An aerospace engineer is testing a new drone design inside a wind tunnel. The wind tunnel is set to different speeds: 0 m/s, 5 m/s, 10 m/s, and 15 m/s. For each speed, the engineer records the electrical power consumption (measured in watts) required for the drone to maintain a stationary hover.
Identify the dependent variable in this scientific investigation.
689 exam-style questions on AQA A Level Psychology Scientific processes. Each one has a worked solution and a mark scheme showing where the marks go.