## Sunday, January 8, 2012

### The Week of January 9th, 2012

Welcome to the first full week of 2012!  Get ready for a super busy week.  In math, we will be studying finding area of squares, rectangles, and parallelograms.  You will have plenty of opportunities in class to practice this skill and some homework to do, also.  Pay extra attention so you don't mix up perimeter (that we studied last week) and area!

In science, we will continue to talk about climate and weather.  We will have a vocabulary test on Tuesday and a chapter test on Friday based on the following study guide pasted at the end of this blog entry.  Mr. Brandon will be stopping by Monday to do a fun experiment on the water cycle with you.  Mr. Brian will also be available to answer all of your questions associated with your "Water Molecule Story".  Don't forget that your "Cloudy with a Change of Learning" choice sheet is due Friday, also.  Make sure you save up enough energy to enjoy our field trip to the Mighty 8th Air Force Museum on Friday!  Your permission slip and \$5 are due to me by Wednesday.

See you tomorrow,
Mr. Trent

The Atmosphere
1.     78% of our atmosphere is Nitogen, 21% is Oxygen, and the remaining 1% is a mixture of other gases.
2.     Layers of the Atmosphere
a.      Troposphere- lowest level where weather happens.
b.     Stratosphere- gases are layered in this layer
c.      Mesosphere- coldest layer
d.     Thermosphere- highest layer, hottest layer

The Water Cycle
1.     The water cycle is the continuous movement of water from sources on Earth’s surface into the air, onto and over the land, into the ground, and back to the surface.
2.     The sun “fuels” the water cycle
3.     Humidity- the amount of water in the air
4.     Evaporation- water changing from a liquid to a gas
5.     Condensation- water changing from a gas to a liquid
6.     Dew Point- the temperature at which water in a gaseous state changes to a liquid

Clouds
1.     Cloud- a collection of small water droplets or ice crystals
suspended in the air, which forms when the air is cooled and condensation forms.
a.  Cumulus Clouds- puffy, white clouds with flat bottoms.
b.  Cumulonimbus Clouds- large, black storm clouds.
c.  Stratus Clouds- layered gray clouds that bring long periods
of rain or snow.
d.  Cirrus Clouds- thin, feathery, high clouds.

Air Masses
1.     Maritime- form over water (bring wet weather)
2.     Continental- form over land (bring dry weather)
3.     Tropical- form near the equator (bring warm weather)
4.     Polar- form near the poles (bring cold weather)

Types of Weather Fronts
When large masses of warm air and cold air meet, they do not mix. Instead, they form a front, usually hundreds of miles long. When a front passes, the weather changes. The chart describes the four main types of fronts and the weather changes each type brings.

 Type of Front How It Forms Weather it Brings Cold front Forms when a cold air mass pushes under a warm air mass, forcing the warm air to rise. Thunderheads can form as the moisture in the warm air mass rises, cools, and condenses. As the front moves through, cool, fair weather is likely to follow. Warm front Forms when a moist, warm air mass slides up and over a cold air mass. As the warm air mass rises, it condenses into a broad area of clouds. A warm front brings gentle rain or light snow, followed by warmer, milder weather. Stationary front Forms when warm and cold air meet and neither air mass has the force to move the other. They remain stationary, or “standing still.” Where the warm and cold air meet, clouds and fog form, and it may rain or snow. Can bring many days of clouds and precipi- tation. Occluded Front Forms when a warm air mass gets caught between two cold air masses. The warm air mass rises as the cool air masses push and meet in the middle. The temperature drops as the warm air mass is occluded, or “cut off,” from the ground and pushed upward. Can bring strong winds and heavy precipitation.