This first video shows that increased pressure causes the air in the dropper to contract. That makes the water level in the dropper to increase to the point that the dropper sinks because it is more dense.
We also discussed Bernoulli's effect. A moving fluid (air) will cause a low pressure area. Substances will move toward a high pressure into a low pressure. The slip of paper moves up into the low pressure created by the moving air above it.
These "Kissing Balloons" illustrate Bernoulli's effect as well.
Here are the Google drive links for the Power Points for Chapter 19.
CHAPTER 19A
CHAPTER 19B
CHAPTER 19C
CHAPTER 19D
