1. Investigation: Pendulums
Data/Results:
Control 1. 2. 3. 4.
_____________
____
____
____
____

2. Investigation: Pendulums
Problem:
Can we change the number of pendulum cycles in 15 seconds?
Variables: 1.
Mass (number of washers) 2.
Angle of release 3.
Length of string
Prediction:
I think that changing the ______ will (increase/decrease) the
number of cycles.
This will happen because ______.

3. Data/Results: Conclusion: Mass Angle Of Release Length Of String ____
Control 1. 2. 3. 4.
Ave.
_____________
____
____
____
____
Conclusion:
Changing the _____ & _____ caused (little/no) change to the number of cycles.
The average stayed close to ___ cycles/15 seconds.
Changing the _____ caused the number of cycles to change significantly.
On a short string, the average (increased/decreased) from ___ to ___ cycles per 15 seconds.
When Science works like it’s supposed to...
Everything is REPEATED multiple times
Your conclusion is based on your EVIDENCE

4. Why is it a bad idea to change 2 variables at once?
Homework-
Why is it a bad idea to change 2 variables at once?
WHY does the pendulum eventually come to a stop?