Types of Heat transfer

What is the primary method of heat transfer in fluids (gases and liquids)?

(Yes--air is a fluid!)

• Conduction

• Convection

• Radiation

• Insulation

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DOK Level 2: Skill/Concept

When you touch a hot pot, the heat is transferred to your hand primarily by:

• Convection

• Radiation

• Conduction

• Reflection

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DOK Level 2: Skill/Concept

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

• Heating a tin can with a blowtorch

• Lying under the sun to get warm

• Using a heating pad on sore muscles

• Cooking soup in a pot

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DOK Level 2: Skill/Concept

Which type of heat transfer does not require matter?

• Conduction

• Convection

• Radiation

• All require matter

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DOK Level 2: Skill/Concept

How does a thermos (vacuum flask) prevent heat loss?

• By conduction only

• By convection only

• By radiation only

• By minimizing conduction, convection, and radiation. (It's a great insulator!)

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DOK Level 2: Skill/Concept

When heat moves from a warmer object to a cooler one, it's called ________________.

• Heat transfer

• Temperature

• kinetic energy

• movementum

What is the primary method of heat transfer in solids?

• Conduction

• Convection

• Radiation

• Insulation

Which of the following most closely describes thermal energy?

• Electrons moving across a conductor.

• Molecules in the air vibrating to produce sound.

• Energy that is given off as heat from the vibration of molecules.

• A type of energy transmitted through light waves.

Bob is ironing a shirt. Thermal energy is transferred to the shirt when ironing by _________________.

• conduction

• convection

• radiation

• none of the above

Which direction will the heat flow while this person holds a hot cup of tea?

• from the cup to her hand
• from her hand to the cup
• no heat is transferred