WorksheetsHeat
Total questions: 10
Worksheet time: 20mins
............ is movement of energy from a warmer object to a cooler object.
Energy
Electricity
Heat
Conductor
Which options are better thermal conductors
a silver spoon
air bag
wooden table
copper pot
(a) is an optical illusion caused by passing of light through cool air to warm air.
Conduction is the transfer of thermal energy between ..........................................
In which way does thermal energy travels the fastest?
Convection
radiation
conduction
convection and radiation
transfer of energy in moving gases or liquids is called ........
Convection
Conduction
Radiation
Insulator
we put a spoon in a hot tea cup and the spoon gets hot after a few minutes. this type of thermal energy transfer?
Convection
Conduction
Conductor
Thermal conductor
How many types of thermal energy production have you learned in your book?
2
4
3
10
Which one of thermal energy production ways can be bad in machines?
Conduction
Flow of electricity
Mixing and burning
Friction
Why do the LED light bulbs use less energy.
because they produce more light less heat
because they produce less light more heat
because they produce equal amount of light and heat
because they just produce light and no heat
