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Remote sensing detects both human and physical features by using seven distinct image elements: tone, shape, size, pattern, texture, shadow and association. Students are introduced to each of these elements individually through images, descriptions... (View More)

This activity is about crater formation in the solar system. Through a simulation using mud and other materials, learners will observe crater formation and identify the distinctive features of impact sites. A diagram with crater features labeled is... (View More)

In this activity, learners will use web-based satellite images and other data to investigate the ocean near six different harbors and determine where nature helps the most when it comes to dealing with an oil spill. They will then fill out a mock... (View More)

Audience: Middle school
Materials Cost: Free

This video demonstrates students measuring the acidity of water, using pH indicator paper and a pH meter. The resource includes a video and a written transcript, and is supported by the Water pH Protocol in the GLOBE Teacher's Guide. This is one of... (View More)

This video demonstrates students measuring the alkalinity of a water sample, using an alkalinity test kit. The resource includes a video and a written transcript, and is supported by the Alkalinity Protocol in the GLOBE Teacher's Guide. This is one... (View More)

This video describes how to select a soil infiltration study site, and demonstrates procedures used when taking soil infiltration in the field. Instructions for fabricating a necessary piece of field equipment, a dual-ring soil infiltrometer, are... (View More)

Similar features exist on the surfaces of Earth and Mars. This investigation includes satellite images of five Earth features and five Martian features, none of which are labeled. Students must compare and contrast those images to produce five... (View More)

In this activity, students compare and contrast the visual perspectives that result when viewing objects from different distances. In part one of this lesson, students view simple shapes from varying distances and record their observations. Then, in... (View More)

Comparing the amounts of land and water on Earth's surface leads students to discover why it is called the water planet. Students examine photos of Earth taken from space, analyze the results of a globe toss game and compare ocean sizes using pieces... (View More)

Audience: Elementary school
Materials Cost: 1 cent - $1 per student

This video highlights students taking scientific measurements to support investigations in atmospheric science, hydrology, soils, and land cover. It shows students reporting data through the Web, creating scientific visualizations for analysis, and... (View More)