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Worksheetsgrade 6 , con 5 , lesson 3&4
Total questions: 12
Worksheet time: 6mins
Metals ............
don't allow heat to flow through them.
allow heat to flow through them.
are heat insulators.
are bad conductors of heat.
Meteorologists are scientists who study.
water.
weather.
rocks.
cells.
Heat is transferred from a hot slide in a sunny day to your hand by........................ when you touch it.
radiation only
radiation and convection
conduction only
conduction and convection
Heat can be transferred from an electric heater to your body by when you stand near it.
radiation
radiation and conduction
conduction
conduction and convection
Heat is transferred through copper and iron by.
radiation only.
radiation and convection.
conduction only.
conduction and convection.
Thermal energy transfers from the Sun to us through the space by.
radiation only.
radiation and conduction.
conduction only.
convection and conduction.
Thermal insulators .............
can prevent the transfer of heat completely through them.
slow down the heat transfer through them.
allow heat to travel freely through them.
increase the speed of heat transfer through them.
All the following materials are considered thermal conductors, except.
copper.
iron.
wood.
aluminum.
When you put a plastic cup of water in a freezer, the water freezes and its mass.
decreases.
increases.
decreases to half.
doesn't change.
Matter................. it just changes from one state to another.
neither be created nor destroyed
can be created and destroyed
can't be created but destroyed
can be created but can't destroyed
Matter can be changed from one state to another.
by losing the thermal energy only.
by gaining the thermal energy only.
by losing or gaining the thermal energy.
by keeping the thermal energy without change.
is the best material to make handles of cooking pots, as it doesn't warm fast.
Wood
Iron
Plastic
Copper
