Skip to content

Course home

Sign up

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

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129
Question 41

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

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

A

The pollen grains are colliding with fast-moving, invisible water molecules.

B

Convection currents within the water carry the pollen grains.

C

The pollen grains are alive and swimming in the water.

D

Mutual gravitational attraction between the pollen grains.

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.

Question bank