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The diagram shows some rice being boiled in a pan. What is the main methods by which thermal energy is transferred (i) through the metal pan and

(ii) through the water?

• (i) conduction (ii) conduction

• (i) convection (ii) convection

• (i) conduction (ii) convection

• (i) convection (ii) conduction

Convection can take place in ____________.

• solids only.

• liquids only.

• liguids and gases only.

• solids, liquids and gases.

Which of the following is an application of convection?

• The movement of heat through a metal pan to the food.

• The use of ice box to keep drinks cool.

• The sea breeze that blows from sea to land.

• The use of wool blanket to keep the body warm.

In an ocean, warm water moves __________ and cold water moves ____________.

• Down, Up
• Up, Down

In convection, COOL air

• Rises
• Sinks

What is the movement of particles, during convection, called ?

• Conduction currents

• Radiation currents

• Insulation currents

• Convection currents

Warm air rises and the cool air sinks demonstrates this type of heat transfer. 

• conduction
• convection
• radiation
• Insolation 

Where do we see conduction in a pot of boiling water on the stove?

• The water heats up by touching the hot, metal pot.

• The steam from the hot water rises out of the pot.

• The heat from the fire can be felt on all sides.

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

• hotter to colder

• colder to hotter

• hotter to hotter

• colder to colder

The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of ________.

• convection

• conduction

• radiation