Read the Table
Which plant grew the least?
Plant A
What was the temperature at 4 minutes?
51 C
Which fertilizer produced the greatest growth in both groups?
Fertilizer B.
Which ramp height produced the greatest travel distance?
50 cm
Which student recorded a measurement of 62 g?
Student B
How much more did Plant D grow than Plant B?
7cm
During which two-minute interval did the temperature increase the most?
From 4 to 6 minutes
Which treatments had the smallest difference between Group 1 and Group 2?
No fertilizer, Fertilizer A, and Fertilizer B. Each had a difference of 1 cm.
Approximately how much farther did the car travel from the 40-cm ramp than from the 20-cm ramp?
80 cm
Which measurement appears to be an outlier?
62 g.
What variable was kept constant in this experiment?
The amount of water
How much did the temperature increase during the entire experiment?
62 C
What is the average growth for the two plants receiving Fertilizer B?
15.5 cm.
Describe the overall relationship between ramp height and distance traveled.
As ramp height increased, the distance traveled increased.
Which student’s measurements are the most consistent?
Student C
What relationship does the table suggest between sunlight and plant growth?
As the amount of sunlight increased, plant growth also increased.
What happened to the temperature from 8 to 10 minutes?
It stayed at 82 C
A student claims, “All fertilizers caused plants to grow at least twice as much as plants without fertilizer.” Does the data support this claim?
No. Fertilizer C did not produce twice as much growth as the plants receiving no fertilizer.
Which is the independent variable: ramp height or distance traveled?
Ramp height.
What is the most reasonable estimate of the object’s actual mass?
Approximately 50 g.
Why can’t we conclude from this experiment that any additional amount of sunlight will always increase plant growth?
The experiment only tested sunlight amounts between 2 and 8 hours per day.
If the trend from 8 to 10 minutes continued, predict the temperature at 12 minutes.
Approximately 82 C
Which conclusion is better supported by the data?
A. Fertilizer always increases plant growth.
B. Some fertilizers produced more growth than no fertilizer in this experiment.
B. Some fertilizers produced more growth than no fertilizer in this experiment.
A student predicts that a 60-cm ramp would make the car travel approximately 240 cm. Is this prediction reasonable based on the data? Explain.
Yes. The car generally traveled about 40 cm farther for each 10-cm increase in ramp height, so 240 cm is a reasonable prediction.
Student B argues that the 62-g measurement proves that the object’s mass changed during the experiment. What is a more scientifically reasonable explanation?
The 62-g measurement was most likely caused by measurement or experimental error.