Energy Transfer

Which of the following correctly identifies a method of heat transfer that will happen in this situation?

• Heat will be transferred from the hot plate to the thermometer through radiation.

• Heat will be transferred from the beaker to the thermometer through convection.

• Heat will be transferred from the hot plate to the beaker through convection.

• Heat will be transferred from the thermometer to the beaker through conduction.

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Radiation is a method of thermal energy transfer. It refers to the transfer of heat energy that moves–

• through empty space.

• when objects touch.

• only through solids.

• in the motion of fluids.

Conduction can only occur between two objects when–

• one object is less dense than the other.

• both objects are in physical contact with each other.

• one of the objects is made of a metal.

• both objects are exactly the same temperature.

Which of the following is an example of a situation in which an egg is receiving thermal energy through convection?

• Which of the following is an example of a situation in which an egg is receiving thermal energy through convection?

• An egg is fried in a metal pan on the stove.

• An egg cracked on a hot sidewalk starts to cook.

• The egg is cooked in a pot of water on the stove.

A student is melting a sugar cube over a flame, as shown in the picture provided. What energy transfer is causing the sugar cube to melt?

• Candle to spoon – conduction

  Spoon to sugar cube – conduction

• Candle to spoon – radiation

  Spoon to sugar cube – conduction

• Candle to spoon – conduction

  Spoon to sugar cube – convection

• Candle to spoon – convection

  Spoon to sugar cube – conduction

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Thermal energy is transferred when two objects of different temperatures touch.

• Conductors

• Conduction

• Radiation

• Convection

Objects that can transfer energy easily.

• Conductors

• Conduction

• Convection

• Insulators

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Thermal energy is transferred through space.

• Conduction

• Radiation

• Convection

• Temperature

Transfer of energy through circular motion caused by heating and cooling in fluids (liquids and gases).

• Conduction

• Convection

• Radiation

• Conductors

Feeling warmth on your hands when you hold them near a campfire is an example of ____________________________.

• radiation

• conduction

• convection

• conductors