weather

95%
 * || == Weather Wise ==

** The Elements of Weather **
|| **Understanding Basic Concepts** - explain the difference between weather and climate and the factors that influence both of these systems - identify patterns in air movement - identify the effects of air pressure ||

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.


 * Climate** is the sum or synthesis of all the weather recorded over a long period of time. It tells us the average or most common conditions, or extremes, or counts of events, or frequencies. **Weather** is a description of conditions over a short period of time - a "snap shot" of the atmosphere at a particular time.

If **weather** is the watch then **climate** is the calendar.

Air Pressure
__ [] __ 4. Complete the following chart:


 * || ==== **High Pressure** ==== || ====** Low Pressure **==== ||
 * Air movement (up or down) || down || up ||
 * Temperature of air || is warm || o cold ||
 * Wind movement at ground || when cold air || when warm air ||
 * Expected weather || good || bad ||


 * || == 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 ||

[]
 * The following web site describes some of the instruments meteorologists use to collect data about the weather. **

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.

measures the amount of rainfall || measures sunshine ||
 * ** Instrument Name ** || ** What It Measures ** || ** Unit of Measurement ** ||
 * .** Barometer: ** || measures atmosheric pressure ||
 * in Millibars. ** ||
 * .** Thermometer: ** || measures the temperature in degrees celsius ||.
 * degrees Fahrenheit ** ||
 * Rain gauge: ** ||
 * Rain gauge: ** ||
 * in mm. ** ||
 * .** Campbell Stokes Recorder ** ||
 * sunshine. ** ||
 * Anemometer: ** || measures wind speed || ** in mph. ** ||
 * Wind Vane/Wind Sock: ** || measures wind directoin || ** by pointing towards North, East, South or West ** ||
 * Hygrometer: ** || measures temp || ** and amount of humidity in degrees Fahrenheit and degrees Celsius. ** ||
 * Wind Vane/Wind Sock: ** || measures wind directoin || ** by pointing towards North, East, South or West ** ||
 * Hygrometer: ** || measures temp || ** and amount of humidity in degrees Fahrenheit and degrees Celsius. ** ||
 * Hygrometer: ** || measures temp || ** and amount of humidity in degrees Fahrenheit and degrees Celsius. ** ||


 * || == 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? 2. Explain how clouds form. 3. What are the 3 "families" of clouds and what do their Latin names mean? [|Cumulus] [|Cirrus] | [|Stratus] 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. **
 * [] **
 * Fog is a cloud that is on ground level. Clouds are a visible mist of billions of water and ice particles floating in the sky. Clouds form when air cools below its saturation point and causes water vapor to condense into tiny water droplets. The water droplets then form a cloud. The cooling is usually caused by by rising air, the way that the air rises effects the type of cloud that is produced. The names of the clouds give a clue about shape of the cloud. There are three families of clouds: cirrus, cumulus, and stratus. These are the latin names given to clouds in 1804. 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 ||

The following questions and organizers will help you keep track of the crucial information you’ll need.
 * Read the details at [] and follow the links.**

Cloud Forecasting
often seen in clear skies || GOOD WEATHER! || like clouds made of ice and water at middleheights || snowy or rainy || "grow" during sunny days. || fair || thatt towers to hights. || thunder storm, rain, hail winds ||
 * **Cloud Type** || **Description** || **Possible Weather** ||
 * cirrus || high wispy ice clouds.
 * altocumulus || thick blue-gray blankets
 * nimbostratus ||  ||   ||
 * cumulus || fluffy lower clouds that often
 * cumulonimbus || giant thunderinghead clouds

Wind Forecasting
What can make the above predictions inaccurate?
 * **Wind Direction** || **Possible Weather** ||
 * North ||  ||
 * South ||  ||
 * East ||  ||
 * West ||  ||

Senses Forecasting
What might you hear that can help you forecast the weather?


 * == Weather Wise ==

**Warm and Cold Fronts **
|| **Understanding Basic Concepts** - explain the difference between warm and cold fronts and the factors that influence both of these systems - identify types of weather associated with each front || []

[]

[]

**__A Cold Front__**

A cold front happens when a fast-moving mass of cold air hits a warm air mass. The warm air, which holds a lot of water vapour, gets pushed upward quickly.

A warm front happens when a fast moving mass of warm air encounters a cold air mass, and rides up on top of it. The warm, humid air eventually rises high enough for water droplets and clouds to form, and rain to fall.

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.B 2. Warm air mass - cool air mass moves in.A 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 quicklyA.

[] __ [] __