The purpose of the resource is to produce a land cover type map from the digital file of a Landsat satellite image using MultiSpec software.
Earth and all the other planets and moons of our Solar System have been continuously pelted by asteroids and comets ever since their formation. On Earth, wind and water have eroded away most of the evidence; various other geologic processes have concealed it; oceans and vegetation now cover much of the rest. This activity will help your students understand how NASA scientists are discovering evidence of impact craters through satellite images and technology, which enables us to see landforms that we can't see with our eyes alone. Students consider the sudden release of a tremendous amount of kinetic energy when an extraterrestrial object strikes the Earth. They write about the effects that such a collision might have on the land, atmosphere, water, and living things. Students then read descriptions of the actual effects of impact events and the evidence these leave behind. In small groups, they study satellite images that show possible evidence of impact events. They select one or two of these images to interpret for the class. In their interpretations, they explain how the image does or does not show evidence of an impact event. To demonstrate their understanding of the role of impact events in shaping the Earth, students write a series of guidance questions for a field expedition to determine whether or not a given landform is an impact crater.
The purpose of the resource is to investigate changes in the major land cover types of Study Sites by examining Landsat satellite images acquired years apart.
The long operational history of the Landsat satellite allows a detailed study of urban growth around the world, as illustrated by this animation of urbanization around Shenzen, China.
The long operational history of the Landsat satellite allows a detailed study of urban growth around the world, as illustrated by this animation of urbanization around Shenzen, China.
The long operational history of the Landsat satellite allows a detailed study of urban growth around the world, as illustrated by this animation of urbanization around Shenzen, China.
This site provides a number of Landsat 7 scene subsets as LAN files that are intended for use with Purdue University's MultiSpec software. Users also have the option of downloading the Landsat images as TIFF files in four different band combinations. Links are included to download Multi-Spec, a MultiSpec tutorial, and an introduction to remote-sensing PowerPoint presentation with detailed notes.
This lithograph shows a Landsat 7 image of New York City and includes an activity for children ages 5-9. The imagery highlights vegetation, emphasizing location, with additional information, classroom activities or discus-shape and sizes of parks. The activity engages children in following Amelia the Pigeon's adventure around the parks in New York City. The lithograph is a companion piece to the Amelia the Pigeon Interactive Adventure (http://imagers.gsfc.nasa.gov/amelia).
