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2.3.4 Consequences of thermal energy transfer

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Question 4

A vacuum flask contains a double-walled glass vessel where the air between the walls has been removed to create a vacuum.

How does this vacuum help to keep the contents of the flask hot?

A

It reduces thermal energy transfer by radiation.

B

It prevents thermal energy transfer by conduction and convection.

C

It prevents thermal energy transfer by conduction only.

D

It increases the rate of convection within the vacuum space.

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2.3.4 Consequences of thermal energy transfer Questions

  1. IGCSE
  2. /Physics
  3. /2.3.4 Consequences of thermal energy transfer

62 exam-style questions on CIE IGCSE Physics 2.3.4 Consequences of thermal energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.

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