1. Which best describes the meaning of probability? a) Estimating the outcomes of repeated events b) Measuring the outcomes of repeated events c) Predicting the outcome of an event d) Repeating the outcomes of estimated events 2. Probability of detection in quantum mechanics is represented by wave a) Speed squared b) Height squared c) Frequency squared d) Wavelength squared 3. If one detects which slit a photon goes through during the double-slit experiment, on the observation screen behind the slits a) The interference pattern stays the same b) The interference pattern gets darker c) There is no interference pattern d) The interference pattern gets brighter 4. Which best describes why position and speed cannot both simultaneously be known with arbitrary precision? a) There is always experimental error b) Because simultaneity is relative c) It is difficult to measure very small things d) The measurement of one affects the other