Museum of Science
Museum of Science: Water Density Experiment
A simple lab activity to demonstrate that ocean currents are influenced by changes in water density.
American Chemical Society
Inquiry in Action: Changing the Density of a Liquid: Heating and Cooling
In this activity, students will investigate whether the temperature of water affects its density. Students will place colored hot and cold water in a cup of room-temperature water to see that cold water sinks while hot water floats. Then...
Exploratorium
Exploratorium: Science Snacks: Klutz Proof Density Column
An activity to help you create a density column that contains layers of liquids that are separated by different densities.
Science Buddies
Science Buddies: It's Crowded in Here! A Study of Plant Population Density
Like humans, plants can be negatively affected by overcrowding. Unlike humans, plants cannot get up and move to a new environment or explore how to utilize new resources. This experiment will explore the effects of crowding (population...
TeachEngineering
Teach Engineering: Density Rainbow and the Great Viscosity Race
Students explore the densities and viscosities of fluids as they create a colorful 'rainbow' using household liquids. While letting the fluids in the rainbow settle, students conduct 'The Great Viscosity Race,' another short experiment...
PBS
Pbs, Secrets of the Ocean Realm: Mountain in the Sea
This experiment allows your students to study the effect of temperature on water motion and also to create their own density driven current.
Science Buddies
Science Buddies: You Nailed It! Hammering Force for Different Types of Wood
This Science Buddies project explains how to build a mechanism that will reproducibly swing a hammer so you can determine the amount of force needed to hammer a nail through various densities of wood. The Science Buddies project ideas...
Science Buddies
Science Buddies: Up, Up, and Away in Your Own Hot Air Balloon!
In this science fair project, students will make hot-air balloons using a toaster and dry-cleaning bags, and see how the size of the balloon affects its flight. The Science Buddies project ideas are set up consistently beginning with an...
Science Buddies
Science Buddies: Project Ideas: How Much Sugar Is Really in That Soda?
In this science fair project, use a precision hydrometer to measure the amount of sugar in soda. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and introduction, followed by a section on...
Science Buddies
Science Buddies: Buoyancy of Floating Cylinders
This project presents an interesting puzzle. A disk of wood will float face-up, that is, with its circular cross-section parallel to the surface of the water. A long log of wood, however, floats with the circular cross-section...
University of Chicago
Center for Astrophysical Research in Antarctica: Don't Be Too Flaky
After reading some facts about the properties of water, students conduct experiments to measure the relative densities of water, ice and snow and submit the results to the website.
TeachEngineering
Teach Engineering: Clay Boats
Each student uses a small quantity of modeling clay to make a boat that will float in a tub of water. The object is to build a boat that will hold as much weight as possible without sinking. In the process of designing and testing their...
Science Fun for Everyone
Science Fun: Water Fireworks
In this science experiment, you will learn about density while making water fireworks!
Other
Bigelow Laboratory for Ocean Sciences: Salinity and Deep Ocean Currents
For this activity, students will investigate how temperature and currents affect the salinity of ocean water, making predictions after studying ocean maps. It is recommended that teachers do the experiment themselves before presenting it...
Treehut
Suzy's World: How Come Some Liquids Don?t Mix?
This site from Suzy's World explores how and why certain liquids mix better than others. Content includes fun facts and a classroom experiment. This site also includes links to additional information on related subjects.
Energy4Me
Energy4me: Exploring Oil Seeps
How does oil seep naturally from beneath layers of rock to the surface of the ocean?
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