Curated OER
The Cool Forms of Water
Students discover the different forms of water on Earth. For this states of water lesson, students read material on the different forms of water and how they are created. The students answer written questions on worksheets.
Curated OER
Sea and Ice Salinity
Students conduct an experiment. For this salinity lesson, students learn about sea ice, why it is important and how changing amounts can affect the sea. Students conduct an experiment to find out the effects of salinity on the...
Curated OER
Direct, Inverse and Joint Variation
Eleventh graders identify, create and solve word problems involving inverse variation. In this algebra lesson plan, 11th graders solve problems using direct, inverse and joint variation. They identify problems using these methods.
Curated OER
Salinity
Learners define and discuss salinity, conduct classroom experiment to determine salinity of water sample by using hydrometer, record predictions, and demonstrate understanding of how salinity influences object's ability to float in water.
Curated OER
Lesson tow
Students study the ocean and its characteristics. In this oceans lesson students complete a lab activity and are able to predict temperature of certain depths.
Curated OER
Investigating Convection Currents
Students examine how differences in the temperature and salinity of the water help create ocean currents. They perform an experiment which shows how temperature affects the circulation of ocean water.
Curated OER
Driving Currents
Students conduct a variety of investigations to see how water, heat, and salinity affect the flow of the world's ocean currents,as well as, explore many factors that affect the flow of the world's ocean currents. They also describe in...
Curated OER
Sea Ice
Students observe the freezing times and temperatures of water with varying levels of salinity. They determine how icebergs form, how they act, and what they may be made of. They discover that salinity level affects the time it takes...
Curated OER
Why is the Ocean Salty?
In this ocean salt worksheet, students read about the processes that have lead to the salt content in the ocean. Then students complete 5 short answer questions.
Curated OER
Layering of Water
Pupils examine what happens when different types of water meet. In groups, they participate in an activity in which they combine different percentages of salt, fresh and brackish water and record their observations. They let the...
Curated OER
Testing for Conductivity
Students test the conductivity of selected liquids and solids. They test the circuit by touching the two free ends of the wires together and add salt little by little recording the data after each addition. Finally, students predict...
Curated OER
Water Quality Monitoring
Learners comprehend the four parameters of water quality. They perform tests for salinity, dissolved oxygen, pH and clarity or turbidity. Students comprehend why scientists and environmental managers monitor water uality and aquatic...
American Chemical Society
Inquiry in Action: Changing the Density of a Liquid: Adding Salt
In this activity, students will see that a carrot slice sinks in fresh water and floats in saltwater. Considering the placement of the carrot slice in water and salt water, students will infer that the density of salt water must be...
Massachusetts Institute of Technology
Mit: Blossoms: Will an Ice Cube Melt Faster in Freshwater or Saltwater?
Engage students in the study of the ocean and saltwater with these activities. Students will see that saltwater has different physical properties than freshwater - mainly density. This instructional activity can serve as a springboard...
American Museum of Natural History
American Museum of Natural History: O Logy: Stuff to Do: Density of Salty Water
An experiment to test what happens when ocean water hits a freshwater estuary. Each step is demonstrated with photographs and the difference between salinity and density is explained.
Texas Instruments
Texas Instruments: Jason: How Dense Is Salt Water?
Disappearing Wetlands: Explore the relationship between mass, density, and salinity by measuring the mass and volume of four saltwater solutions of increasing strength.
Science Education Resource Center at Carleton College
Serc: Density Differences
Young scholars investigate differences in ocean water density, and record density data from salt, ice, and hot water samples in their notebooks. Students then simulate ocean water temperature levels in a simulation.
![University of California: Seawater Density & Salinity [Pdf] Handout](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "University of California: Seawater Density & Salinity [Pdf] Handout")
University of California
University of California: Seawater Density & Salinity [Pdf]
Describes the properties of seawater and the variations depending on its location, e.g., near a shoreline, in an estuary, or as sea ice. Discusses the instruments scientists use to measure the density of water and explains other...
SEDL
Oceans [Pdf]
This large PDF file integrates math, science, and language into several lessons about characteristics of the oceans. Topics include ocean currents, tides, density, marine life, and pollution.
Science Education Resource Center at Carleton College
Serc: Discovering Density Through Lava Lamps
Students first predict, then mix several liquids and then add salt to the mix, simulating a lava lamp.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Ocean Currents
Students map the patterns of the major ocean currents, and learn about the influences of wind, water temperature, landmasses, and water density on currents.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Ocean Currents Change Our Earth
Students learn about the factors that drive ocean currents by measuring the density of ocean water and tap water.
US Navy
Onr: Saltwater vs. Freshwater, Which Is Denser?
This site contains an experiment on how to find out which has more density -- freshwater or saltwater.
Utah STEM Foundation
Utah Stem Action Center: Floating on the Great Salt Lake
Through exploring the phenomenon that it is easier to float on salt water than on fresh water, students will develop a conceptual model for molecules and how the arrangement of molecules affects density.