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Beloit College: K 12 Geology
This is a good source of basic information about density currents in water. It includes simple activities you can do to demonstrate these currents.
Science Education Resource Center at Carleton College
Serc: Mn Step: Sinking and Floating Water
An experiment in density where colored water, both hot and cold, are poured into containers of water at room temperature. Students will observe that the warm water rises and the cold water sinks due to their different densities.
Science Education Resource Center at Carleton College
Serc: Mn Step: Sinking Water: Glaciers, Ocean Currents and Weather Patterns
A lesson where students learn how warm water is less dense than cold water, and what this means for global climate change as ice from the polar regions melts. Students will do experiments in buoyancy and water density when hot or cold,...
Science is Fun
Science Fun: Layered Liquids
This experiment allows you to dramatically demonstrate the different densities of five different common household liquids.
![Cosi Columbus: Buoyant Bubble [Pdf] Activity](https://static.lp.lexp.cloud/images/attachment_defaults/resource/large/FPO-knovation.png "Cosi Columbus: Buoyant Bubble [Pdf] Activity")
Center of Science and Industry
Cosi Columbus: Buoyant Bubble [Pdf]
Learn about density in this hands-on science experiment. Includes full list of materials, procedures, and scientific explanation of what makes an object float or sink. [PDF]
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 is Fun
Fun Science: Sinking and Floating Soda Cans
Why do some pop cans float in water while others don't? This easy experiment is a great example of the principle of density.
Science is Fun
Science Is Fun: Bowling Balls Float or Sink?
In this experiment, you test whether two different bowling balls will float or sink, then determine the density of each of the balls to see if they are less than that of water.
Illustrative Mathematics
Illustrative Mathematics: G Mg Archimedes and the King's Crown
The King of Syracuse reportedly requested Archimedes' advice for determining if a crown was made with the appropriate mixture of gold and silver. The problem asks learners to find the amount of water displaced in Archimedes' experiment...
Other
Science Alive: Repeating Experiments
For this lab activity, students are required to write a procedure to be followed in a simple lab process and record the results they get from following that procedure. They then exchange procedures with another lab group, which will have...
Science Fun for Everyone
Science Fun: Rainbow in a Glass
Use skittles to form a rainbow with this hands-on experiment. Links to video of the experiment.
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...
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.
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...
TeachEngineering
Teach Engineering: Anchors Away
In this activity, the students will discover the relationship between an object's mass and the amount of space it takes up (its volume). The students will learn about the concept of displacement and how an object can float if it...
Other
Steve Spangler Science: Denver's Brown Cloud
Learn how fluids move through our atmosphere and water. This experiment explains atmospheric convection currents (thunderstorms), the Gulf Stream, and temperature inversion. A video is included.
TeachEngineering
Teach Engineering: Eureka! Or Buoyancy and Archimedes' Principle
Students explore material properties in hands-on and visually evident ways via the Archimedes' principle. First, they design and conduct an experiment to calculate densities of various materials and present their findings to the class....
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: Project Ideas: What Makes Foams Stand Up Straight
In this food science fair project, students will determine which foods make good edible foams, with high volume and longevity. The Science Buddies project ideas are set up consistently beginning with an abstract, objective, and...
University of Oregon
Welcome to the Pressure Chamber
This site has an online experiment for testing the ideal gas law.
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.
Michigan Reach Out
Reach Out Michigan: Are All Liquids the Same
This experiment demonstrates the density of selected liquids.
Science is Fun
Science Is Fun: Dancing Raisins
An experiment in buoyancy which involves making raisins float by using carbonated soda pop. Students then try the same test with other materials. Instructions for making one's own carbonated liquid are also provided.
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