1. A decrease in pressure causes the volume of a balloon to increase. This is because there is less pressure pushing on the balloon, so it is free to expand.
2. Adding more gas to a bottle increases the pressure in that bottle. More gas takes up more space, so in order for the bottle to have all of that gas, it needs to compress it more, thus creating more pressure.
3. As the volume of a cylinder is increased the pressure will decrease. There is more room for the molecules to move around and not be as compressed, so the pressure will decrease.
4. Increasing the pressure in a tire by adding more gas will cause the volume to increase. When gas is in the tire it will inflate a little bit to hold all of the gas, like a balloon.
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. the more gas that is created, the more it will push on the water underneath it.
6. As the air pressure above a liquid is increased by adding more air, the boiling point of the liquid will increase. The higher the pressure, the more energy it takes to boil the liquid.
7. If a balloon filled with air is taken under water to a depth of 10 feet, it’s volume will decrease. This is because of the pressure of the water pushing on the balloon.
8. The temperature of a beaker of boiling water will increase as more heat is added. This is true because temperature is a measure of heat. So if there's more heat, the temperature is higher.
9. Hot air rises because it is less dense the cold air around it. Since it is less dense, its molecules can easily get by the cold air.
10. When heated, the volume occupied by air in a balloon will increase. Heating a balloon would cause the gas molecules inside of it to start moving faster and taking up more space.
Most of my predictions were correct, but some were not. It surprised me that the temperature of the water didn't change when put in the vacuum. I thought the temperature would decrease. What surprised me even more was the fact that it started boiling. Before, I thought you had to have heat in order for liquids to boil.
Enrichment: The workers created a vacuum by sealing off the tanker, with all of the hot steam inside of it. When the temperature dropped, the pressure changed so quickly that it crushed then tanker. This is similar to what we did when we flipped the can with boiling water into the ice water.
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