# Why Do Some Objects Float While Others Sink

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Background research What is density? Density is how much mass (g) an object has in ratio to the amount of volume(unit cubed) said object has. All objects have density, but some object are more dense than others if the atoms that make up the object are packed together are more tightly packed together than the atoms in another object. Why do some objects float while others sink? Objects that float have a density of less than 1g/ml. Objects that have a density of more than 1g/ml will not float and thus sink in water. If an object, however has a density of exactly 1g/ml than the object would suspend or float freely in water. Boats are really heavy, why do they float? Boats float on account of buoyancy. Buoyancy, which is commonly referred to as upthrust, is the upward force exerted by water counters the weight of the…show more content…
I also think that the ball of paper would float at first but sink after it absorbs the water. I also predict that the penny will sink. I predict that the clothes pin will either sink or suspend in water. Hypothesis 2: : If I place a raisin, a cork, a paperclip, a penny, a clothes pin,and a ball of paper in vegetable oil, then I think that the raisin and cork will float. I also think that ball of paper will float at first but later sink when it absorbs the water. I also am predicting that the penny, clothes pin, and clothes pin will sink in vegetable oil. Hypothesis 3: : If I place a raisin, a cork, a paperclip, a penny, a clothes pin, and a ball of paper in corn syrup, then I think that the raisin, cork, and paperclip will float. I feel that the penny will either sink again or suspend in the corn syrup. I think that the ball of paper will once again float at first then sink as it absorbs the corn syrup. I also think that the clothes pin will either sink or