Loading test…

ACT Science Unit 1: Interpretation of Data

12 questions

Header banner

Unit 1: Interpretation of Data

0 of 12 answered

~7 min left

Question 1

Among Experiments 1, 2, and 3, which best demonstrates a relationship that levels off as the independent variable increases?

A.Experiment 1 onlyB.Experiment 2 onlyC.Experiment 3 onlyD.All three experiments

Question 2

Experiment 2. A physics class hung known masses from a vertical spring and measured the resulting extension. The setup was kept in a temperature-controlled room.

Mass (g)	Extension (cm)
100	2.0
200	4.0
300	6.0
400	8.0
500	10.0

According to the data in Experiment 2, what is the extension when a $250 g$ mass is hung?

3.0

cmB.

5.0

cmC.

6.0

cmD.

8.0

Question 3

Based on Experiment 2, what extension would the spring most likely show for a $750 g$ mass, assuming the same relationship holds?

7.5

cmB.

10.0

cmC.

15.0

cmD.

20.0

Question 4

Based on the data in Experiment 1, what additional conclusion is best supported by comparing trials 4 and 5?

A.The enzyme works equally well at all temperatures.B.The reaction rate continues to increase past

40° C

.C.An optimal temperature for the enzyme lies between

30° C

and

50° C

.D.The enzyme is more active at

50° C

than at

40° C

Question 5

Experiment 3. An ecology team measured water salinity at five distances from where a river enters a coastal bay. Wind and tide were calm during the readings.

Distance from river mouth (km)	Salinity (parts per thousand, ppt)
0	0.5
5	5.2
10	12.8
15	22.4
20	30.1
25	34.5

According to the data in Experiment 3, salinity increases by the greatest amount over which $5 -km$ interval?

0

5

kmB.

5

10

kmC.

10

15

kmD.

20

25

In-content ad

Question 6

Based on the data in Experiment 1, what best describes the relationship between temperature and reaction rate from $10° C$ to $40° C$ ?

A.As temperature increases, rate decreases.B.As temperature increases, rate increases.C.Rate is independent of temperature.D.Rate first decreases, then increases.

Question 7

Compare the results of Experiment 1 (enzyme rate vs. temperature) and Experiment 2 (extension vs. mass). Which statement best characterizes the difference?

A.Both experiments show a strictly linear increase in the dependent variable.B.Experiment 2 shows a linear relationship; Experiment 1 shows a non-monotonic relationship.C.Both experiments show a non-monotonic relationship.D.Experiment 1 is linear; Experiment 2 is non-monotonic.

Question 8

Across the three experiments, the relationship between the independent and dependent variables is:

A.linear in all three.B.non-monotonic in Experiment 1, linear in Experiment 2, asymptotic in Experiment 3.C.asymptotic in all three.D.linear in Experiments 1 and 3, non-monotonic in Experiment 2.

Question 9

Based on Experiment 3, if the team had measured salinity at $30$ km, the value would most likely be:

A.less than

30

pptB.between

34.5

and

36

pptC.between

40

and

50

pptD.greater than

50

ppt

Question 10

Based on the data in Experiment 1, if the student had run an additional trial at $35° C$ , the reaction rate would most likely have been:

A.less than

5.1

μmol/minB.between

5.1

and

8.2

μmol/minC.exactly

5.1

μmol/minD.greater than

8.2

μmol/min

In-content ad

Question 11

Based on Experiment 3, what is the most likely salinity at $12$ km from the river mouth?

10

pptB.

17

pptC.

24

pptD.

32

ppt

Question 12

Experiment 1. A biology student measured the reaction rate of an enzyme at six different temperatures while keeping pH and substrate concentration constant. The data are shown below.

Trial	Temperature (°C)	Reaction rate (μmol/min)
1	10	1.2
2	20	2.8
3	30	5.1
4	40	8.2
5	50	6.5
6	60	2.3

According to the data, at what temperature was the reaction rate highest?

20° C

30° C

40° C

60° C

ACT Science Unit 1: Interpretation of Data — Free with Answer Explanations | Test Practice Hub