Warm and Cold Front Name: ______________________________________________________________ Period: _____ Date: ____________ Essential Question: How do I differentiate a cold front from a warm front? WEATHER: Weather is basically the way the atmosphere is currently behaving, mainly with respect to its effects upon life and human activities. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure, as in high and low pressure. High Air pressure means good, clear, sunny weather while low are pressure mean rainy or stormy weather. CLIMATE: Climate is the description of the long-term pattern of weather in a particular area. Some scientists define climate as the average weather for a particular region and time period, usually taken over 30-years. When scientists talk about climate, they're looking at averages of precipitation, temperature, humidity, sunshine, wind velocity, phenomena such as fog, frost, and hail storms, and other measures of the weather that occur over a long period in a particular place. Weather Fronts or simply fronts are the boundaries between air masses of different temperature. If warm air mass is moving toward cold air mass, it is a “warm front”. These are shown on weather maps as a red line with scallops on it. If cold air mass is moving toward warm air mass, then it is a “cold front”. Cold fronts are always shown as a blue line with arrow points on it. If neither air masses are moving very much, it is called a “stationary front”, shown as an alternating red and blue line. Cold fronts tend to move faster than all other types of fronts. Cold fronts tend to be associated with the most violent weather like thunderstorms, snow storm, and blizzard. Warm fronts tend to move slowly. Warm fronts are typically less violent than cold fronts. Although they can trigger thunderstorms, warm fronts are more likely to be associated with large regions of light to moderate continuous rain. The Earth’s rotation is very important to the formation of fronts. The rotation causes the wind to exhibit the Coriolis effect. The rotation of the Earth causes the wind that would normally flow directly from one air mass to another to, instead, flow around the air masses. This helps maintain the air masses’ identity, as well as the “front” between the air masses. http://www.weatherquestions.com/What_are_fronts.htm http://wiki.answers.com/Q/What_is_the_difference_between_weather_and_climate Clarifying Questions: 1. What is weather? ___________________________________________________________________________________________________________ 2. How is weather different from climate? Is it the amount of time? ___________________________________________________________________________________________________________ 3. Define the following terminologies in your own words. a. Temperature: _____________________________________________________________________________________________ b. Humidity: ________________________________________________________________________________________________ c. Precipitation: _____________________________________________________________________________________________ d. Visibility: ________________________________________________________________________________________________ e. Wind:____________________________________________________________________________________________________ f. Atmospheric pressure:______________________________________________________________________________________ 4. Why do you need to be aware of the five day weather forecast? Think! ___________________________________________________________________________________________________________ 5. What is a weather front? ___________________________________________________________________________________________________________ ___________________________________________________________________________________________________________ 6. What is a warm front? ___________________________________________________________________________________________________________ 7. Draw the symbol for the warm front. Look the figure on top –left. 8. What is a cold front? ___________________________________________________________________________________________________________ 9. Draw the symbol for the cold front. Look the figure on top –left. 10. What is stationary front? The symbol for stationary front : ___________________________________________________________________________________________________________ 11. What kind of weather is associated with cold fronts? ___________________________________________________________________________________________________________ 12. What kind of weather is associated with warm front? ___________________________________________________________________________________________________________ 13. What is responsible for the formation of front? ___________________________________________________________________________________________________________ 14. Draw and name the clouds associated with cold and warm fronts. Study the figure on top-left on the front. Cold front clouds Warm front clouds 15. The ________________ ( Rotation, Revolution)of Earth on its axis results to the ________________________ effect. This makes the wind shift to the _______ (left, right) in the northern hemisphere and to the ________(left, right) in the southern hemisphere. Research and Think! Multiple Choice: Weather A. Temperature. ____ 1. Current behavior of the atmosphere. B. Visibility ____ 2. Air pressure associated with good weather. C. Wind ____ 3. Air pressure associated with precipitation and stormy weather. D. Air pressure ____ 4. Measured by using a thermometer. E. High air pressure ____ 5. Refers to the amount of water vapor in the air. ____ 6. Any form of water falling from aloft or upper troposphere. F. Weather ____ 7. How far we see. G. Low air pressure ____8. Moves from high air pressure to low air pressure, moving air. H. Precipitation ____ 9. Amount of air. Multiple Choice: Fronts A. weather front or front ____ 10. The description of the long-term pattern of weather in B. Cold front a particular area. C. Fastest ____ 11. The boundaries between air masses of different temperature ____ 12. Warm air mass is moving toward cold air mass D. climate ____ 13. Cold air mass is moving toward warm air mass E. Violent ____ 14. Neither air masses are moving very much F. warm front ____ 15. Cold fronts are the _________ fronts G. Stationary front ____ 16. Cold fronts are associated with ________ weather. ____ 17. The rotation of the Earth causes the wind to shift to right and left. H. Coriolis effect R. E. Angat Warm and cold front http://www.youtube.com/watch?v=vPC5i6w3yDI Predicting weather http://www.youtube.com/watch?v=dqpFU5SRPgY Coriolis Effect http://www.youtube.com/watch?v=aeY9tY9vKgs Intro to weather http://www.youtube.com/watch?v=kr2soYHLv74 Weather High air pressure Low air pressure Temperature. Precipitation Visibility Wind Air pressure climate weather front or front warm front Cold front Stationary front Fastest Violent Coriolis effect .