Activity
Museum of Science

Museum of Science: Water Density Experiment

For Students 9th - 10th
A simple lab activity to demonstrate that ocean currents are influenced by changes in water density.
Activity
American Chemical Society

Inquiry in Action: Changing the Density of a Liquid: Heating and Cooling

For Teachers 9th - 10th
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...
Activity
Exploratorium

Exploratorium: Science Snacks: Klutz Proof Density Column

For Students 9th - 10th
An activity to help you create a density column that contains layers of liquids that are separated by different densities.
Activity
Science Buddies

Science Buddies: It's Crowded in Here! A Study of Plant Population Density

For Students 3rd - 5th
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...
Activity
TeachEngineering

Teach Engineering: Density Rainbow and the Great Viscosity Race

For Teachers 6th - 9th
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...
Activity
PBS

Pbs, Secrets of the Ocean Realm: Mountain in the Sea

For Teachers 9th - 10th
This experiment allows your students to study the effect of temperature on water motion and also to create their own density driven current.
Activity
Science Buddies

Science Buddies: You Nailed It! Hammering Force for Different Types of Wood

For Students 6th - 8th
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...
Activity
Science Buddies

Science Buddies: Up, Up, and Away in Your Own Hot Air Balloon!

For Students 9th - 10th
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...
Activity
Science Buddies

Science Buddies: Project Ideas: How Much Sugar Is Really in That Soda?

For Students 9th - 10th
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...
Activity
Science Buddies

Science Buddies: Buoyancy of Floating Cylinders

For Students 6th - 8th
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...
Activity
University of Chicago

Center for Astrophysical Research in Antarctica: Don't Be Too Flaky

For Students 3rd - 8th
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.
Activity
TeachEngineering

Teach Engineering: Clay Boats

For Teachers 7th - 9th
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...
Activity
Science Fun for Everyone

Science Fun: Water Fireworks

For Students 3rd - 6th
In this science experiment, you will learn about density while making water fireworks!
Activity
Other

Bigelow Laboratory for Ocean Sciences: Salinity and Deep Ocean Currents

For Teachers 3rd - 8th
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...
Activity
Treehut

Suzy's World: How Come Some Liquids Don?t Mix?

For Students 2nd - 7th
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.
Lesson Plan
Energy4Me

Energy4me: Exploring Oil Seeps

For Students 9th - 10th
How does oil seep naturally from beneath layers of rock to the surface of the ocean?

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