HW 5.1: Heat Transfer

What is the primary method of heat transfer in solids?

• Convection

• Radiation

• Conduction

• Diffusion

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NGSS.MS-PS3-4

Why does conduction primarily occur in solids?

• Solids have high energy levels

• Particles in solids are closely packed

• Solids are good conductors of radiation

• Solids do not have particles

Tags

NGSS.MS-PS3-4

What is thermal conductivity?

• The ability to transfer sound energy

• The rate of heat energy transfer in an object

• The process of cooling objects rapidly

• The ability to absorb light energy

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NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which of the following is/are generally considered a good conductor?

• Plastic

• Wood

• Metals

• Air

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NGSS.MS-PS3-3

NGSS.MS-PS3-4

What is the primary mode of heat transfer in fluids?

• Radiation

• Conduction

• Convection

• Absorption

In convection, what causes particles to rise in a heated fluid?

• The kinetic energy is naturally converted into potential energy

• Heated particles expand and become less dense

• Heated particles actually sink

• Kinetic energy reduces in heated particles

What is a convection current?

• A constant flow of particles in solids

• Movement of fluids due to density differences caused by heat

• The transfer of heat via infrared waves

• The absorption of energy in a vacuum

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NGSS.MS-ESS2-6

Which method of heat transfer can occur in a vacuum?

• Conduction

• Convection

• Radiation

• Diffusion

Radiation is the transfer of heat primarily through which of the following?

• Radio waves

• Infrared waves

• Gamma rays

• X-rays

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NGSS.MS-PS4-2

Why does your hand feel hot over a barbecue without touching it?

• Particles are conducting heat to your hand

• Infrared radiation is absorbed by your hand

• The air particles carry energy through convection

• Heat is conducted through the air

Tags

NGSS.MS-PS4-2