What is a fluid?
-any substance that flows
-can be a liquid or a gas
Buoyancy: is the ability for some-thing to float in a fluid.
-doing a hand-stand is easy to do in water because of the buoyant force.
-buoy's (in water) are called buoy's because they are buoyant.
-in a hot air balloon, the air is buoyant so it floats.
-life jacket's help lower the density of the person wearing it to help them float.
Viscosity: the measure of how fast a fluid flows, or how thick or thin it is.
-Water vs. honey. Water has a high viscosity, honey has a low viscosity.
-Tar vs. milk. Milk has a high viscosity, honey has a low viscosity.
-Molasses vs. coffee. Coffee has a high viscosity, molasses has a low viscosity.
Density: The amount for mass (weight) in a substance. Particles are being crowded.
- If 11 people (particles) we all in an elevator, the more mass, compared to two people (particles) in an elevator.
Pressure: is a force acting on a fluid.
- When you take the cork out of a wine bottle, the wine comes out.
I took this picture with Mrs. Thompson's I-phone. Took in 2014.