Period+3+Group+5

Response to Investigation 6 Essential Question(s)**
 * Period 3 Group 5

=We can determine that water vapor is in the air by making the water vapor molecules loose molecular motion to turn back into a liquid. We found this out in an experiment /lab we did in class. We took a cup of ice water and left it on our desks, then we observed it. When we were observing it, we watched and saw water condense on the outside of our cup. There weren't any cracks or leaks in the cup, so the only place possible for the water to come from is the air. The water vapor in the air became cooler, turned back into a liquid, and condensed to the colder surface proving that there is water vapor in the air.= =Water vapor gets in our air by evaporation. We know this from a demonstration we did in class. We dipped our fingers in water and made a circle with it on the top of our hand. Because our hand was a warmer surface, the particles in the water gained molecular motion due to conduction.(heat travels from hot to cold). Once the molecules gained enough molecular motion, the molecules evaporated and rose up into the air. When liquid water is heated up, it evaporates turning from a liquid to a gas called water vapor. The water in the air is just not in liquid form.= =Humidity is the amount of water vapor in the air.I know this information from The dragon's breath article I read. This information was from investigation 1 when we had the hygrometer that measured humidity. It was in percent the measurement when we went outside to measure weather factors with tools.= =Dew point is the temperature when saturated,which air turns back into a liquid. It is measured in degrees Celsius, which explains about relative humidity, dew point, etc. It explains exactly what dew point really is.= =Clouds form when water vapor in the air attaches onto a condensation nuclei, a surface where water vapor condenses in the atmosphere. Condensation nuclei can be anything from dirt to pollution, you name it. Dew is formed in a similar war. Water vapor condenses to a colder surface such as grass. I know this because of our bottle demonstration where we saw it when you added ice.=
 * How can we determine that water vapor is in the air and how does it get there? What is humidity and what is dew point and how are each measured? How do clouds and dew form?**