Energy Transfer and Heat Concepts

Mr. Graic guides seventh graders through lesson three on thermal energy and heat. The video covers vocabulary definitions, key concepts, and critical thinking questions. Students are instructed to complete 10 questions before checking answers. The lesson explains heat transfer methods: conduction, convection, and radiation, and compares heat and temperature. A photo analysis helps identify energy transfer types. The video concludes with a critical thinking question about convection in salads.

What is the process called when heat is transferred from a hot object to a cold object?

• Convection

• Radiation

• Conduction

• Evaporation

Which of the following best describes thermal energy?

• Energy transferred between objects

• Total kinetic energy of particles in a substance

• Average kinetic energy of particles

• Energy from electromagnetic waves

How does conduction transfer heat?

• Through sound waves

• Through electromagnetic waves

• Through direct contact

• Through moving currents

What is the main difference between heat and temperature?

• Heat is a form of energy, temperature is not

• Temperature measures energy transfer, heat does not

• Temperature is the average kinetic energy, heat is energy transfer

• Heat is the total energy, temperature is energy transfer

What happens when two objects at different temperatures come into contact?

• The colder object becomes colder

• No change occurs

• They reach the same temperature

• The hotter object becomes hotter

In the photo example, what type of energy transfer occurs when the oven rack touches the kettle?

• Evaporation

• Conduction

• Convection

• Radiation

What type of energy transfer is demonstrated by flames not touching the kettle?

• Conduction

• Evaporation

• Radiation

• Convection

What is the relationship among temperature, heat, and thermal energy?

• Temperature is energy transfer, heat is average energy, thermal energy is total energy

• Temperature is the total energy, heat is average energy, thermal energy is energy transfer

• Temperature is average energy, heat is energy transfer, thermal energy is total energy

• Temperature is energy transfer, heat is total energy, thermal energy is average energy

Why can't salads undergo convection?

• Salads are too dense

• Salads are too cold

• Particles in salads cannot move freely

• Salads do not have enough energy

What should students do if they need to make corrections?

• Ask a friend for help

• Ignore the mistakes

• Follow teacher directions

• Guess the answers