energy by...?
Infrared radiation
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Conduction and convection involve the transfer of energy by...?
Particles
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When does convection occur?
Convection occurs when the more energetic particles move from the hotter region to the cooler region and take their heat energy with them
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What is condensation?
Condensation is when gas turns to liquids
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What is evaporation?
Evaporation is when liquid turns to gas
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What are 5 examples of insulation?
loft insulation, hot water tank jacket, double glazing, draught-proofing and cavity wall insulation
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What is the equation for payback time?
Payback time= initial cost/ annual saving
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What is the equation for specific heat capacity?
Energy transferred= mass x specific heat capacity x temperature change (E= m x c x 0)
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List the nine types of energy
electrical, light, sound, kinetic, nuclear, thermal, gravitational potential, elastic potential and chemical energy
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Equation for efficiency?
Efficiency= useful energy out/ total energy in
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What are the units for energy?
Kilowatt- hours (kWh)
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4 examples of non renewable resources
coal, oil, natural gas and nuclear fuels
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8 examples of renewable resources
wind, waves, tides, hydroelectric, solar, geothermal, food and biofuels
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How is electricity distributed?
Via the national grid
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Why is it much easier to boost the voltage up really high?
Because having high current makes you lose loads of energy through the heat in the cables
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List the EM waves
Radio, micro, infrared, visible, ultra violet, X- Ray and gamma
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Other cards in this set

Card 2

Front

Heat radiation is the transfer of heat energy by...?

Back

Infrared radiation

Card 3

Front

Conduction and convection involve the transfer of energy by...?

Back

Preview of the front of card 3

Card 4

Front

When does convection occur?

Back

Preview of the front of card 4

Card 5

Front

What is condensation?

Back

Preview of the front of card 5
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