1. According to Scientist 2, friction between the rocks and the clay is reduced by which of the following?
2. Suppose a researcher observed that wind speeds greater than 80 miles per hour are needed to move the rocks in the playa. This observation is consistent with which of the scientists’ explanations?
3. Suppose that no seismic activity was recorded in the playa where the trails left by the rocks are found. This finding would weaken which of the scientists’ explanations?
4. Suppose it were discovered that a particular rock formed a 200 m long trail in 72hr. Would this discovery support Scientist 1’s explanation?
5. Suppose that during one year there was no measurable movement of any rocks in the playa during the spring. Scientists 1 and 2 would most likely both agree that this was due to the absence of which of the following factors?
6. Suppose that air temperature in the playa varies between 4°C and 47°C. Would this information support the explanation of Scientist 2?
7. For the range of temperatures and the range of relative humidities shown in Figures 1 and 2, respectively, is α for a 200 Hz sound wave more strongly affected by changes in temperature or by changes in relative humidity?
8. If another trial had been performed in Experiment 2 and 450mL of liquid had been measured in the cylinder, the temperature of the diet cola in this trial would most likely have been:
9. Suppose Trial 6 had been repeated, but the bottle of diet cola had been opened and then left undisturbed at 25°C for 12hours before it was attached to the apparatus. Would the mass of CO2 produced in this trial likely be greater than 0.969 g or less than 0.969 g?
10. One millimole (mmol) of CO2 has a mass of 0.044 g. How many trials resulted in the production of at least 1mmol of CO2?
11. According to Figure 1, which of Tube A and Tube B, if either, had at least one end submerged in a liquid before the clamp was removed?
12. Is the relationship between the volume of liquid in the cylinder at the end of the experiment and the mass of CO2 produced a direct relationship or an inverse relationship?
13. The experimental designs of Studies 2 and 3 were identical with respect to which of the factors listed below, if either?
14. According to Figure 1, as the nickel concentration in the nutrient solutions increased, the average iron content of Species M plants:
15. According to Table 1, the Species U plants that were fed the solution that had a pH of 6 and a nickel concentration of 10μM had an average dry mass of:
16. According to Table 1, Species M plants that were fed a nutrient solution with which of the following combinations of pH and nickel concentration had the greatest average dry mass?
17. According to Table 1 and Figure 1, the Species M plants that were fed Solution 3 had an average zinc content of:
18. Consider the results of Experiment 1 for 375°C. All H2 and N2 were consumed in less than 20 cycles when which catalysts were used?