1A Our Atmosphere

The Earth's Atmosphere

Brief introduction to Earth's atmosphere and how it consists of gaseous atoms and molecules energized by solar radiation but also held down by Earth's gravity. Duration: 5:02.

Our Atmosphere's Structure

This video explores the structure, properties, and composition of the various layers of our atmosphere. Duration: 5:27.

Our Atmosphere's Composition

A survey of the composition of Earth's atmosphere introducing the units of ppm and ppb and concluding with a stunning NASA video of worldwide particulates and aerosols. Duraction: 6:48.