Heat Transfer

In which of the following methods of heat transfer is it necessary for the objects to be directly touching one another?

• convection

• conduction

• radiation

• all of these

Which of the following is an example of conduction?

• Campers warm up while sitting by a campfire.

• A metal spoon becomes warm when placed in a cup of hot tea.

• Leftovers become warm when reheated in the microwave.

• A dog's bowl of water warms up out in the sun.

Tags

NGSS.MS-PS1-4

Millie takes a pound of frozen hamburger meat out of the freezer and puts it into the refrigerator.

Which of the following best describes the direction of heat flow?

• from the hamburger to the air outside the refrigerator

• from the hamburger to the air outside the refrigerator

• from the hamburger to the air in the refrigerator

• from the air in the refrigerator to the hamburger

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Mario brings his hands near a fire and feels its warmth.

If the air around Mario's fireplace is still, most of the heat is reaching his hands through _______.

• radiation

• condensation

• conduction

• convection

Which of the following is an example of heat transfer by radiation?

• the Sun warming the Earth

• a fire warming a group of campers

• an electric space heater

• all of these

Tags

NGSS.MS-PS3-3

The heat from the Sun must pass through the vacuum of space before it reaches the Earth. Which process is illustrated in this example?

• conduction

• induction

• convection

• radiation

Tags

NGSS.MS-PS3-4

A hot saucepan is placed on a cold bench. Heat will flow from the saucepan to the bench until

• the saucepan has lost all of its heat.

• the bench is as hot as the saucepan was.

• the bench is warmer than the saucepan.

• the saucepan and bench are at the same temperature.

Tags

NGSS.MS-PS1-4

Heat is an exchange of internal energy from one system to another due to

• the systems having the same temperature.

• one system being gas and the other being solid.

• a temperature difference between the systems.

• one system being liquid and the other being solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which of the following is the correct definition of conduction?

• the electromagnetic radiation from the surface of an object which is due to the object's temperature

• the transmission of heat across matter

• the transfer of heat by currents within a liquid or gas

• the transmission of heat across empty space

Tags

NGSS.MS-PS1-4

Heat energy is the transfer of _______ energy.

• mechanical

• chemical

• thermal

• electrical

Tags

NGSS.MS-PS1-4