Bill Nye Buoyancy Video

The reason why some things float or sink is because water is...

• Water repels it

• Gravity stops

• Water is heavy

• Magic

If you were to weigh the water displaced by a boat, the water would be equal to the weight of the

• The boat

• Everything in the boat

• The Boat and Everything in it

What is displacement?

• A bad place

• Where you are

• To push away

• To take up space

Objects displace as much water as they ...

• weigh

• can

Floating and Sinking: Why does the tennis ball that is cut in half float higher in the water than the tennis ball that isn’t cut in half?

• the water weighs less

• the tennis ball weighs less

• the air is released

• The water weighs more

EUREKA is Greek for ...

• Science!

• Bath tub!

• I found it!

• It sinks!

When something sinks we say it is _____________buoyant

• Positively

• Negatively

• Neutrally

• Floaty

When something floats we say it is _____________buoyant.

• Positively

• Negatively

• Neutrally

• Floaty

When something does not sink or float, we say it is ___________buoyant

• Positively

• Negatively

• Neutrally

• Floaty

What do scuba divers use to change their buoyancy?

• Life vests

• Air Tanks

• Flippers

• Buoyancy Compensators