Metals are good thermal conductors mainly because they contain
Salam Academy Original Practice · Proposed mark scheme
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12 questions
Convection can happen in
Salam Academy Original Practice · Proposed mark scheme
Which surface is the best emitter of infrared radiation?
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Energy reaches the Earth from the Sun by
Salam Academy Original Practice · Proposed mark scheme
A house loses energy at a rate of W. Calculate the energy lost in hour, in MJ.
Salam Academy Original Practice · Proposed mark scheme
Saucepan handles are often made of plastic because plastic is
Salam Academy Original Practice · Proposed mark scheme
Shiny, silver surfaces are
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The vacuum between the walls of a vacuum flask reduces energy transfer by
Salam Academy Original Practice · Proposed mark scheme
A heater is placed near the floor of a room. It warms the whole room mainly by
Salam Academy Original Practice · Proposed mark scheme
Loft insulation reduces energy loss by W. Calculate the energy saved in one day ( hours), in kWh.
Salam Academy Original Practice · Proposed mark scheme
On a sunny day, a sea breeze blows from the sea onto the land because
Salam Academy Original Practice · Proposed mark scheme
Double glazing reduces the rate of energy loss through a window from W to W. Calculate the energy saved in hours, in kWh.
Salam Academy Original Practice · Proposed mark scheme