ACT science practice test 64

Directions: Each passage is followed by several questions. After reading a passage, choose the best answer to each question and fill in the corresponding oval on your answer document. You may refer to the passages as often as necessary.

You are NOT permitted to use a calculator on this test.


Many companies advertise that their brand of battery outlasts the competitors' batteries. A series of experiments were conducted to compare batteries from different manufacturers. Figure 12.3 shows the results of tests of four different brands of batteries. Two AA batteries were tested in an incandescent bulb flashlight, and the combined voltage was tested for continuous use over time. The flashlight operated effectively for voltage values greater than 2.2 V.

Figure 12.3

Table 12.2 compares how Brands D and E alkaline batteries performed in different devices. The table displays the time the combined voltage of two batteries remained above 2.2 V. The voltages were checked every quarter-hour.

TABLE 12.2

1. According to Figure 12.3, how did the performance of Brands D and E alkaline batteries compare?

A. Brand E performed significantly better than Brand D.
B. Brand D performed significantly better than Brand E.
C. There was no significant difference between the performance of the brands.
D. Neither Brand D nor Brand E was capable of lighting the flashlight for more than an hour.

2. According to Figure 12.3, the Brand P battery was capable of operating the incandescent flashlight for approximately:

A. 0.5 hours.
B. 2.0 hours.
C. 3.5 hours.
D. 6.5 hours.

3. Which of the following conclusions is plausible from the information provided in Figure 12.3?

A. Heavy-duty batteries perform better than alkaline batteries when used in medium-drain devices such as incandescent bulb flashlights.
B. In the experiment, there was more consistency in the performance of alkaline batteries than in that of heavy-duty batteries.
C. Alkaline batteries perform better than heavy-duty batteries in high-drain devices such as camera flashes.
D. The Brand P heavy-duty battery is the best value for the money spent.

4. What can one conclude about the performance of Brands D and E batteries when they were used in the remote-control car?

A. Brand E performed significantly better than Brand D.
B. Brand D performed significantly better than Brand E.
C. The two brand's performances were approximately the same.
D. The variability of the data prevents any valid comparison.

5. When used in the incandescent bulb flashlight, how much time did Brand K's heavy-duty battery sustain a voltage between 2 and 3 V?

A. 0.5 hours
B. 2.0 hours
C. 3.0 hours
D. 6.5 hours

6. Using the data in Table 12.2, how do the averages of the three trials compare when Brands D and E are used in the plug-and-play video game?

A. Brand D's average was 0.75 hours more than Brand E's.
B. Brand E's average was 0.5 hours more than Brand D's.
C. Brand E's average was 1.5 hours more than Brand D's.
D. Brands E and D had the same average.

7. Which of the following statements is true according to Figure 12.3?

A. In the first few hours of testing, the voltage drop for Brand D was greater than that for Brand K.
B. Brand P's performance over the first four hours was nearly identical to that of Brand E.
C. At voltages under 2.2 V, the voltage of Brand E drops more rapidly than that of Brand P.
D. Brand K lasts longer than Brand P.

8. Which of the following steps in the experimental procedure is MOST IMPORTANT in the comparison of battery performance between brands?

A. The batteries tested were manufactured in the same year.
B. The batteries tested were not previously used in any other device.
C. The temperature was controlled in the testing room.
D. The time intervals for measuring voltages were the same for each brand.

9. Which of the following devices is most likely classified as a low-drain device?

A. Incandescent bulb flashlight
B. LED bulb flashlight
C. Remote-control toy car
D. Plug-and-play video game

10. Approximately how much longer than the incandescent bulb flashlight does the LED bulb flashlight last?

A. Twice as long
B. Four times as long
C. Six times as long
D. Twenty-four times as long

11. In terms of just the Brand E tests, which of the following devices is most likely classified as a high-drain device?

A. Incandescent bulb flashlight
B. LED bulb flashlight
C. Remote-control toy car
D. Plug-and-play video game