CE+Lesson+4+Resources

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 * **Readings**

**Lab Sheets**

**Web Resources** **[|What is an Air Mass?]** **Live U.S. Wind Map Cool!** [|Stable and Unstable Air]
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[|Unstable Air Mass Explained]

**Videos**

**Air Masses over the US** media type="youtube" key="UmyfkXSFiZA?rel=0" width="420" height="315" **Air Masses Explained** media type="youtube" key="kzNR_tjKExU?rel=0" width="420" height="315"

**Vocabulary** **air mass** **stable air mass** **unstable air mass**