Curated OER
The Buoyancy Factor
Pupils examine why some objects float in water while others sink and the ability of something to float does not depend entirely on its weight. Archimedes' principle is introduced and buoyant force is discussed. Practice calculations and...
Curated OER
Animal Life Histories Derived From Morphology
Students learn the mechanisms of natural selection by deducing information from the physical appearance of the animal.
Curated OER
I Have the Solution!
Young scholars explain how to make solutions with specific concentration. In this chemistry lesson, students differentiate acids and bases. They calculate molarity of solutions.
PBS
Pbs Teachers: Saltwater Tester
Explore circuits and the flow of electricity. Create a saltwater tester using a battery and electrical buzzer.
Hunkins Experiments
Hunkin's Experiments: How to Make Oxygen From a Battery
Hunkin's Experiments is a group of simple cartoon illustrations of scientific principles. Some would work well in the classroom, but others have little value beyond entertaining students. All of the projects are easy to do. This one...
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.
Science Buddies
Science Buddies: How Salty Is the Sea?
Have you ever been swimming at the beach and gotten some water in your mouth by mistake? Then you know that the ocean is very salty. Bodies of freshwater also contain some salt, but much less compared to oceans. In this experiment you...
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.
Exploratorium
Exploratorium: Science Snacks: Aluminum Air Battery
Create a battery that is strong enough to power a light or a small motor in this activity. Activity uses simple materials such as: aluminum foil, salt water, and charcoal to make this battery.
Texas Instruments
Texas Instruments: Finding the % Salt in Seawater
In this experiment, students are asked to collect data in order to prepare a calibration curve showing the relationship between the percentage of salt and the mass of salt water. Using this graph, students will be able to determine the...
Scholastic
Scholastic Instructor: Seashore Science
Come and learn with this incredible seashore science resource. The content includes fun facts, experiments, reproducible activities, resources and more.
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.
PBS
Pbs Teachers: Ocean Activity Ideas
Explore ocean habitats, learn about the extreme weather of the ocean and examine environmental threats to the ocean. Conduct experiments on buoyancy and osmosis, and research sailing and ocean-based industry.
Bill Nye
Bill Nye: Eggs Speriment
Try this at-home science experiment to learn if salt affects the way things float.
Climate Literacy
Clean: Effects of Increased Co2 in the Air on Seawater and Distilled Water
Students perform an experiment comparing the impacts of CO2 on salt water and on fresh water. In a short demonstration, students examine how distilled water and seawater are affected differently by increasing carbon dioxide in the air.