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This video provides a step-by-step guide to determining nitrate and nitrite concentrations in a water sample, using a nitrate testing kit. It describes what chemical reactions are taking place throughout the testing process. The resource includes a video and a written transcript, and is supported by the Nitrate Protocol in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: History and philosophy of science, Hydrology, Physical oceanography
 
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The video is a procedural guide to sampling salinity measurements in water bodies in the field. It provides a step-by-step explanation of field procedures and features students conducting the investigation and asking questions about what changes in salinity could indicate in rivers, lakes, and estuaries. The resource includes a video, transcript, and is supported by the Salinity Protocol in the GLOBE ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: History and philosophy of science, Hydrology, Physical oceanography
 
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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 seven videos on hydrology in the 24-part instructional video series describing scientific protocols used by GLOBE (Global Learning and Observation to Benefit ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: History and philosophy of science, Hydrology, Physical oceanography
 
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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 collaborating with students and scientists around the world. This is one of two introductory videos in the 24-part GLOBE video series. GLOBE (Global Learning ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Atmospheric science, Biology, Climatology, Physical geography, Geochemistry, History and philosophy of science, Hydrology, Physical oceanography
 
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This video demonstrates students locating and preparing a study site where they can conduct field observations. The procedure used when describing a soil profile is outlined. The properties of soil are described, including the structure, color, consistence, and texture, as well as the presence of roots, rocks and free carbonates. Safety precautions are stressed. The resource includes a video and a ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Physical geography, Geology, History and philosophy of science
 
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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 provided. The resource includes a video and a written transcript, and is supported by the Soil Infiltration Protocol in the GLOBE Teacher's Guide. This is ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Physical geography, Geochemistry, History and philosophy of science, Hydrology, Physical oceanography
 
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This video provides step-by-step instructions for collecting soil samples in the field, and for analyzing and storing soil samples in the lab. Procedures for determining the bulk density, particle density, particle size distribution, fertility, and pH of a soil are demonstrated. The resource includes a video and a written transcript, and is supported by the Soil Characterization, Lab Measurement Protocols ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Geology, History and philosophy of science
 
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This video describes how to select a soil moisture study site and sampling strategy, and identifies what laboratory instruments will be needed to complete a soil moisture analysis. Students are shown collecting soil moisture data and asking questions about what soil moisture data might tell them about the environment. The resource includes a video and a written transcript, and is supported by the ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Physical geography, History and philosophy of science, Hydrology, Physical oceanography
 
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This video describes how to select a soil temperature study site, and demonstrates the procedure students use when taking soil temperature measurements in the field. The resource includes a video and a written transcript, and is supported by the Soil Temperature Protocol in the GLOBE Teacher Guide. This is one of five videos about soils in the 24-part instructional video series describing scientific ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: Geology, History and philosophy of science
 
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This video demonstrates students measuring the transparency of water, a measure of water quality, using a Secchi disk or turbidity tube. Field measurements of water temperature are also shown. The resource includes a video and a written transcript, and is supported by the Water Transparency and Temperature Protocols in the GLOBE Teacher's Guide. This is one of seven videos on hydrology in the 24-part ... Full description.
Grade level: Intermediate (3-5), Middle (6-8), High (9-12)
Resource type: Video
Subject: History and philosophy of science, Hydrology, Physical oceanography
 
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