S8P2.d: Exploring Heat Transfer Methods

When Zoe touches a metal spoon that has been sitting in a pot of hot soup, she feels the heat. Which of the following best describes this process?

• Heat transfer through electromagnetic waves.

• Heat transfer through direct contact between molecules.

• Heat transfer through fluid motion.

• Heat transfer through vacuum.

Explain how convection currents are formed in a pot of boiling water.

• The water molecules at the bottom of the pot cool down and sink.

• The water molecules at the bottom of the pot heat up, become less dense, and rise.

• The water molecules at the top of the pot heat up and sink.

• The water molecules at the bottom of the pot heat up and sink.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

Which of the following is an example of radiation?

• Heat from a stove warming a pot.

• Heat from the sun warming your face.

• Heat from a hot liquid warming a spoon.

• Heat from a heater warming the air in a room.

Anna wants to demonstrate the effect of heat transfer on molecular motion in a metal rod. How can she design her experiment?

• Place the rod in a freezer and observe the temperature change.

• Heat one end of the rod and measure the temperature at various points along the rod over time.

• Submerge the rod in water and measure the water temperature.

• Place the rod in sunlight and measure its temperature.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Grace is observing a pot of water on the stove. What happens to the molecular motion of the water vapor as the water is heated?

• The molecules move slower and closer together.

• The molecules move faster and spread apart.

• The molecules stop moving.

• The molecules move slower and spread apart.

Tags

NGSS.MS-PS1-4

How does the process of conduction differ from convection?

• Conduction involves the movement of fluids, while convection involves direct contact.

• Conduction involves direct contact, while convection involves the movement of fluids.

• Both involve the movement of fluids.

• Both involve direct contact.

Charlotte is making a cup of hot coffee and decides to stir it with a metal spoon. Predict the outcome of this action.

• The spoon will cool down the coffee.

• The spoon will heat up and eventually reach the same temperature as the coffee.

• The spoon will remain at room temperature.

• The spoon will become colder than the coffee.

Tags

NGSS.MS-PS1-4

Which method of heat transfer is primarily responsible for the warmth felt from a campfire?

• Conduction

• Convection

• Radiation

• Evaporation

Analyze the effect of heat transfer on the molecular motion of a liquid when it is cooled.

• The molecules move faster and spread apart.

• The molecules move slower and come closer together.

• The molecules stop moving completely.

• The molecules move faster and come closer together.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-4

What is the primary reason that heat transfer continues until two substances reach the same temperature?

• To maintain the energy balance in the universe.

• Because heat naturally flows from cooler to warmer substances.

• Because heat naturally flows from warmer to cooler substances.

• To increase the temperature of both substances.

Tags

NGSS.MS-PS3-4