Heat Transfer

Students conducted an investigation of thermal energy transfer. Students placed a thermometer under a heat lamp and recorded the change of temperature every thirty seconds for two minutes in the data table. Based on the data, how was thermal energy transferred in this investigation?

• Thermal energy moved from a warmer object to a cooler object through conduction.

• Thermal energy moved from a cooler object to a warmer object through conduction.

• Thermal energy moved from a cooler object to a warmer object through radiation.

• Thermal energy moved from a warmer object to a cooler object through radiation.

An ice cube is placed onto a hot pan that is sitting on the counter top as shown below. How will the thermal energy move?

• The coldness will move from the pan to the ice cube.

• The coldness will move from the ice cube to the pan

• The heat will travel from the pan to the ice cube.

• The heat will move from the ice cube to the pan

A glass of ice water is left in the kitchen for a few hours. The ice in the glass melts leaving a glass of water. How is the heat transfer best explained?

• The energy from the ice cubes moved to the water.

• The energy moved from the glass to the ice water

• The energy moved from the water to the ice cubes.

• The energy from the ice cubes is released to the air.

A student is standing with their back facing a campfire. The student notices that their back is much warmer than their chest. They know that thermal energy is being transferred from the fire and that this method of energy transfer can happen even if no air is present. This method of energy transfer is —

• Convection

• Condensation

• Conduction

• Radiation

A student is drinking a cup of hot chocolate as they sit by a campfire on a chilly evening. They know that the cup of hot chocolate transfers thermal energy to the surrounding air. The heated air over their cup of hot chocolate expands and rises and is replaced by cooler, denser air. This method of energy transfer is —

• Convection

• Condensation

• Conduction

• Radiation

Thermal energy is being transferred to the ice cube from the pan shown above by —

• Convection

• Conduction

• Radiation

• Conservation

A beaker with water is placed on a hot plate to increase the temperature of the water. What forms of energy transfer occur while the hot plate is turned on?

• Radiation occurs where the hot plate touches the beaker. Convection occurs in the movement of the water.

• Conduction occurs where the hot plate touches the beaker. Radiation occurs in the movement of the water.

• Convection occurs where the hot plate touches the beaker. Conduction occurs in the movement of the water.

• Conduction occurs where the hot plate touches the beaker. Convection occurs in the movement of the water.

What type of heat transfer occurs when you touch a metal seat with your hand and the seat feels cold?

• Conduction

• Convection

• Radiation

• Condensation

A cook is boiling corn on a stove as shown in the picture. How does the process of boiling corn demonstrate conduction?

• Thermal energy is transferred from the hot burner to the pan by contact

• Thermal energy is transferred through the water when is rises and sinks.

• Thermal energy is transferred from the burner to the water by contact

• Thermal energy is transferred throughout the water as it bubbles to a boil.

What is an example of thermal energy transfer by radiation?

• A metal spoon becoming hot in a bowl of soup

• Water boiling in a pot on a burner on the stove

• The Sun heating the surface of the Earth

• A hot air balloon releasing gas and rising