HEAT 9.1 & 9.2 ( SCIENCE FORM 2 )

What is the meaning of temperature?

• A form of energy

• The degree of hotness or coldness of an object

• Degree of movement of the particles in a matter

• Amount of heat

Heat is measured in _____

Heat Flow occurs in

• Convection

• Radiation

• Conduction

• Absorption

The process of heat transfer from hotter regions to colder regions through a solid medium

• Conduction

• Convection

• Radiation

The circulating stream that rises and falls continuously is known as

• Convection current

• Conduction Current

• Electric current

• Radiation current

Heat Flow in Natural Phenomena using Convection

• Air Ventilation

• Sea Breeze

• Land Breeze

• Warming of the Earth by Sun

What occur in this image?

• Sea Breeze

• Land Breeze

Which of these are heat conductors?

• Mercury

• Metal

• Wood

• Fibreglass

Which of these are Heat Insulators?

• Oven gloves

• Fibreglass

• Polysterene

• Metal

What does it mean by thermal equilibrium?

• No net transfer of heat energy between the objects

• Two objects which are in thermal contact

• Exchange of heat energy