Scientific Method/Pendulum Exercise Worksheet
1. What is the difference between an observation and an inference?
Observations are based on collecting knowledge through our senses. An inference is making an educated guess based on observation.
2. In doing science, why are hypotheses either supported or not supported, but never proved beyond all doubt?
There are many other factors that could be unknown and new data could be found in the future to support or not support a hypothesis.
3. For this pendulum exercise, state your hypotheses (there should be 2).
1. If the weight on the string is 4oz, then the string will produce more swings.
2. If the string is 18 inches long, then there will be fewer swings.
4. Methods. What methods did you use to test your hypotheses? Write out the steps you took in your experiment. Use full sentences, including as much detail as possible, and write in paragraph form – no bullet points. …show more content…
Next, we decided on a set time to run each trial, which was 57 seconds, and used a timer to keep track. For each different trial we taped the string to the desk and had the same person drop the weight from the same height. Once the weight was dropped, two people counted the amount of swings that resulted. A full swing was defined as when the weight reaches the same side it was dropped from. Each trial was repeated using the previous mentioned steps, but the weight and string length was changed per trial as