Heat Energy

Heat transfers through copper rod by ...................

• conduction

• convection

• radiation

Heat transfers from heater by .....................

• conduction and radiation

• convection and radiation

• convection

• radiation

Plants converts solar energy into ....................enrgy

• light

• kinetic

• chemical

• electric

Solar battery changes the solar energy into ...........................

• kinetic

• heat

• electric

• light

The idea of putting the freezer on the top of the fridge depends on transfer of heat by .....................

• radiation

• convection

• conduction

As the speed of the objects increase, their temperature .................

• don't change

• decrease

• increase

Solar oven is ........................................ device.

• polluting

• non-polluting

In washing machines, the electric energy is changed into ......................energy.

• potential

• kinetic

• heat

Heat of the sun is transferred from the sun to the Earth by.......................

• radiation

• convection

• conduction

• 55

• 70

• 45

• 50