1. Chapter 19: Liquids

2. Review: What is pressure?
pressure = Force
Area
There is greater pressure exerted on a small area for the same amount of force/weight.

3. What is liquid pressure?
Liquid pressure is determined by two things:
depth and
density

4. Do things weigh more on land or in water? Why?
On land, because in water there’s buoyancy.

5. Buoyancy
Buoyancy is the apparent loss of weight of an object when it’s submersed in a liquid.
The buoyant force on an object pushes upward, against gravity’s downward pull.

6. Buoyancy (cont’d) weight > buoyant force = sinks
weight < buoyant force = floats
weight = buoyant force =neither

7. Buoyancy (cont’d)

8. Buoyancy (cont’d) Buoyancy depends on volume
A completely submerged object always displaces a volume of liquid equal to its own volume.