Curated OER
Investigating the Effect of Salinity on the Density and Stability of Water
Water with varying amounts of dissolved salt are dyed and then used to compare densities. The objective is to discover the effect of salinity, and therefore density, on ocean water on the stability of the ocean. Many branches of science...
CK-12 Foundation
Mineral Formation: Evaporating Lake
Get crazy for crystals! Junior geologists learn the secrets of crystal formation through lecture, reading, and examples. Other topics include common ionic compounds found in fresh and salt water, the effects of location on forming...
Curated OER
What Floats Your Boat?
This open-ended boat building exercise is meant to be part of a three-lesson series on ships. Links to the other two lessons are included. This particular part is mostly a group lab activity in which they build a boat, find its load line...
Curated OER
Microscale Chloride Determination in Salt Water
Young scholars determine the concentration of chloride ions in seawater. In this determination of chloride ions lesson plan, students perform a titration of sea water with silver nitrate and an indicator to determine the chloride ion...
Maryland Department of Natural Resources
Eyes on Dissolved Oxygen
Learn about the factors that affect the way oxygen dissolves in salt water with a chemistry lab. After studying the molecular structure of water, young scientists figure out how aeration, temperature, and organic waste affect dissolved...
Curated OER
Ocean Exploration: Dentists of the Sea!
Students watch videos about unusual fish behavior and write to marine scientists about the proper care of fish. In this fish lesson plan, students watch the videos on how to properly transfer fish to saltwater, and they do so in an...
Curated OER
Floating Pencil
Students discover how salt water makes a pencil float better than freshwater by measuring and comparing the lengths of the portion of the pencil that floats above the water surface. They then determine if an unknown water sample is...
Curated OER
The Floating Golf Ball
Students explore density by floating golf balls. They explore having their golf balls float halfway in a container of water and discuss density and its realtionship to where the golf balls are floating. After adding food coloring, they...
Curated OER
Sunken Millions
This PowerPoint provides a game show format with multiple choice questions about fresh and salt water. Topics include sources of water, water geography, uses of water, and the water cycle.
Curated OER
Boat Safety and Water Sports - Lesson 4 - Dangerous Sea Creatures
Lesson 4 is part of a 22 lesson unit on boat safety and water sports. This lesson is about dangerous sea creatures, mainly in the ocean. There is a link to find pictures of the creatures discussed. It is suggested to click on the...
Curated OER
Biocomplexity Lab Activity: Creating Salt Water
The lesson seeks to intorduce to students the properties of salt water and how to create salt water. Teacher gives backgound information about salt water to students. From that point, students dscuss what elements are in salt water....
Curated OER
Chillin' Out with Freezing Point Depression
Students examine the freezing point depression of salt water by making ice cream. Lab activity begins with students layering a bowl with ice and salt around an empty cup before adding a mystery solution to the cup. They take the...
Curated OER
Shadow Know-How: Saltwater Fish
In this fill in the blank worksheet, learners identify the names of thirteen common saltwater fishes by analyzing their outlines in shadow pictures.
Curated OER
Comparing Fresh and Salt Water: Venn Diagram
In this Venn diagram worksheet, students compare and contrast fresh water and salt water. Worksheet includes a link to additional activities.
Curated OER
Salt Water Revival
Students produce a high tide. In this Marine Biology lesson, students visit a tide pool to investigate the creatures response to changes in the tide. Students discuss the results of their experimentation.
Curated OER
Frozen Water Before? I'm Sure You Have; But I Bed You've Never Frozen Salt Water! Water!!
Students examine what happens to salt water when it freezes. In groups, they measure density and salt concentrations in different samples of water and record its freezing time. They discuss the relationship between water density and...
Curated OER
Aquaculture
There are many important facts about raising water animals commercially in this PowerPoint. Fish, alligators, crayfish and bullfrogs are considered, and the special conditions that each require is also included.
American Chemical Society
Changing the Density of a Liquid - Adding Salt
Fourth in a set of several little lessons on density, this one compares the density of fresh and salt water. First by demonstration, and then by a hands-on activity, learners find that adding salt increases the density, as is evidenced...
Curated OER
MEASURING THE DENSITY OF WATER
Students perform an experiment to measure the density of tap water vs. salt water.
Teach Engineering
Solar Power
Elementary schoolers discover how engineers use solar energy to heat buildings. They take a close look at some of the materials used: sand, salt, water, and shredded paper and evaluate the efficiency of each material. An incredible...
Curated OER
Salinity Lab
In this salinity worksheet, students simulate conditions of salt and fresh water mixing and observe the various densities of these solutions based on their salinity.
Curated OER
The Caspian Sea
In this comprehension and geography activity, students read an article about the Caspian Sea, identifying where it is located and what countries surround it. Then they describe three parts of the sea, what are tributaries, and how many...
Curated OER
North American Biomes
In this Science activity, students color a biome map of North America. Students color the map by solving the clues listed on a separate sheet of paper.
Curated OER
The Floating Egg Problem
This is the grown-up version of the classic "float an egg in salt water" experience, plus an experiment in soap making. High schoolers explore density, but more importantly, practice accuracy, precision, and the use of significant...
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