Float or Sink Primary

Front

What does it mean for an object to float?

Back

An object floats when it is less dense than the liquid it is in, allowing it to stay on the surface.

Front

What does it mean for an object to sink?

Back

An object sinks when it is denser than the liquid it is in, causing it to go to the bottom.

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

Can a heavy object float?

Back

Yes, a heavy object can float if it is less dense than the liquid it is in.

Front

Can a light object sink?

Back

Yes, a light object can sink if it is denser than the liquid it is in.

Front

What is an example of a floating object?

Back

A rubber duck floats in water because it is less dense than water.

Front

What is an example of a sinking object?

Back

A rock sinks in water because it is denser than water.

Front

What happens to an object that is exactly the same density as water?

Back

An object with the same density as water will neither float nor sink; it will hover in the water.

Front

What is buoyancy?

Back

Buoyancy is the upward force that a fluid exerts on an object, helping it to float.

Front

What is an example of a material that floats?

Back

Wood is an example of a material that typically floats in water.