Skip to content

Course home

Sign up

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

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129
Question 61

Tiny smoke particles suspended in air are illuminated and viewed through a microscope. The particles are seen to move continually and randomly.

What is the reason for this random movement?

A

The smoke particles are bombarded by randomly moving air molecules.

B

The smoke particles are moved by random convection currents in the air.

C

The smoke particles are pushed by the random rays of light reflecting off them.

D

The smoke particles are moved by the random vibration of their own atoms.

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