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Electrolysis of Salt Water
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This is a hands-on lab activity about the chemical composition and conductivity of water. Working in groups, learners will: conduct an experiment involving the process of electrolysis, prepare an experiment to better understand the process of ion exchange, discuss and research the "softness" and "hardness" of water, and use the periodic table to identify elements and learn their characteristics. Background information, a glossary and more is included. Materials needed for each student group include a 9-volt battery, two electrodes (e.g. copper strips, or two #2 pencils sharpened at both ends), electrical wire and glass beakers or ceramic saucers. This activity is part of the Aquarius Hands-on Laboratory Activities.

Subject:
Chemistry
Physics
Science
Material Type:
Activity/Lab
Provider:
NASA
Provider Set:
NASA Wavelength
Date Added:
10/05/2018
Fresh or Salty?
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Educational Use
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Between 70 and 75% of the Earth's surface is covered with water and there exists still more water in the atmosphere and underground in aquifers. In this lesson, students learn about water bodies on the planet Earth and their various uses and qualities. They will learn about several ways that engineers are working to maintain and conserve water sources. They will also think about their role in water conservation.

Subject:
Science
Material Type:
Activity/Lab
Lesson
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Janet Yowell
Malinda Schaefer Zarske
Sara Born
Date Added:
09/18/2014
One World Ocean
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Educational Use
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In this activity, students learn about ocean currents and the difference between salt and fresh water. They use colored ice cubes to see how cold and warm water mix and how this mixing causes currents. Also, students learn how surface currents occur due to wind streams. Lastly, they learn how fresh water floats on top of salt water, the difference between water in the ocean and fresh water throughout the planet, and how engineers are involved in the design of ocean water systems for human use.

Subject:
Environmental Science
Science
Material Type:
Activity/Lab
Provider:
TeachEngineering
Provider Set:
TeachEngineering
Author:
Janet Yowell
Malinda Schaefer Zarske
Sara Born
Date Added:
10/14/2015
Open Access Assets for Agriculture Production (Field Crop) B10, B20, B30
Conditional Remix & Share Permitted
CC BY-NC
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The following resource contains the external assets (or resources) to accompany the Sask DLC Field Crop Production B10 / B20 / B30 courses. Please note that this is not the content of the course, but the external assets used to support and deliver it. 

Subject:
Agriculture Studies
Practical & Applied Arts
Material Type:
Activity/Lab
Lesson
Open Access Asset
Unit of Study
Author:
Sask DLC
Date Added:
09/26/2023
Visit to An Ocean Planet: Salinity and Deep Ocean Currents
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This resource uses text, images, maps and a laboratory exercise to explain how differences in the temperature and salinity of ocean water cause the formation of deep-ocean currents. It is part of the Jet Propulsion Laboratory's "Ocean Surface Topography from Space" website. This material is also available on the "Visit to An Ocean Planet" CD-ROM.

Subject:
Chemistry
Science
Material Type:
Activity/Lab
Provider:
NASA
Author:
James Kolb
Date Added:
10/05/2018
Wind-Driven Ocean Currents
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In this activity, students create a model ocean over which "wind" will be blown, and observe the relationship between the wind and the resulting ocean surface currents. The activity reinforces the concept that surface currents in the ocean are mostly caused by wind. A materials list and instructions are provided, and links to a glossary are embedded in the text.

Subject:
Physical Science
Science
Material Type:
Activity/Lab
Provider:
NASA
Author:
Margaret Srinivasan
Date Added:
10/05/2018