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

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Question 106

When tiny smoke particles suspended in air are viewed through a microscope, they are observed to be in continuous, rapid, random motion. What causes a smoke particle to move in this way?

A

Convection currents in the air

B

Gravitational forces acting unevenly on the smoke particles

C

Uneven bombardment on different sides by rapidly moving air molecules

D

Collisions between the smoke particles themselves

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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