Three students designed an experiment using various sized aluminum beads. The beads were placed in a cylinder, as shown below in Figure 1.
The aluminum beads used in the experiment varied in diameter. Density remained constant, as shown in Figure 2.
During the experiment, the students filled the cylinder shown in Figure 1 with water, and dropped the beads at random from point A in the cylinder. The beads were then allowed to drop freely through the water. The time it took for each bead to reach point B was recorded. The averages are shown in Table 1.
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Question 1 of 5
1. Question
Question 1:
Based on Table 1, which of the following correctly lists the various sized aluminum beads in order of decreasing settling time?
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Question 2 of 5
2. Question
Question 2:
Which of the following is the best explanation for the constant density shown in Figure 2.
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Question 3 of 5
3. Question
Question 3:
One of the students had proposed using plastic beads with a density of .8g/cm3. Would the experimental results have been consistent with those presented?
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Question 4 of 5
4. Question
Question 4:
Suppose a fourth aluminum bead with a diameter of 8mm and a density of 2.7g/cm3 had been used in the experiment. One would expect the settling time recorded to have been which of the following?
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Question 5 of 5
5. Question
Question 5:
The students considered running the experiment again, but using a stopwatch that was accurate to the nearest second. Should the student make this change?
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