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ASMO Science Olympiad 2017 — Level 3 (Years 7, 8 & 9) Question 1

ASMO Science · ASMO Science Olympiad 2017 — Level 3 (Years 7, 8 & 9)

Question 1

Paul wanted to investigate the movement of the Sun over over the course of a day. He used a sundial to measure the length of a shadow once every hour from sunrise to sunset.

Which of the following variables must be kept the same in order to obtain reliable data from this activity?

Question illustration
  1. Type of sundial and location of sundial
  2. Length of shadow and location of sundial
  3. Type of sundial and the times at which measurements are taken
  4. Length of shadow and the times at which measurements are taken