archimedes

An object submerged in a fluid is acted upon by a buoyant force, making that object rise or move _______.

If a body will be put in water, it will weigh______

• more than weight in air

• same as weight in air

• less than weight in air

• 
  may be more or less depending on impurities in water

Loss in weight is equal to _________

• weight of liquid

• weight of the liquid displaced by the immersed part of the body

• weight of the body

• density of liquid

When an object is put in a container filled with fluid, ________

• the volume of the displaced fluid is equal to the weight of the object

• the volume of the displaced fluid is equivalent to the volume of the object immersed in the fluid

• the weight of the displaced fluid is equal to the weight of the object

• the weight of the displaced fluid is equal to the buoyant force of the object

Under what condition will an object remain suspended in a fluid?

• weight of the object larger than the buoyant force

• weight of the object smaller than the buoyant force

• weight of the object equivalent to the buoyant force

Why the pebble always sink in the water?

• weight of the pebble larger than the buoyant force

• weight of the pebble smaller than the buoyant force

• weight of the pebble equivalent to the buoyant force

The ship floats because its average density is less than the density of water. What happens if the ship is loaded with cargo?

• The ship will float the same way regardless of the cargo's weight

• The ship will sink immediately

• The ship will sink deeper

• The ship will float higher if heavier cargo is added

How can the concept of buoyancy be applied in designing ships and submarines?

• 
  Buoyancy has no impact on ship or submarine design.

• By utilizing the principle of buoyancy, engineers can design ships and submarines with the right buoyant force to keep them afloat and control their depth in water.

• By using the concept of buoyancy, ships and submarines can fly in the air.

• Applying buoyancy principles makes ships and submarines heavier.

The reason a life jacket helps you float is that _________.

• 
  the jacket repels water

• 
  the jacket makes you weigh less

• the jacket has the same density as an average human

• 
  you and the jacket together have average density less than liquid.