Weather

What is Weather?
[]

1. Define weather.

2. What four factors affect weather
 * The WEATHER is the condition of the atmosphere (or changes in the atmosphere) at a particular time and place. The weather is shaped by 4 main factors: **
 * ** the air **
 * ** the sun **
 * ** water **
 * ** the earth's movement **

Weather vs Climate
__ [] __ 3. What is the difference between climate and weather?
 * Climate ** is what you expect; **Weather** is what you get.-**Climate** is about long-term records, trends and averages;
 * Weather** is the day to day experience

Air Pressure
__ [] __ 4. Complete the following chart: up ||. down || down​ ​ || up || down ||
 * || ==== **High Pressure** ==== || ====** Low Pressure **==== ||
 * Air movement (up or down) || down || ​ ​ Up ||
 * Temperature of air ||.
 * Wind movement at ground ||.
 * Expected weather || ​ up || ​
 * || == Weather Wise ==

** Measuring the Weather **
|| **Developing Skills of Inquiry, Design and Communication** - design, construct, and test a variety of weather instruments - use appropriate vocabulary, including correct science and technology terminology, in describing their investigations and observations ||

[] Use the information to complete the chart. The source of this information is American so you may have to determine the equivalent metric unit to record in the chart. barometer || ** What It Measures ** atmospheric pressure in millibars || ** Unit of Measurement ** millibars ||
 * The following web site describes some of the instruments meteorologists use to collect data about the weather. **
 * ** Instrument Name **
 * ** Thermometer ** || ** measures the temperature in degrees Celsius or degrees Fahrenheit ** || ** degrees ** ||
 * .** Rain gauge ** || ** measures the amount of rainfall in mm. Not only does a rain gauge measure rainfall, but also all other forms of precipitation. ** || ** mm ** ||
 * .** Campbell Stokes Recorder ** ||
 * measures sunshine. This type of recorder is made up of a glass ball which concentrates sunshine on to a thick piece of card. The sunshine then burns a mark on the card which shows the number of hours of sunshine in the day. ** || **sunshine ** ||
 * .** Anemometer: ** || ** measures wind speed in mph. The most common type looks like a toy windmill. Three cups are fixed to a central shaft and the stronger the wind blows the faster they spin around. The wind speed is shown on a dial, just like a car's speedometer. ** ||
 * mph ** ||
 * Wind Vane/Wind Sock ** || ** measures wind direction by pointing towards North, East, South or West ** ||
 * North, East, South or West ** ||
 * .** Hygrometer ** ||
 * measures the temperature and amount of humidity in degrees Fahrenheit and degrees Celsius. A hygrometer actually uses human hair to tell how much humidity is in the air. It contains a sheaf of blond human hairs treated to remove the oils. As the relative humidity increases, the hairs increase in length and operate the recording mechanism. ** ||
 * degrees Fahrenheit and degrees Celsius ** ||
 * ** cloud cover ** ||
 * oktas" from 1 to 8. 0 oktas means the sky is clear, 8 oktas means the sky is completely covered. The height of a cloud is measured by how far it is above sea level. ** || ** oktas ** ||
 * mph **
 * || == Weather Wise ==
 * || == Weather Wise ==

** Clouds **
|| **Understanding Basic Concepts** - explain the formation of clouds and the effects of different cloud formations on weather and climate ||

1. What are clouds?** Clouds are a visible mist of billions of water and ice particles floating in the sky ** 2. Explain how clouds form.** Clouds form when air cools below its saturation point and causes water vapor to condense into tiny water droplets. ** 3. What are the 3 "families" of clouds and what do their Latin names mean? 4. Follow the links to learn about each type of cloud and then complete the table on the next page. To help you identify clouds, download, print and construct the following "Cloud Key". [] After completing the chart, you could try a Cloud Quiz at; [] 
 * Use this web site to answer the following questions. **
 * [] **
 * Cirrus means 'curl of hair', cumulus means 'heap', and stratus means 'layer' **
 * || ==Weather Wise==

**Forecasting**
|| **Understanding Basic Concepts** -recognize large-scale and local weather systems - predict local weather patterns using data from their own observations of weather and from weather reports - identify patterns in air movement ||


 * Read the details at [] and follow the links.**

Cloud Forecasting

 * ** Cloud Type ** || ** Description ** || ** Possible Weather ** ||
 * cirrus || || ||
 * altocumulus || || ||
 * nimbostratus || || ||
 * cumulus || || ||
 * cumulonimbus || ||  ||

Wind Forecasting
Write the capital letter A or B at the end each sentence. A = Cold Front B = Warm Front 1. Cool air mass - warm air mass moves in. A 2. Warm air mass - cool air mass moves in. B 3. Brings gentle rains that may last for hours or days. B 4. Strong winds are formed followed by heavy rain, crashing thunder, and flashing lightning. A 5. When the front passes, the temperature warms up and it becomes humid. B 6. When the front passes, the weather turns cooler. A 7. Farmer Brown prefers this type of front. B 8. Usually happens and is over with quickly. A
 * **Wind Direction** || **Possible Weather** ||
 * North ||  ||
 * South ||  ||
 * East ||  ||
 * West ||  ||