Air Pressure

1. What is air pressure?
the force exerted by air, whether compressed or unconfined, on any surface in contact with it
2. Where is the closest high pressure system to Fayetteville? (city, state)
Lexington-Fayette, Kentucky
3. What is the weather (temperature, precipitation, cloud cover) like there?
57 degrees, no precipitation, and partly cloudy
4. Where is the closest low pressure system to Fayetteville? (city, state)
Grand Island, Nebraska
5. What is the weather (temperature, precipitation, cloud cover) like there?
55 degrees, no precipitation, and no cloud cover

Earth Hour

1. Turn off their lights.
2. To lower carbon emissions.
3. In Sydney in 2007.
4. Turn on the lights; turn on the lights.
5. Cut off the circut breaker, turn of the lights, go to walmart, tell everybody about it, and go to the power plant and turn it off.

Chapter 18 Webquest

Here is a link to my chapter 18 webquest.

Air Masses

1. Their are cT, cP, mT, and mP. m stands for maritime, c stnds for continental, P stands for polar, and T stands for tropical.
2. I think mT air masses bring hurricanes.
3. I think cT air masses bring droughts.
4. I think cP air masses bring lake-effect snowstorms.
5. There also are arctic and highland. Arctic comes from northern Canada. This air often forms when a high pressure area becomes nearly stationary over Eastern Alaska and the Yukon. And highland occurs in regions with large elevation changes over short distance. It is not a source region for one particular type of air mass. Since highland climates are in an elevated terrain, they can promote dryness in the interior of the highland climate. When air masses enter a highland climate they modify due to these elevation changes.

Dating methods

1. Relative dating is the dating of rocks but not by years.
2. Radiometric is used for old rocks.
3. Radiocarbon is for young rocks.
4. Cut out a core sample, count the rings for the age, and look at the wideness of the rings to see if it experienced dry or wet seasons.
5. A half-life is the amount of time necessary for one half of the nuclei in a sample to decay to its stable isotope.