ACT · Science · Science

Scientific Investigation

46 questions from the official practice tests. Page 2 of 2.

Question Science · 27

Practice test 3Multiple choice

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Question Science · 27 — 27. Were the experiments performed with the gas that is most abundant in air? A. Yes; nitrogen was tested in the experiments and makes up the greatest percentage of air. B. Yes; water vapor was tested in the experiments…

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Question Science · 31

Practice test 3Multiple choice

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Question Science · 31 — 31. Based on the results of Study 1, in which of the following trials, if any, did the student use 2 resistors having the same resistance? A. Trials 1, 2, 3, and 4 only B. Trials 1, 8, 9, and 10 only C. Trials 8, 9, and…

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Question Science · 32

Practice test 3Multiple choice

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Question Science · 32 — 32. Based on the results of Study 1, in how many trials was the internal resistance of the voltmeter less than the resistance of R2? F. 0 G. 3 H. 4 J. 10

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Question Science · 33

Practice test 3Multiple choice

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Question Science · 33 — 33. Suppose another circuit had been tested in Study 1 and the voltage across R2 had been 4.354 V. If the resistances of R1 and R2 were each 1 kΩ, the resistance of RV in this circuit would most likely have been: A.…

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Question Science · 35

Practice test 3Multiple choice

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Question Science · 35 — 35. Based on Figure 1, the most likely purpose of the thermometer was to measure the temperature of the: A. liquid in the CF. B. liquid in the DF. C. vapor in the condenser. D. vapor in the DH.

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Question Science · 9

Practice test 4Multiple choice

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Question Science · 9 — 9. When a vacuum pump was operating during Step 2, it drew air through the solution in the test tube. Assuming that the pump drew air at a rate of 200 mL/min, how many milliliters of air were drawn through the solution…

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Question Science · 11

Practice test 4Multiple choice

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Question Science · 11 — 11. Suppose that the actual O3 concentration at 12:30 p.m. at Site C was 43 ppb. Based on Figures 1 and 3, which of the following expressions would give the percent error for the value of the O3 concentration that was…

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Question Science · 17

Practice test 4Multiple choice

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Question Science · 17 — 17. Suppose the group at Location 1 had recorded the time they observed Venus in the first contact position. This time, in UTC, would most likely have been: A. before 05:34:05. B. between 05:34:05 and 05:37:37. C.…

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Question Science · 22

Practice test 4Multiple choice

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Question Science · 22 — 22. Suppose that students at an additional location were able to record one, but not both, of the second and third contact times because sunset occurred at their location during the transit. Which of those contact…

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Question Science · 23

Practice test 4Multiple choice

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Question Science · 23 — 23. Which of the following statements describes a difference between Study 2 and Study 3? In Study 2: A. values of θ from 0.6° through 4.2° were tested, whereas in Study 3, values of θ from 10.4° through 40.1° were…

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Question Science · 26

Practice test 4Multiple choice

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Question Science · 26 — 26. Suppose that during Study 1, the platform had been set to an angle of 7.3°. A bubble with a terminal velocity of 30 mm/s would most likely have had a radius: F. less than 0.22 mm. G. between 0.22 mm and 0.40 mm. H.…

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Question Science · 27

Practice test 4Multiple choice

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Question Science · 27 — 27. What was the dependent variable in Study 1? A. Bubble radius B. Platform angle C. Liquid composition D. Terminal velocity

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Question Science · 35

Practice test 4Multiple choice

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Question Science · 35 — 35. Based on the description of Table 1, average t represents the average time between: A. each jump made by G. gibberulus. B. each jump made by C. marmoreus. C. when observations began and the first G. gibberulus jump.…

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Question Science · 36

Practice test 4Multiple choice

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Question Science · 36 — 36. Which of the following was the most likely reason a barrier was placed in the tank? F. To prevent the successful catch of prey G. To prevent the snails from escaping the tank H. To prevent the snails from seeing…

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Question Science · 37

Practice test 4Multiple choice

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Question Science · 37 — 37. In Step 2 of the study, was each Group 4 snail placed facing toward the barrier or away from the barrier, and was that snail a predator or a prey to the Group 2 snail? A. Toward the barrier; predator B. Toward the…

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Question Science · 38

Practice test 4Multiple choice

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Question Science · 38 — 38. Suppose the study had been repeated and the average t for one of the groups had been 2 min. Based on the results shown in Table 1, would the CO2 concentration of seawater for that group more likely have been an…

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