Air quality is a measure of the pollution level in the air. Polluted air can be caused by many things. There are manmade and natural sources of emissions. 

In this NASA-JPL lesson, students create a model of a volcano, produce and record lava flows, and interpret geologic history through volcano formation and excavation. 

Phytoplankton distribution background information.

Use the AirNow.gov website to determine current air quality in US locations, as well as other information.

Students model Earth's tectonic plate movement and explore the relationship between these movements and different types of volcanoes.

Background information on the El Nino Southern Oscillation or ENSO.

Students review a video showing how the ocean is warmed by solar energy. This is the first video of a four-part series on the water cycle, which follows the journey of water from the ocean to the atmosphere, to the land, and back again to the ocean.

Students analyze a graph that illustrates the change in global surface temperature relative to 1951-1980 average temperatures.

NASA Earth Observations (NEO) strives to make global satellite imagery as accessible as possible. Here you can browse and download imagery of satellite data from NASA's constellation of Earth Observing System satellites.

Students observe seasonal images of Monthly Leaf Area, looking for any changes that are occurring throughout the year.