Three groups of physical science students designed an experiment to see what factors changed the swing time (or period) of a pendulum. The groups constructed their pendulums and ran trials. To determine the period of the swing, the groups divided the time recorded in seconds by 10. They repeated this procedure each time they manipulated the variable for their group. At the end of the class period the groups shared their data. Group data is recorded in the tables.
How do the three experiments compare? Click on all the statements that are true about the comparisons.
Responses
A All three groups had the same dependent variable.All three groups had the same dependent variable.
B All three groups had the same independent variable.All three groups had the same independent variable.
C Group #3's results .showed a consistent trend: the shorter the string length, the shorter the period.Group #3's results .showed a consistent trend: the shorter the string length, the shorter the period.
D Group #1 showed no significant change in period as they changed the weight of the bob.Group #1 showed no significant change in period as they changed the weight of the bob.
E According to Group #2's data, the time of the period varied directly with the height of the drop.
C Group #3's results showed a consistent trend: the shorter the string length, the shorter the period.
D Group #1 showed no significant change in period as they changed the weight of the bob.