On a cold winter day, a student inflates a basketball outdoors. When they bring the basketball inside a warm room, the temperature of the air inside it rises and the pressure increases. There are no air leaks.
Why does the pressure increase?
The air molecules inside the basketball move faster.
The air molecules inside the basketball stop moving.
The volume of the air inside the basketball decreases.
The volume of the air inside the basketball increases.
321 exam-style questions on CIE IGCSE Physics 2.1 Kinetic particle model of matter, covering 2.1.1 States of matter and changes of state, 2.1.2a Particle structure and motion in solids, liquids and gases, 2.1.2b Gas pressure and particle collisions, 2.1.2c Brownian motion, 2.1.3a The absolute scale of temperature, and 2.1.3b Pressure, volume and temperature of a gas. Each one has a worked solution and a mark scheme showing where the marks go.