Which of these formulae is accurate for calculating ENERGY transferred? [*BE CAREFUL; there are many versions of this question but with different UNITS!]
Energy (J) = power (W) x time (s) Energy (kWh) = power (kW) x time (h)
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Which of these formulae shows the calculation for GRAVITATIONAL POTENTIAL ENERGY?
Weight x Height Mass x Gravitational Field Strength x Height
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Which of these is a DISADVANTAGE of using WATER POWER (such as waves, tides, hydroelectricity)?
It can destroy the HABITAT of marine and estuary wildlife
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Which of these formulae calculates the ELASTIC POTENTIAL energy of a spring?
E E = 1/2 ke 2
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Which of these statements about ENERGY is TRUE?
An INEFFICIENT machine loses MORE useful energy Potentially useful energy is often wasted as heat energy An EFFICIENT machine loses LESS useful energy
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If there are ENERGY TRANSFERS in a CLOSED system, there is no net change to the…
total energy in that system
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Which calculation would be used to determine the amount of ENERGY associated with a MOVING object?
Kinetic energy = ½ x mass x velocity² [KE = ½mv²]
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Which of these are ADVANTAGES of using fossil fuels?
They are (currently) easily available
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Other cards in this set
Card 2
Front
Which of these formulae shows the calculation for GRAVITATIONAL POTENTIAL ENERGY?
Back
Weight x Height Mass x Gravitational Field Strength x Height
Card 3
Front
Which of these is a DISADVANTAGE of using WATER POWER (such as waves, tides, hydroelectricity)?
Back
Card 4
Front
Which of these formulae calculates the ELASTIC POTENTIAL energy of a spring?
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