Students review a video that models the global impact of smoke from fires to develop an understanding of how models can be used to interpret and forecast phenomena in the Earth System. 

Watch NASA videos about aerosols and volcanic ash.

Students examine satellite images of a recently formed island to identify areas of erosion and deposition.

Examine the images to see the projected differences in land use between 1900 and 2100. 

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

Explore using units for calculations with Normalized Difference Vegetation Index (NDVI). NDVI is a ratio of different light wavelength reflectance which can be used to map the density of green vegetation.