3. Density is the mass of a
substance per unit volume
(usually measured in grams
per milliliters, g/ml).
Buoyancy is the upward force
that a fluid exerts on an
object less dense than itself.
5. A: A greater force is pushing up on
the ship than the weight force
pushing down.
This supportive force is called buoyant force.
6. If the buoyant force is equal to the
object’s weight, it will float.
7. If the buoyant force is less than the
object’s weight, it will sink.
8. Bouyant force was explained
by Archimedes and it
became known as
Archimedes’ Principle.
Archimedes was a Greek
mathematician who lived
around the 3rd century
B.C.