Question: Does the length of the string effect the number of swings that the pendulum can make in 10 seconds? Observation: We used a washer, a ruler, scissors and tape. Hypothesis: When the string is longer it will swing slower (fewer swings). Test: We swung a pendulum and we started the swing at 90 degrees. We counted how many swings it would do in ten seconds. We tested it 3 times, at 3 lengths. Collect data: At 20.75 inches - 1: 7, 2: 6.5, 3: 6.5 10 inches - 1:9, 2:9, 3:10 4.5 inches - 1: 15, 2: 17, 3: 14 Results: Averages: 20.75 is 6.666666667 10 is 9.33333333 14. is 15.33333333 My hypothesis was right. The string is slower when it is longer.
How many drops of water can a penny hold? 1. Observation: I used a eye dropper, a penny and water. The penny was on tails and was dirty. 2. Hypothesis: My guess is that it was going to hold 13 drops. 3.Test: I dropped water on the penny. I ran the test five times and I looked for the average. 4.Collect data: test 1: 21 test 2: 21 test 3: 21 test 4: 17 test 5: 16 5.Share results: The average was 19.2. |
AuthorZachary, a random homeschooler that is awesome in every way, likes riding his bike, playing hockey and more. Archives
May 2015
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