PHYSICS FORM 4

ONLINE TEST SERIES

FLOATING AND SINKING

1.         The buoyant force on an object is dependent on……………..

2.         The buoyant force on an object submerged in a fluid depends on ……………………………

3.         The property that most determines whether or not an object will float in oil is the object's……………………………

4.         An object is placed in a fluid.  The buoyant force on the object is proportional to………………

5. A wooden boat with a density of 0.48 g/cm3 is floating in a vat of oil whose density is 0.80 g/ cm3.What percentage of the boat is floating above the surface of the oil?

6. Oil has a smaller density than water.  Therefore, an object that will float in oil will …………………………………

7. A 20 kg solid block of Aluminum (rAl = 2.70 g/cc) is placed in a beaker of water filled to the brim.  Some water overflows.  The same is done in another beaker with a 20 kg solid block of lead (rlead = 11.3 g/cc)  Does the block of lead displace more, less, or the same amount of water as the aluminum block?

8. If an object floats, the volume of water is displaces is equal to or greater than the volume of…………………

9.A ship stays afloat as long as the buoyant force is…………………

10. A log that is just below the surface of the water (not sinking or floating) has …………………………….

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