Buoyancy Challenge Questions

Buoyancy Challenge Questions – These questions are meant to test and exceed the knowledge that the kids gained during the Buoyancy Lab. These questions will be challenging for the older students and you should not feel discouraged if you do not get the answers or understand what is going on.

1)    The density of a rock is 12 g/mL (grams per milliliter) and the density of a glass of brine (salt with water in it) is 20 g/mL (grams per milliliter). What will happen to the rock when put in the brine?
    a.    It will sink
    b.    It will submerge in the water but will not sink
    c.    It will float at the top of the water
    d.    I do not know

2)    Can you change how buoyant an object is in a certain fluid without changing the fluid at all?
    a.    Yes
    b.    No
    c.    Maybe
    d.    I do not know

3)    Can an object have different buoyancies (positive, neutral, and negative) in different liquids?
    a.    Yes
    b.    No
    c.    Maybe
    d.    I do not know

4)    Can changing the surface area of an object make it buoyant in a fluid even though its density might be much greater than the density of that fluid?
    a.    Yes
    b.    No
    c.    Maybe
    d.    I do not know

5)    Can the buoyancy of an object be different when in a different area of fluid in the same container?
    a.    Yes
    b.    No
    c.    Maybe
    d.    I do not know