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Alex Soriano Air Group 3-20-09 Lab Report The Effect of the Mass of the Marble on the Diameter of the Crater Problem: What is the effect of the mass of the marble on the diameter of the crater? Hypothesis: If the mass of the marble is increased, then the diameter of the crater will be greater because it will hit the sand with more force causing a larger crater to be formed. Materials: 1. Container filled with sand. 2. 3 different sized marbles. 3. Meter stick. Procedure: 1. Gather Materials. 2. Place the meter stick on the surface of the sand. 3. Choose one marble and measure its mass then drop it from 20cm. 4. Measure the diameter of the crater left and record. 5. Repeat 2 other times with the same marble. 6. Repeat steps 2-5 with 2 other sized marbles. Analysis: I noticed that the more grams the marble weighed, the larger the diameter of the crater was. Conclusion: My conclusion was that the greater the mass of the marble, the larger the diameter was. For example, when the marble was 10g it left an average crater 4.83cm wide. When it weighed 9g, the diameter of the crater was 4cm on average and when it was 6g the crater was 3.3 cm wide on average. This proves my hypothesis correct when it stated that the larger the mass the larger the crater. One error we may have had was that we didn’t always drop it from exactly 20cm and the sand from the crater may have been stopped by the wall of the container preventing the crater to expand to its full length. And as always, we could have performed more trials for a more accurate outcome. A new question we could have is: Did the container size and sand level affect the size of the crater?