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WorksheetsPhysics
Total questions: 10
Worksheet time: 5mins
The tubos inside solar heating panels use the sun radiation to warm water
Black surfaces absorb radiation well
Black surfaces conduct heat well
Black surfaces emit radiation well
Black surfaces reflect radiation well
A copper rod heated at one end.
Which statement describes how heat transfer occurs in the copper?
Energy copper molecules move from cooler end to hotter end.
Energy copper molecules move from hotter end to cooler end.
Energy free electrons move from cooler end to hotter end.
Energy free electrons move from cooler end to hotter end.
Which statement about copper explains why it is a better conductor than glass/
Atomic vibration is passed on to the neighboring copper atoms quickly
there free electrons in copper
there are density changes in copper
A solid bar is heated at one end, how is energy transferred to the other end of the bar?
Heated molecules move along the bar, carrying energy to the other end
Heated molecules move along the bar,giving energy to the others along the bar
Heated molecules vibrate more rapidly and pass energy to other molecules.
A silver cup is filled with boiling water from a kettle.
A man touches the outside surface of the cup and finds that is extremely hot.Why is the surface hot?
Convection takes place in boiling water
Silver is a good conductor of heat
The boiling water gives a latent heat
When the center of the beaker is heated, a convectional current is set up.What statement explains this?
The evaporation of water causes water molecules to move up
The expansion of water causes water molecules to move up
The water above the heater rises because it becomes less dense
The water at the sides sinks because it becomes less dense
By which process is heat conducted from the air to ice?
conduction, convection, radiation
conduction & convection only
convection & radiation only
conduction & radiation only
Two metal plates are painted, one matt (dull) and the other matt black.These are placed at equal distances from a radiant heater, the heater is turned on for 5 minutes.
Which plate absorbs more energy and which plate emits more energy at this time?
emit: black absorbs: black
emit: white absorbs: black
emit:black absorbs:white
emit: white absorbs: white
When cooking, how is heat transferred through an aluminium pan and through the handle?
A
B
C
D
Four containers are filled with water at the same temperature shown above.From which container does the water evaporate first?
A
B
C
D
