A sealed, rigid steel canister contains a fixed volume of gas. When the canister is heated, the pressure of the gas inside increases.
What is the primary cause of this increase in pressure?
The gas molecules expand and take up more space.
The gas molecules move faster, colliding more frequently and with more force against the canister walls.
The total number of gas molecules inside the canister increases.
The volume of the canister decreases, compressing the gas.
126 exam-style questions on CIE IGCSE Physics 2.1.3a The absolute scale of temperature. Each one has a worked solution and a mark scheme showing where the marks go.