Convection and Conduction

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

Tags

NGSS.MS-PS3-4

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

• conduction

• convection

• radiation

• Insolation 

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

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

• convection

• conduction

• radiation

Tags

NGSS.MS-PS1-4

The type of heat transfer that creates currents in water is called ________.

• conduction

• convection

• radiation

The diagram shows a refrigerator. The cooling unit is placed at the top. The cooling unit cools the air near it. What happens to the density of the air as it cools, and how does it move?

• The density of air increases. It moves down.

• The density of air increases. It moves up.

• The density of air decreases. It moves down.

• The density of air increases. It moves up.

Tags

NGSS.MS-PS1-4

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.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

In convection, COOL air

• Rises

• Sinks

Tags

NGSS.MS-ESS2-6

In convection, WARM air

• Rises

• Sinks

Tags

NGSS.MS-ESS2-5

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

• Conduction currents

• Radiation currents

• Insulation currents

• Convection currents

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

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.

Tags

NGSS.MS-PS1-4