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2.1.2a Particle structure and motion in solids, liquids and gases

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Question 51

What causes the random, jittery movement (Brownian motion) of tiny pollen grains suspended in water?

A

water molecules colliding with the pollen grains

B

convection currents within the water due to temperature differences

C

pollen grains actively swimming using cilia

D

chemical reactions between the pollen grains and the water molecules

Markscheme

2.1.2a Particle structure and motion in solids, liquids and gases Questions

  1. IGCSE
  2. /Physics
  3. /2.1.2a Particle structure and motion in solids, liquids and gases

151 exam-style questions on CIE IGCSE Physics 2.1.2a Particle structure and motion in solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.

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