Question

part 1: unit 1 science inquiry test corrections directions: base your answers to the questions on the information below and your knowledge of biology. the data shows the number of fish species found at various ocean depths. using the information in the data table, construct a line graph on the grid, following the directions below. 1. label the x - axis, including units. wrong answer: x the labels come directly from the data table provided. what is wrong with this answer? what is a more correct answer? 2. mark an appropriate scale, without any breaks, on each axis. wrong answer (x - axis): 50, 75, 100, 150, 200 a scale should use skip counting (like by 1s, 2s, 5s, or 10s) and the numbers should go up evenly, without skipping any sections. what is wrong with this answer? what is a more correct answer? 3. state the general relationship between water depth and the number of fish species found. wrong answer: as the water depth decreases, the number of fish species decreases. to find the relationship, look at the pattern in the graph or table and observe how the numbers change as one variable increases or decreases. sentence frame: as the (x - axis label) increases, the (y - axis label) ______________. what is the correct answer? 4. in an investigation to determine a factor that affects the growth of rats, a student exposed 100 rats of the same age and species to identical conditions, except for amount of living space and amount of food each rat received. each day the student measured and recorded the weight of each rat. state one major error the student made in performing this investigation. wrong answer: the amount of living space and the amount of food. an experiment should only change one variable at a time and keep all other conditions the same. how can this be made more correct? fish species found at various ocean depths water depth (m) number of fish species found 50 35 75 31 100 22 150 13 200 6

Explanation:

1. The wrong answer "X" for labeling the x - axis is incorrect because it is not descriptive. The x - axis should be labeled "Water Depth (m)" as per the data table.
2. The wrong scale "50, 75, 100, 150, 200" is not evenly spaced using skip - counting. A correct scale for the x - axis could be 0, 50, 100, 150, 200 (using skip - counting by 50). For the y - axis, since the number of fish species ranges from 6 - 35, a scale like 0, 5, 10, 15, 20, 25, 30, 35 could be used.
3. The wrong answer has the relationship reversed. As the water depth (x - axis label) increases, the number of fish species found (y - axis label) decreases.
4. The major error in the rat experiment is that the weight of the rats at the start of the experiment was not recorded. To correct it, the initial weight of each rat should be measured and recorded before starting the experiment while keeping all other non - tested variables (like amount of living space and food) constant.

Answer:

1. Correct answer: Water Depth (m)
2. Correct answer (x - axis): 0, 50, 100, 150, 200; (y - axis example): 0, 5, 10, 15, 20, 25, 30, 35
3. Correct answer: As the water depth increases, the number of fish species found decreases.
4. Correct answer: The initial weight of each rat was not measured. To correct, measure and record initial weights while keeping other non - tested variables constant.