Buoyancy

If an object is naturally buoyant, it will ___________.

• sink

• neither float nor sink

• float

• objects cannot be neutrally buoyant

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

• sinks

• neutrally buoyant

• floats

• I don't know

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

• sinks

• neutrally buoyant

• floats

• I don't know

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

• sinks

• neutrally buoyant

• floats

• I don't know

If we place an empty sealed plastic bottle in water, we know it will float. What could we do to make it sink?

• You can't make a plastic bottle sink

• Fill the bottle with helium

• increase mass (fill it with coins)

• Decrease mass (use a bottle made out of lighter plastic)

If an object, such as a ball of clay sinks, what would we need to do to its volume to make it float?

• Clay can't float.

• Decrease the volume.

• Increase the volume.

• Keep the volume the same.

Which properties affect buoyancy? (Select all that apply.)

• mass

• density

• volume

• luster

The density of fresh water is 1 g/cm^3. Imagine the clay boat you just designed has a density of 1.5 g/cm^3. What would happen to your boat if you place it in fresh water?

• sink

• neutrally buoyant

• float

• cannot be determined

The density of fresh water is 1 g/cm^3. Imagine the clay boat you just designed has a density of 0.8 g/cm^3. What would happen to your boat if you place it in fresh water?

• sink

• neutrally buoyant

• float

• cannot be determined

The density of fresh water is 1 g/cm^3. Imagine the clay boat you just designed has a density of exactly 1 g/cm^3. What would happen to your boat if you place it in fresh water?

• sink

• neutrally buoyant

• float

• cannot be determined