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Buoyancy
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Slide 1

Buoyancy

Buoyancy

Buoyancy is the ability of an object to float.

It is related to the objects density.

Slide 2

Density

Density

Density is the amount of matter in a given volume or space

Gasses are the least dense form of matter

Liquids are more dense than gasses, but less dense than solids

Solids are the most dense form of matter

Slide 3

Gasses fill any volume and take the shape of their container.

Gasses fill any volume and take the shape of their container.

If the balloon pops, the gas will spread out evenly in the cube.

Slide 4

Liquids stick together, but take the shape of their container.

Liquids stick together, but take the shape of their container.

The water will take the shape of the cube.

Slide 5

Solids are very dense and do not take the shape of their container.

Solids are very dense and do not take the shape of their container.

The rock will keep its own shape.

Slide 6

Examples

Examples

Slide 7

Last but not least

Last but not least

Buoyancy and density are called PROPERTIES of matter

Another property of matter is displacement, or how much matter (we use water) it pushes out of the way

A buoyant object will only displace its mass unless its surface area is large compared to its mass

What would happen if you used sand instead of water?

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