Why Boats Float

What is the main reason a ship can float?
Density
Displacement
Volume
Area
How much water does an object have to displace for it to float?
More than the weight of the object
Less than the weight of the object
The same as the weight of the object
None, it just floats
How much water are ships designed to displace?
All of the water!
None
A little
A lot
Ships need to be as full/packed as possible to float.
True
False
What are all of the reasons that objects can float?
Density
Weight
Displacement
Shape
Whether it is hollow or not
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