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

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Question 126

Brownian motion can be observed under a microscope when looking at pollen grains suspended in water.

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

A

Convection currents in the water carry the pollen grains.

B

Pollen grains are hit by water molecules moving randomly at high speeds.

C

Pollen grains have different masses and sink at different speeds.

D

Pollen grains collide with the glass slide.

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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