Atmosphere study guide - PowerPoint PPT Presentation

Atmosphere Study Guide

Atmosphere Study Guide. 1. What are the two most abundant elements in the atmosphere (percentage)?. 1. Nitrogen – 78% 2. Oxygen – 21%. 2. What is water vapor?. Water that is in a gas form source of water: vapor: evaporation from Earth’s surface.

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Weather Fronts

Weather Fronts. Front : the boundary that separates two different air masses. There are four types of fronts. Warm Fronts Cold Fronts Stationary Fronts Occluded Fronts. Warm Fronts. Forms when warm air moves into an area formerly covered by cooler air

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