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

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Question 127

Brownian motion can be observed when pollen grains suspended in water are viewed under a microscope.

What causes the pollen grains to move in a random, jerky manner?

A

The pollen grains are carried by convection currents in the water.

B

The pollen grains are struck by constantly moving, invisible water molecules.

C

The pollen grains have different sizes and sink at different speeds.

D

The pollen grains repel each other due to static electrical charges.

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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