thermal energy and heat

By increasing the kinetic energy of particles, their .....................increases.

• weight

• temperature

• volume

• mass

Heat is transferred through solids by ..................... .

• conduction and convection

• radiation only

• radiation and convection

• conduction only

Heat is transferred through copper and iron by ..................... .

• convection

• radiation

• conduction

• all the above

Heat is transferred by convection through ....................... .

• gases only

• liquids only

• gases and liquids

• solids only

The freezer of the fridge is found at the top of the fridge, because the cold air ........................... .

• falls down to be replaced by hot air

• is a bad conductor of heat

• is a good conductor of heat

• none of the above

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

• conduction and radiation

• radiation and convection

• conduction and convection

• radiation only

If you sit down under a lighted electric lamp, heat is transferred to you by ........................ .

• convection only

• radiation only

• conduction only

• convection and radiation

Heat transfer by radiation takes place through ......................... .

• liquids only

• gases only

• material media and non-material ones

• metals only

Heat is transferred through space by ...................... .

• convection

• conduction

• radiation

• conduction and convection

The transfer of heat which does not need any material medium is by .......................... .

• conduction

• convection

• radiation

• convection and radiation