What happens to the temperature of a gas when it is compressed quickly (Increasing the pressure of a gas (physics only) (HT only))

The correct answer is The temperature increases..

Definition lens: Give the precise definition, then add a context sentence that shows how it is used. This question asks: What happens to the temperature of a gas when it is compressed quickly (Increasing the pressure of a gas (physics only) (HT only)). The correct response is The temperature increases., because gas pressure comes from particle collisions with container walls. In Increasing the pressure of a gas (physics only) (HT only), the marking point should connect directly to (Physics only) (HT only) Explain why a gas may get hotter when it is compressed quickly. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Particle model and pressure, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 606 is distinct because it uses this exact question context and the definition lens rather than a generic particle-model sentence.