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2.3.2 Convection

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Question 26

A beaker contains some cold water. A blue crystal is placed on the bottom of the beaker. The beaker is gently heated from beneath the crystal. The crystal dissolves in the water, and the blue color spreads upwards and outwards.

Three students make the following statements about this experiment:

  • Student 1: The rising blue water is less dense than the rest of the water.
  • Student 2: Convection is the primary mechanism of heat transfer throughout the fluid in this experiment.
  • Student 3: Water is a highly effective conductor of heat, which allows thermal energy to spread rapidly.

Which students are correct?

A

1 and 2 only

B

1 and 3 only

C

2 and 3 only

D

1, 2 and 3

Markscheme

2.3.2 Convection Questions

  1. IGCSE
  2. /Physics
  3. /2.3.2 Convection

73 exam-style questions on CIE IGCSE Physics 2.3.2 Convection. Each one has a worked solution and a mark scheme showing where the marks go.

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