American Chemical Society
Middle School Chemistry: Density Sink and Float for Solids
See how different solids can have different densities depending on their molecular make-up.
HotChalk
Hot Chalk: Lesson Plans Page: Sink or Float?
This lesson plan is designed to have young children explore the concept of sinking vs. floating by using the skills of prediction, observation and classification.
Alabama Learning Exchange
Alex: Teaching Measurement: Literature and Manipulatives
The tradebook, Who Sank the Boat? by Pamela Allen, is an excellent tool in teaching measurement. Students will engage in activities involving different types of measurement. In the story, five animal friends decide to take a boat ride....
PBS
Pbs Learning Media: Floating and Sinking: Hot Air Balloons
Why do hot air balloons float? This resource from the NOVA Web site offers a series of interactive activities that illustrates the physics of hot air balloons.
OpenStax
Open Stax: Physics: Archimedes' Principle
From a chapter on Fluid Statics in a Physics textbook. This section of the chapter provides a detailed discussion of Archimedes' principle, buoyant force, floating and sinking, and the role of density. Includes questions, problems and...
PBS
Pbs Teachers: Scientific American: Beneath the Sea: Blowing Ballast
Explore the use of ballast to manipulate buoyancy in submarines by building a model of a submersible using two-liter bottles and balloons. Describe the balance of forces that is responsible for the surfacing and diving of submersibles.
American Chemical Society
Inquiry in Action: Defining Density
Do heavy things always sink and light things always float? In this introductory demonstration and activity, students are introduced to the concept of density as they explore a rock and a wooden block in water.
PBS
Pbs Teachers:mysteries of the Deep: Leaky Seal
Investigate the mystery of the sinking of the Confederate submarine Hunley. Explore the mechanics of waterproofing a seal, and compare and contrast the effectiveness of a metal-to-metal seal versus one that uses a rubber gasket.
American Chemical Society
Inquiry in Action: Changing the Density of an Object: Adding Material
In this activity, students see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float. This high-volume but light-weight material increases...
American Chemical Society
Inquiry in Action: Compare the Density of an Object to the Density of Water
In this activity, students use tea light candle holders and a student-made balance to compare the weight of equal volumes of wax, water, and clay. Students will discover that since the wax weighs less than an equal volume of water, it is...
Mocomi & Anibrain Digital Technologies
Mocomi: Buoyancy
Ever wonder why/how things float? This concept is called buoyancy. Take this interactive journey to learn and understand how and why certain materials float and others sink to the ocean floor.
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