which of these cannot be used to measure temperature?
- sphygmomanometer
- thermometer
- pyrometer
- spectrometer
when we heat a solid, the particles
- vibrate faster
- move around faster
- move slower
- do not move
which of these is not a method of heat transfer
- insulation
- conduction
- convection
- radiation
which method of heat transfer works best in solids?
- conduction
- convection
- radiation
- insulation
which method of heat transfer works best in liquids and gases?
- convection
- conduction
- transportation
- acceleration
heat is conducted best by
- metals
- non-metals
- liquids
- gases
which of these energy-saving methods pays for itself quickest?
- draught excluders
- double glazing
- cavity wall insulation
- loft insulation
which of these energy-saving methods takes longest to pay for itself?
- double glazing
- draught excluders
- cavity wall insulation
- loft insulation
which of these is true?
- trapped air is a good insulator
- glass is a good conductor of heat
- painting your house black keeps it cool in the summer
- double glazing saves you more energy than cavity wall insulation
heat arrives on Earth from the Sun by
- radiation
- conduction
- convection
- ultra violet rays
double glazing mainly saves energy by stopping __________ through the glass
- conduction
- convection
- radiation
- infra red rays
__________ currents happen because the air has _________, and is less dense
- convection, expanded
- convection, contracted
- conduction, expanded
- conduction, contracted
thermal radiation is also called
- infra red
- ultra violet
- gamma rays
- microwaves
which of these is true?
- black objects radiate more heat
- black objects radiate less heat
- shiny objects radiate more heat
- black surface reflect heat
latent heat is
- the energy needed to melt or boil a substance
- the energy needed to increase the temperature of a liquid
- the energy given out by a cooling liquid
- none of these
whilst melting, the temperature of ice
- stays constant at 0 degrees Celsius
- stays constant at 100 degrees Celsius
- increases slowly
- increases greatly
the change from liquid to solid is called
- freezing
- melting
- evaporation
- condensation
the change from gas to liquid is called
- condensation
- freezing
- melting
- evaporation
the law of conservation of energy was devised by
- James Joule
- John Dalton
- James Watt
- Ernest Rutherford
central heating "radiators" work mainly by
- convection
- radiation
- conduction
- conduction and radiation
in a hot object, the particles move or vibrate fast. This is called
- kinetic theory
- heat theory
- convection theory
- caloric theory
objects with black surfaces
- tend to get hotter in the sunshine than shiny objects
- tend not to get as hot in the sunshine as shiny objects
- are poor radiatiors of heat
- are poor radiators of infra red
objects with shiny surfaces
- tend not to get as hot in the sunshine as black objects
- tend to get hotter in the sunshine than black objects
- are good radiatiors of heat
- are good radiators of infra red
objects with black surfaces
- radiate heat faster than shiny objects
- radiate heat slower than shiny objects
- are poor radiatiors of heat
- are poor radiators of infra red
in a gas oven, the burner is at the bottom because
- convection currents will circulate the heat
- there needs to be room for the flames
- it is easier to make them that way
- we can clearly see the flames and know that the oven is working
clothing traps air around your body, and thus reduces heat lost by
- convection
- conduction
- radiation
- transportation
cavity wall insulation also reduces problems with
- condensation
- traffic noise
- draughts
- security
the recommended depth of loft insulation is
- 6 inches
- 2 inches
- 4 inches
- 9 inches
which of these is the best conductor of heat?
- copper
- glass
- steel
- brass
the only way that heat can cross a vacuum is by
- radiation
- conduction
- convection
- insulation