1. Assume that the storm data in Figure 1 are typical of thunderstorms that produce tornadoes. For such thunderstorms, which type of lightning stroke, -CG or +CG, is predominant before TF and which type of lightning stroke is predominant after TF?
2. According to Table 1, the average duration of the +CG strokes was at least 10 times greater than the average duration of -CG strokes for all the time periods EXCEPT:
3. Is the statement "The number of -CG strokes in the 5 min period just after TD will be less than the number of -CG strokes in the 5 min period just before TD" supported by Figure 1?
4. According to Figure 1, from 1:25 p.m. to 1:55 p.m., the number of +CG strokes in a 5 min period:
5. According to Table 1, from noon until 2:00 p.m., did the magnitude (absolute value) of the average current of the +CG strokes increase or decrease, and did the magnitude of the average current of the -CG strokes increase or decrease?
6. According to Table 1 and Figure 1, across the 4 age categories, as the age of the helpers increased, the percent contribution to pupfeeding:
7. When food is scarce, meerkats may lose weight, causing them to have a negative daily weight gain. Based on Figure 2, if the percent contribution to babysitting by female helpers older than 1 yr with a daily weight gain of -2 g/hr had been calculated, it would most likely have been:
8. Based on Table 1 and Figure 1, the greatest difference between the percent contribution by male helpers and the percent contribution by female helpers was observed for which pup care activity and which helper age range?
9. A student claimed that for male helpers and also for female helpers, the percent contribution to pupfeeding varies with daily weight gain. Are the results shown in Figure 2 consistent with this claim?
10. Based on Experiment 2, if a trial had been done in Experiment 3 at 30°C, the conductivity at 6,000 sec would most likely have been:
11. During each of the trials in Experiments 2 and 3, a white solid accumulated at the bottom of the test tube. What was this solid?
12. Suppose that at 40°C, 10 mL of a 100 mmol/L Nal-acetone solution is mixed with 10 mL of a 300 mmol/L Nal-acetone solution. Based on Experiment 1, the conductivity of the resulting solution will most likely be closest to which of the following?
13. In Study 2, at approximately what incident photon energy was P for the Compton effect in Pb at its maximum value?
14. In any given event, what scattered particle(s) was(were) registered by the detectors as evidence that the Compton effect, the photoelectric effect, and pair production, respectively, had occurred?
15. Pair production cannot occur unless the incident photon has sufficient energy. Based on the results of Studies 1 and 2, the minimum incident photon energy for pair production is closest to which of the following values?
16. Which of the following questions CANNOT be answered by an analysis of Figure 2?