1. Review your clouds notes! HINT: There is a formative after this slide! 1.Check in 2.Get your papers (YES, even the blank paper!) 3.Do Warm Up

2. Clouds Quick Check FORMATIVE Add “Cumulonimbus” to the word bank We will go over the answers!

3. Air Masses large body of air that has the same properties as the area of the Earth’s surface over which it forms. For example, deserts produce hot dry air masses.

4. Air Masses (continued) Warm Moist Cool Moist Cool Dry Warm Dry Warm Moist Cool Moist

5. Fronts The place where air masses meet is called a front. Weather is caused by the way these air masses interact. Fronts: https://www.youtube.com/ watch?v=9U0W3-pruuY http://www.youtube.com/watch?v=Mp29NF9jQqg

6. Cold Fronts Incoming dense cold air pushes up warm air This forms a narrow band of violent storms http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/

7. Warm Fronts Warm air slides over departing cool air. This forms feathery clouds then stratus then rain. http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/

8. Stationary Front A cool air mass and a warm air masses meet and stop moving (neither one advances). This causes a few days of rainy and windy weather. http://www.phschool.com/atschool/phsciexp/active_art/weather_fronts/

9. Stationary Warm Front Cold Front Create a front flip book Follow all directions to create your study book SHARE all color pencils, scissors, and supplies Not sure what to do? ASK! Put your name on the back~ Do this first! Turn it in when you are done. Then do the flip book. Draw Picture on the front! Write description and weather that it brings on the inside! Fronts Worksheet http://studyjams.scholastic.com/studyjams/jams/science/weather-and-climate/air- masses-and-fronts.htm

10. https://www.youtube.com/watch?v=Yeut C1WN6dc https://www.youtube.com/watch?v=Yeut C1WN6dc