Buoyancy

What is the buoyant force?

• An upward force exerted by fluids on an object.
• An downward force exerted by fluids on an object.

A block of metal is thrown into a lake.

What happens to the buoyant force as it sinks deeper into the water?

• Increases

• Decreases

• Stay the same

• increase and then decrease

This is what happens to an object when the gravitational force is stronger than the buoyant force.

​ (a)  

• It will float
• It will sink

This is what happens to an object when the buoyant force is stronger than the gravitational force.

​ (a)  

• It sinks
• It floats

The amount of matter in an object is ____.

• mass

• volume

• density

• buoyancy

Tags

NGSS.MS-PS1-5

How much space an object take up is its _______________.

• volume

• mass

• density

• buoyancy

The amount of mass in a given volume is _________.

• Mass

• Volume

• Density

• Buoyancy

If an object that weighs 100 pounds is thrown in water and displaces 80 pounds of water, what will it do? ​ (a)  

• It will float
• It will sink

The upward force exerted by a fluid is called the...

• buoyant force

• density force

• fluidity force

• normal force

How do you get a chunk of dense metal to float instead of sink

• Nothing, you cannot change the shape

• add a less dense metal to the original metal

• Increase the volume of the metal by flattening its shape

• compress the metal