There are many satellites which orbit the earth and takes infra-red photographic images. These images are used by scientists to understand the systems which govern the earth and how man has an impact upon these systems.

Careful interpretation of these images allows scientists to keep track of changing land use, the status of natural resources, and interactions among the biosphere, atmosphere, hydrosphere, and geosphere. But accurate and systematic interpretation of images takes training and experience. When interpreting an image, scientists pay careful attention to several key factors: shape, size, texture, location, and association. Color can be an important factor also, however, it is important to remember that many images are in false-color (as with the infrared images in this exercise).

The following exercises will test your skills at interpreting satellite images.