Period+3+Group+6

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

=We can determine that water vapor is in the air by making it condense, it gets there through evaporation. We learned this in the ice and water in a cup lab. In the lab we put ice in water colored green and we let it sit so that we could see it get the water vapor in the air to condense on the side of the cup. In the analysis of this lab we learned how it got in the air. We learned it got there through evaporation of bodies of water and through transpiration, which is through plants. It is also through resperation, which is done through animals.= = = = = =Humidity is the amount of water vapor in the air and it's measured as a percent. We learned about humidity in investigation 1 when we learned about a hygrometer. We learned that a hygrometer measured the amount of water vapor in the air and that it was called humidity. We learned how it was measured in the analysis of the dew point lab. We learned that it was measured in a percent and that it was a comparison of amount of water vapor in the air and the amount it can hold. You can also use the humidity calculator to find the humidity in the air. Relative humidity is comparing the amount of water vapor in the air compared to how much water vapor is needed to saturate the volume of air at a specific temperature.= =Dew point is the point at which air is saturated, it is measured in degrees Celsius. Although there is no specific tool that measures dewpoint. We learned this in the in analysis of the dew point lab. We learned the temperature at which condensation starts is the dew point, because dew point is the point at which air is saturated. We also learned it and how it was measured in the //Dragon's Breath// article. We learned that it is measured in degrees Celsius. We know to use the table we saw in the article to see the dew point at a certain temperature.= =Clouds and dew form from condensation. We learned this in our analysis of the cloud in a bottle lab. We learned air is heated and rises, it cools as it gets higher into the upper atmosphere. When it reaches dew point and is saturated it forms a cloud. A cloud is made of water droplets which condensed onto condensation nuclei. Then millions of condensation nuclei come together to form a cloud. When there are water droplets in the cloud precipitation happens which could be rain or snow. To form dew air reaches dew point near the ground and water vapor condenses onto the grass and other surfaces.=
 * 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?**