Floating and Sinking

What is the relationship between buoyant force and weight?

• If buoyant force equals weight, the object will neither sink nor float.

• Buoyant force is always greater than weight, causing the object to float.

• Weight is independent of buoyant force, affecting only the object's mass.

• Buoyant force is the force that causes an object to sink.

What is density?

• Density is the mass of an object divided by its volume.

• Density is the weight of an object divided by its height.

• Density is the volume of an object divided by its mass.

• Density is the mass of an object multiplied by its volume.

Buoyant force acts in the ________________ of gravity, making things feel lighter

• same direction

• opposite direction

• perpendicular direction

• random direction

What is an example of positive buoyancy?

• A beach ball floating on water.

• A rock sinking in a pond.

• A submarine diving underwater.

• A piece of wood sinking in a river.

How does temperature affect the density of water?

• As water cools, it becomes less dense and may float on warmer water.

• As water warms, it becomes less dense and may float on cooler water.

• Temperature has no effect on the density of water.

• As water warms, it becomes denser and sinks in cooler water.

Neutral buoyancy (weight and buoyancy are equal) is observed when an object...

• sinks to the bottom

• floats on the surface

• does neither (stays suspended in the middle)

• rises to the top

What happens to an object with a density less than water?

• It will sink.

• It will float.

• It will dissolve in water.

• It will break apart.

What is an example of neutral buoyancy?

• A diver suspended in water.

• A boat floating on the surface.

• A rock sinking to the bottom.

• A balloon rising in the air.

Positive buoyancy (stronger than object's weight) means an object will

• sink

• float

• submerge

• dive

Buoyancy is the ability to

• Sink

• Float

• Drown

• Submerge