floating and density?

Question

Answer which ever ones you can, but be sure to put the number of which question you're answering. thanks!! :)

1) How does the concept of floatation relate to the concept of density?

2)Identify 2 applications and examples of where floatation is used.

3)Does floatation only relate to liquids and solids??

Answer 1

1) Objects less dense float to the top of fluids more dense. Wood and oil are both less dense than water and both float on water.

2) Lumber-jacked trees are often floated down river to a mill. A helium balloon from a birthday party floats in air. Many of the valves in the tanks of toilets use a float to stop the water from overflowing the tank. Similarly a carburetor often contains a float valve to control the amount of gasoline which enters.

3) Floatation relates to a solid, liquid or gas in relation to a fluid. The fluid may be either a liquid or a gas. (see examples above).

Answer 2

1) The higher density object with large volume would float( also depends on the density of the medium it would float on)

2) Ships and Hot air baloon

3) Flotation also relates to Air