Blog 4.1 Fun with Air Pressure

1. A decrease in pressure causes the volume of a balloon to increase. Because more molecules are bouncing inside of the balloon rather than outside, which inflates the walls of the balloon. The volume of the balloon won't stop increasing until the molecules bouncing inside and outside the balloon are equal.
2. Adding more gas to a bottle will increase the pressure in that bottle. Because When additional gas are added to the bottle, since there are more molecules in the bottle , they bounce around more than outside,increasing the pressure. 
3. As the volume of a cylinder is increased the pressure will decrease. When the volume of an object is increases, there is more area for the molecules to float around before they hit a wall.Since they have more room to float,the walls will be hit less than if the volume was smaller, therefore a decrease in the pressure.
4. Increasing the pressure in a tire by adding more gas will cause the volume to increase.When gas is added to a tire,more molecules are bouncing around inside. The pressure would then increase because the walls of the tire are bounced off of more often. 
5. As the temperature of a closed container of water is increased the amount of water vapor above the water causes an increase in vapor pressure. At the higher temperature you heat the water, the more water vapor will be produced. Since there's more vapor as the temperature increases, there will be a higher pressure as well.
6.  As the air pressure above a liquid is increased by adding more air, the boiling point of the liquid will remain the same. If air is blown above the liquid, the molecules in the air will bounce around in all directions. They will venture away from the liquid. if any molecules bounced off the liquid , the boiling point wouldnt have changed much.
7. If a ballon filled with air is taken under water to a depth of 10 feet,  it's volume will increase. The molecules in the air inside of the ballon will be rapidly boucing around,while low,if any,movement of molecules in water would be much too slow, hitting th balloon's exterior less. The ballon will then shrink.
8.  The temperature of a beaker of boiling water will increase as more heat is added. The heat is energy, and when more of it is put inside of the water, the temperature will increase.
9. Hot air rises because it is less dense the cold air around it. The molecules in a cold air have a stronger attraction than the molecules in hot air, and since the cold air doesnt have as much mobility as the hot ait it sinks to the bottom.
10. When heated, the volume occupied by air in ballon will increase.  The molecules will speed up when the balloon will be heated, therefore making the molecules bounces off the walls more.  As the walls are being bounce off of, the ballon expands.