Curated OER
MEASURING THE DENSITY OF WATER
Students perform an experiment to measure the density of tap water vs. salt water.
Curated OER
Rainfall and Water Table
Through inquiry, experimentation, and observation, young scientists see how an increase in rainfall under climate change can affect the water table and soil salinity underground. Young scientists build models that represent the...
Curated OER
Salt Marsh in a Pan
Students create a model of a salt marsh to discover the impact of pollution and human activities on water-based habitats including bays and the ocean. They recognize the relationship between natural and developed areas. Students impact...
Curated OER
Boiling and Freezing Points of Water
Challenge your sixth graders with this instructional activity about the freezing and boiling points of water. In these activities learners graph temperature data, read and analyze information, and identify the freezing and boiling points...
Polar Trec
Is There Salt in a Glacier?
What can conductivity tell us about a glacier? Groups analyze glacial melt to determine salt content through an analysis of the pH and conductivity measurements of two samples. Groups then determine the source of the salts.
NOAA
Please Pass the Salt
Salinity is the focus of two experimenters that work to answer the question, How does salt change the physical properties of water? Super scientists compare the freezing rate of salt and fresh water, combine the two waters to observe how...
Curated OER
Properties of Salt
Young scholars see how the properties of salt affect the color of flame, the flow of electricity, and the freezing temperature of water. They identify salt and sugar crystals under a microscope and discuss various practical uses of salt.
Curated OER
Properties of Salt
Students discuss certain properties of salt and how it is used every day as well as harmful uses. They experiment with salt to see it conduct electricity, form crystals and water freezing temperature. They complete a worksheet to record...
Curated OER
Sea Water Freeze
Students observe how salinity affects the time it takes water to freeze. They participate in an experiment to determine that ice is essentially salt-free whether formed from fresh or salt water
Curated OER
Liquid Rainbow
Students develop their own techniques for drawing a small sample of solutions into a straw. They hypothesize ways to increase the density of water, and discuss how salt-free rainwater tends to float on top of salty seawater.
Curated OER
Point- vs. Non-point Pollution
Students differentiate between point and non-point pollution and determine how the different types of pollution are harmful to aquatic ecosystems. They complete a series of tests on a sample of "polluted" water and a sample of "pure" water.
Curated OER
Salty Solutions
Students measure salt content in water. They determine salt content of four samples using a hydrometer.
Curated OER
Properties of Fresh and Sea Water
Learners work with three stations to demonstrate the properties of water. They explore water's boiling point, freezing point, and its ability to store heat.
Curated OER
One World Ocean
Students compare and contrast the properties of salt water in the oceans/seas and freshwater elsewhere on the planet. They also analyze mixing caused by currents in the ocean, including the effects of warm and cold water as well as with...
Curated OER
The Preparation of Teraamminecopper(II) Sulphate-1-water
In this complex salt worksheet, high schoolers create teraamminecopper(II)sulphate-1-water using copper(II)sulphate, concentrated ammonia and ethanol. Students determine the formula mass for their product, the theoretical yield of the...
Curated OER
Evaporation in the Water Cycle
Students study the stages of the water cycle and evaporation. In this water cycle lesson, students read Water Cycles and color a diagram of the water cycle. Students review related terms and sing a song about the Water Cycle. Students...
Curated OER
Condensation and the Water Cycle
Students explore the natural distallation process that occurs in the water cycle. They use plastic cups and cotton swabs to observe the condensation process that is evident in the water cycle.
Curated OER
Water Filtering
Learners investigate how polluted water is filtered so people can use this recycled resource. They conduct an experiment in which they put "polluted" water through a filtering system. They investigate what happens at a water treatment...
Sea World
Arctic Animals
Discover the coldest animals in the world with a lesson about the Arctic habitat. Kids use a glossary and information sheet about animals found in the Arctic Circle to complete several activities, including tracking the lemming...
Curated OER
Sand and Water
Students follow this recipe for fun clay creations. In this early childhood art and science lesson, students develop creative-thinking skills, fine-motor skills, and sensory awareness while they make, mold, and decorate salt dough.
Curated OER
Ocean Water
In this ocean water worksheet, students use 6 given terms related to ocean water, early Earth and ocean components to complete the sentences. They also answer 4 questions about seawater, the effects of volcanoes on oceans and ocean life.
Curated OER
Ocean Water
Given data about the composition of ocean water, students complete 5 different questions using a provded table that relate to the ocean water (with elements Chloride, Sodium, Sulfate, and Magnesium). Some questions require calculation,...
NOAA
Ocean Layers I
How is it possible for ocean water to have layers? The sixth installment of a 23-part NOAA Enrichment in Marine sciences and Oceanography (NEMO) program investigates factors that cause different water densities to occur. Experiments...
Institute for Systems Biology
Introduction to Saline Environments & Microbial Halophiles
If you do not mind wading through unrelated headings (This is not for a physics or STEM course, as it states.) and content (The lesson opens with an article about neurology, not halophiles.), then you will find a valuable resource on...