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WorksheetsHeat and its effects
Total questions: 17
Worksheet time: 8mins
1. An example of the conductors of heat is
Aluminium
Wood
Plastic
An example of the conductors of heat is
Plastic
Iron
Wood
An example of insulators of heat is
Wood
Iron
Aluminium
The hotness of an object is determined by its __ __
Neither a or b
Pressure
Both a and b
Temperature
Temperature of boiling water cannot be measured by a __ __ thermometer.
Celsius
Clinical
Temperature is measured in degree ___ _.
Clinical
Celsius
. Clothes of ___ _ colours absorb heat better than clothes of light colours.
Dark
Brown
Orange
Light
Land breeze blows during
Winter
Summer
Night
Day
Dark coloured clothes are preferred during
night
summer
day
winter
Dark coloured clothes are preferred during
night
summer
day
winter
One litre of water at 30°C is mixed with one litre of water at 50°C. The temperature of the mixture will be
more than 50°C but less than 80°C
between 30°C and 50°C
80°C
20°C
An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will
increase the temperature of both.
not flow from iron ball to water or from water to iron ball.
flow from water to iron ball.
flow from iron ball to water
. A wooden spoon is dipped in a cup of ice cream. Its other end
does not become cold.
becomes cold by the process of convection.
becomes cold by the process of radiation.
becomes cold by the process of conduction.
Stainless steel pans are usually provided with copper bottoms. The reason for this could be that
copper is a better conductor of heat than the stainless steel.
such pans appear colourful.
copper is easier to clean than the stainless steel.
copper bottom makes the pan more durable.
The capacity to do work is called:
Heat
Energy
work
none of the above
The process of transfer of heat in solids is called as:
Convection
Radiation
Conduction
none of the above
Why conduction is only possible in solids:
particles of solids are closely packed
heat is transferred from the hotter end to the colder end of an object.
heat is transferred from the colder end to the hotter end of an object.
both A and B
