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Thermal convection

Last updated 3 months ago
27 questions
1

What are the three ways that thermal energy can be transferred?

1

How is thermal energy transferred between objects?

1

What occurs primarily in solids during conduction?

1

What are conductors and can you provide an example?

1

What defines a good insulator and give an example?

1

Why are gases such as air considered good insulators?

1

Why is conduction not possible through a vacuum?

1

Where does convection occur and how does it work?

1

What is a convection current?

1

Describe how a convection current works using an example.

1

How do objects emit radiation and what forms does it take?

1

Why can infrared radiation travel through a vacuum?

1

How does thermal radiation from the Sun reach Earth?

1

Which surfaces absorb the most infrared radiation and which reflect it?

1

State the three ways that thermal energy can be transferred.

1

a) Conduction happens mostly in solids.

1

Metals are good conductors.

1

Convection currents happen in liquids only.

1

Thermal energy is transferred from hotter objects to colder objects.

1

Only hot objects emit infrared radiation

1

Describe why gases are good insulators.

1

Describe how a convection current forms.

1

Describe how conduction transfers thermal energy.

1

State which colour of object absorbs infrared radiation the best.

1

Describe what a vacuum is.

1

Describe what a conductor is.

1

State which type of thermal energy transfer allows the Earth to be heated by the Sun.