Physics Aviary
Physics Aviary: Practice Problems: Percent Floating Challenge
Students must figure out how much of a ball will be under a fluid when it is in equilibrium with its environment.
University of California
University of California: Seawater Density & Salinity [Pdf]
Describes the properties of seawater and the variations depending on its location, e.g., near a shoreline, in an estuary, or as sea ice. Discusses the instruments scientists use to measure the density of water and explains other...
Science Struck
Science Struck: How to Find Volume With Water Displacement Method
Tells the story of how Archimedes discovered the Archimedes Principle and his water displacement method for determining the volume and density of an object. Provides an explanation and several examples of how it is done.
Walter Fendt
Walter Fendt: Buoyant Force in Liquids
An app that demonstrates the Law of Archimedes. This virtual experiment will show students that by changing the shape of the solid, the amount of liquid displaced will change.
Physics Aviary
Physics Aviary: Force Buoyancy Lab
This lab was designed to have students test the relationships that affect the force buoyancy. Not all things they change will be factors. They can change mass of bottle, volume of bottle, fluid type and planet.
Colorado State University
Little Shop of Physics: The Amazing Physics of Everyday Objects
Try out these experiments you can do with items you might already have around the house: "Two Ball Bounce," "Cartesian Diver," "Straw Flute," "Bernoulli Ball," and others. Two experiments, "Imploding Pop Can" and "Balloon in a Bottle,"...
CK-12 Foundation
Ck 12: Physical Science: Archimedes' Law
[Free Registration/Login may be required to access all resource tools.] Archimedes Law: displacement and buoyant force and why some objects float.
Science Education Resource Center at Carleton College
Serc: Investigating Buoyancy, Density, and Fluid Principles: Make Mini Submarine
In this lab, students will use the scientific method to design an experiment that explains how/why a submarine floats and sinks.
Alabama Learning Exchange
Alex: What's the Matter: A Sinker or Floater?
Learners will explore matter that sinks or floats when submerged in water and that matter is categorized as either a sinker or a floater. Students will work actively in small, cooperative learning groups as well as gather in a whole...
Alabama Learning Exchange
Alex: Who Sank the Boat?
This activity teaches the concept of measurement using grams and ounces through a student-created experiment. The students will get to test their own scientific predictions by constructing a boat and trying to sink it. This activity...
CK-12 Foundation
Ck 12: Physics: Pressure and Force: Fluids Study Guide
Review and study pressure and force in regards to fluids.
Science Buddies
Science Buddies: Build a Rubber Band Paddle Boat
Build your own bathtub or pool toy from simple craft materials in this fun activity. You will build a rubber-band-powered boat that can zip across the surface of the water after you wind up the rubber band.
Center for Innovation in Engineering and Science Education, Stevens Institute of Technology
Stevens Institute of Technology: Buoyancy Simulation
By choosing the mass, size, and time, students can experiment with whether the block floats or sinks in this simulation. Students have the option to display the forces and add a second block to the tank. Density is also shown to allow...
PBS
Pbs Learning Media: Buoyancy Brainteasers: Balloon in Car Puzzler
This interactive brainteaser from the NOVA: "Voyage of Doom" Web site challenges you to explain the behavior of a helium-filled balloon in a moving car.
PBS
Pbs Learning Media: Buoyancy Brainteasers: Boat in Pool Puzzler
This interactive brainteaser from the NOVA: "Voyage of Doom" Web site challenges you to figure out what happens to the water level when a rock is resting in a boat and when it is submerged in water.
Wolfram Research
Wolfram Science World: Buoyancy Force
This site provides a brief description and explanation of the buoyancy force. Content includes two formulas.
University of Oregon
The University of Oregon: Specific Gravity
Specific gravity and density are defined and explained.
PBS
Pbs Teachers: Submarine Race Experiment
Balance the force of gravity with the force of the expanding gasses created by mixing baking soda and vinegar. Create a soda bottle submarine that sinks to the bottom of the bathtub and then rises back to the surface.
Other
Look d.com: Gas Bladder
This site, which is from LookD.com, provides information about the bony fish gas bladder. The information that is presented at this site is medium in length and interesting, making it worth checking out.
PBS
Pbs Teachers: Ocean Activity Ideas
Explore ocean habitats, learn about the extreme weather of the ocean and examine environmental threats to the ocean. Conduct experiments on buoyancy and osmosis, and research sailing and ocean-based industry.
How Stuff Works
How Stuff Works: How Helium Balloons Work
This article explains how helium is able to keep balloons afloat in the air. Compares them to how hot air balloons work. Includes a video, and some activities to try for testing the principles being discussed.
Learn AP Physics
Learn Ap Physics: Physics B: Fluid Mechanics
A site dedicated to help students prepare for the AP Physics B test. This specific site reviews fluid mechanics including hydrostatic pressure, buoyancy, Archimedes' principle, Bernoulli's equation, and fluid flow continuity. Site...
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.
Science is Fun
Science Is Fun: The Cartesian Diver
A simple experiment in buoyancy where you discover how to make a packet of sauce or candy float or sink at will, and why you are able to do this.