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Link to Resource:	https://www.weather.gov/jetstream/ll_collisions
Resource Type:	Classroom Activities; Curricula and Instruction
Grade Level:	6 7 8 9 10 11 12
Language:	English
Organization:	National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)
Summary:	Collision and coalescence is the process by which cloud droplets grow large enough to fall as rain in clouds. You will suspend two ping pong balls in the stream of air supplied by a hair dryer. The balls will bump into each other, creating a clicking sound signifying the collision.
Earth Science Big Ideas:	Big Idea 1; Big Idea 3
NGSS Discplinary Core Ideas:	ESS2.D
Subjects:	6-8; 9-12; atmosphere; atmospheric science; high school; lesson; meteorology; middle school; noaa; nws; weather; wind
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Learning Lesson: Toasty Wind by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Quadraphonic Wind by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Pie in the Sky by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Sizing Up Hail by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: How it is Currently Done by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Diet Light by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Heavy Air by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

"Learning Lesson: Measure the Pressure: The """"Wet"""" Barometer" by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

"Learning Lesson: Measure the Pressure II: The """"Dry"""" Barometer" by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Drawing Conclusions by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Smoking Clouds by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: A Pressing Engagement by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Going with the Flow by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Crunch Time by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Determining distance to a Thunderstorm by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: AM in the PM by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning lesson: How much water is in that cloud? by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning lesson: Leaf it to Me by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Twirling in the Breeze by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)
Published: (2010)

Learning Lesson: Updrafts in Action by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: That Sinking Feeling by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Head in the Clouds by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

"Learning Lesson: It's the """"Rain"""" Man" by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: The Rain Man by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Atmospheric Science Literacy Framework by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Zone by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Tracking a Storm by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

"Learning Lesson: A """"Hole"""" lot of clouds" by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Canned Heat by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning lesson: Water, Water Everywhere by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Curriculum Collections: Why is Antarctica the Windiest Place on Earth? by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: The Shadow Knows II by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

National Weather Association (NWA) SOL HIRSCH Education Fund Grants by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning lesson: Moonlight Serenade by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Airborne Wind Energy by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)
Published: (2011)

Learning Lesson: Sweatin' to the Coldies by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

National Weather Camp at The University of Nebraska-Lincoln by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Salt 'n Lighter by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: A Funny Taste by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)

Learning Lesson: Melts in your bag, not in your hands by National Oceanic and Atmospheric Administration (NOAA); National Weather Service (NWS)