The video is a procedural guide to sampling salinity measurements in water …
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 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 the Environment), a worldwide, hands-on, K-12 school-based science education program.
This laboratory manual is an introduction to a standard chemical lab course …
This laboratory manual is an introduction to a standard chemical lab course for Arizona Community Colleges CHEM 130. It covers basic protocols, glassware, and handling techniques. Students will be presented with full immersive experiences to enrich their understanding of basic chemistry.
Students learn about the separation techniques of sedimentation and centrifugation and investigate …
Students learn about the separation techniques of sedimentation and centrifugation and investigate whether blood is a homogeneous or a heterogeneous mixture. Working in groups as if they are biomedical researchers, they employ the scientific method and make observations about the known characteristics of urine, milk and blood. They probe further by analyzing research on the properties and fractionation modes of blood. As students learn about certain strange characteristics with the fractionation behavior of blood, they formulate hypotheses on the unique nature of blood. Using provided materials âolive oil, tomato juice and petroleum jellyâthey design an experiment and construct a blood model. They test their hypotheses by conducting experiments on the blood model, and then propose theories for the nature of blood as a mixtureâarriving at the theory of mixture dualism in bloodâthat blood is a complex mixture system. An activity-guiding handout and PowerPoint® presentation are provided for this student-directed, project-based activity.
In this video David explains what specific gravity means. He also shows …
In this video David explains what specific gravity means. He also shows how to calculate the value for specific gravity and use it to determine the percent of an object that will be submerged while floating.
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