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Weather Factors Mr. Fetch’s Earth Science Classroom Teaching Topics GROUP 1 What is weather Temperature GROUP 2 Wind Barometric Pressure GROUP 3 Moisture in the Atmosphere GROUP 4 Prepare a short lesson on your section of the material to present to the class. Describe in detail the information in your notes. You will be “teaching” the class this material. Not me!! You must be able to explain the pictures in your notes. I will have them on the board. Use them as you teach the class. Moisture or Humidity (don’t to Relative Humidity) Mr. Fetch’s Earth Science Classroom What causes weather? The sun warms earth’s surface increasing its temperature. The sun’s energy is used to evaporate water and put moisture into the air. Air rises and cools to form clouds • The transfer of energy between: - The sun - Earth’s surface - The Atmosphere. Water vapor condenses to from precipitation and releases energy into the atmosphere Unequal heating and differences in air pressure cause wind.Mr. Fetch’s Earth Science Classroom Temperature Mr. Fetch’s Earth Science Classroom Temperature through the Day Mr. Fetch’s Earth Science Classroom Factors that affect temperature Cities are Warmer Mountains are Colder Cloudy days Cloudy nights are Cooler are Warmer Mr. Fetch’s Earth Science Classroom Wind Mr. Fetch’s Earth Science Classroom Barometric Pressure Mr. Fetch’s Earth Science Classroom Moisture: Change of State Sublimation Uses Heat EVAPORATION MELTING Uses Heat Uses Heat CONDENSATION FREEZING Gives off Heat Gives off Heat Deposition Gives off Heat Mr. Fetch’s Earth Science Classroom Warm air holds more moisture than cold air. Mr. Fetch’s Earth Science Classroom Relative Humidity Mr. Fetch’s Earth Science Classroom