Buoyant Force

Archimedes' principle addresses

• drag force

• buoyant force

• gravitational force

Buoyant force is equal to

• upward pressure/downward pressure

• upward pressure + downward pressure

• upward pressure - downward pressure

What happens to the buoyant force when a diver goes deeper?

• increases

• decreases

• no change

Buoyant force acts

• upward

• downward

• horizontally

• from all sides

The scientific description of buoyant force is known as

• Pascal's Principle

• buoyancy principle

• Bernoulli's principle

• Archimedes' principle

To float in water, an object must

• be less dense than water

• be more dense than water

• have less surface area than water

• have more surface area than water

The density of water i s 1g/cm cubed. Which of these will float in water?

• a ball with a density of 1.7g/cm cubed

• a ruler with a density of 1.1 g/cm cubed

• a cup that weighs 2N and displaces 3N of water when submerged

• a toy that weights 4N and displaces 3N of water submerged

Joseph weighs 290N and displaces 300N of water as he swims under water in a pool. What is the buoyant force on Joseph?

• 10 N upward

• 300 N upward

• 290 N downward

• 590 N downward

Which statement about boats is correct.

• A boat cannnot be made from metal because metal has a greater density than water

• A boat floats only if its overall density is less than that of water

• A boat floats only if its overall mass per volume is more than water's mass per volume

• A boat floats only if the weight of water it displaces is less than the boat's weight

An object with a very low buoyant force acting on it will _____. 

• Sink
• Float
• Expand
• Shrink