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Worksheetsphysics (heat)
Total questions: 20
Worksheet time: 10mins
Main SI unit of heat ?
Kelvin (K)
calorie (C)
kilocalorie (KC)
joule (J)
what are the three types of heat transfer system ?
conduction,convection,filtration
convection, radiation, coduction
osmois, burner, convection
conduction, radiation ,conductor
different liquids expand by the same amounts for the same rise in temperature ?
TRUE
FALSE
liquids do not expand
none of above
which is a better conductor of heat ? between ,
iron and glass
iron
glass
both are good
both are bad
what are insulators
substances which allow heat to pass
substances which does not allow heat to pass
it is a metal rod present between heat
it is a type of material used for furniture
on a cold day we feel cool in steel chair more than the wooden chair ?
because steel is a bad conductor of heat
because wood is a good conductor of heat
because steel is a good conductor of heat
because wood is a bad conductor of heat
how are ocean currents formed ?
by coduction currents
by radiation
by convection
by convection currents
what does temperature tells us ?
hotness
coldness
both of the options above
none of the above
number of divisions present in fahrenheit scale ?
100
180
273
212
due to motion molecules have -------- and due to force of attraction molecules have ------------ .
kinetic , muscular
kinetic , potential
potential , potassium
heat , kinetic
black paper absorbs all and reflects some amount ?
TRUE
FALSE
none of the above
which of the following objects produce heat ?
heater
light bulb
lighter
all of the above
at night the sea cools much faster than the land ?
TRUE
FALSE
none of the above
radiation can not happen in vacuum ?
TRUE
FALSE
none of the above
what type of expansion does gases have ?
cubical expansion
linear expansion
superficial expansion
all of the above
which expansion does solid have
cubical expansion
superficial expansion
linear expansion
all of the above
between which degree water contracts ?
0 to 4 degree
0 to 5 degree
0 to 3 degree
0 to 2 degree
which transfer of heat does transfers from a hot end to a cold end from molecule to molecule of the medium ?
conduction
convection
radiation
all of the above
which of them is a conductor of heat ?
mud
wool
cotton
aluminium
which of them is a insulator ?
wool
both of the options above
cotton
none of above
