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.
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Watch NASA videos about aerosols and volcanic ash and answer questions.
The students will review the NASA Space Place video, "What are Tectonic Plates?", and answer questions about tectonic plates.
(Different graphs of the same data do not convey the same information.)