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Page 28 1. C 2. D 3. B 12. to solve a problem or to better understand an observed event 14. Form a new hypothesis 23. Heavier objects fall to the ground faster than lighter objects (Your answers may vary from mine) 24. I would choose objects of different masses (same shape) to be dropped from the same height. The independent (manipulated) variable would be the masses of the object. THe dependent (responding) variable would be the speed at which they fell.

Page 31 1. E 5. B