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Crater Size Lab

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What Factors Affect A Crater’s Size My partners and I made two hypotheses. Our first hypothesis was that if we dropped the same marble at different heights, then the size of the crater would change because of the different gravitational pull. Our second hypothesis was that if we changed the mass of the marble we dropped, then the crater size would change because of the different mass combined with the gravitational pull. With our first hypothesis, we conducted an experiment where we dropped the same glass marble into a tray of sand at different heights of 20 cm, 40 cm, and 60 cm. The average width for each height were 2.8 cm, 3.5 cm, and 4 cm. The average depth for each were .7 cm, 1.5 cm, and 2 cm. Therefore, our hypothesis is correct because …show more content…

Using our qualitative observations, we saw that as the height the marble was dropped from increased, the sand and orange powder in the tray reacted more, meaning that it was being hit with more force. By “reacted”, we mean that when the marble hit the sand, some of the sand around the marble sprang up in the air. With our second hypothesis, we dropped 3 different sizes of glass marbles each from a height of 40 cm. From smallest to largest, the average widths were 2.8 cm, 3 cm, and 3.7 cm. and the average depths were 1 cm, 1 cm, and 1.2 cm. Thus, our hypothesis was partially correct because for the most part the craters did change size. Although the average depth for two out of the three marble sizes was the same, the largest marble still changed the crater size slightly. As far as the widths of the craters, each time we changed the marble size, the width of the crater changed also. Going along with our data, in our qualitative observations we noticed that the largest marble created the widest craters and the smallest marble created the narrowest craters. Overall, this experiment did go as we expected but we did have to make one minor change. At first, we were going to try from 4 different

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