Cornell University
Buoyancy
Swimmers know to float by turning their bodies horizontally rather than vertically, but why does that make a difference? In an interesting lesson, scholars explore buoyancy and the properties of air and water. They test cups to see which...
Curated OER
Floating Fishes: How do Fishes Control Buoyancy?
Playing with balloons, water, oil, and bottles help put this lesson over the top! Participants use air-filled balloons in water tanks to experience gas compression. They also use oil-filled bottles to experiment with buoyancy. Included...
Curated OER
Buoyancy: Integrating Science and Literature
Integrate science and literature by using the scientific method to test the veracity of the floating peach described in Roald Dahl's James and the Giant Peach. Clips from a Bill Nye: The Science Guy episode about buoyancy frontload...
American Chemical Society
Comparing the Density of an Object to the Density of Water
Investigators construct a makeshift balance and compare equal volumes of wax and water. They do the same for clay and water. Then they discover whether the wax and clay will float or sink in water. Ultimately this is a comparison of...
Florida International University
Simulating Microgravity with Buoyancy
How do astronauts know how to live and work in a weightless environment? It doesn't come naturally! Junior physicists conduct experiments to examine the link between buoyancy and microgravity. Each activity illustrates a different aspect...
Curated OER
Exploring Buoyancy
Students use materials found at a resource table to design simple devices that will house instruments to take water samples from a tub of water. They design 3 instruments, each varying in density so that one will float, one will hover...
National Sailing Hall of Fame
How a Sailboat Works: Hull Speed and Buoyancy
How can you determine the maximum speed of a sailboat? A sailing presentation included with a straightforward lesson plan prompts learners to calculate the maximum speed of a sailboat with a displacement hull. The presentation continues...
Curated OER
Buoyancy: Who Sank the Boat?
Students examine whether objects will sink or float. In this buoyancy lesson students bring in objects and experiment to see if they sink or float.
Curated OER
Investigating the Effect of Salinity on the Density and Stability of Water
Water with varying amounts of dissolved salt are dyed and then used to compare densities. The objective is to discover the effect of salinity, and therefore density, on ocean water on the stability of the ocean. Many branches of science...
American Physiological Society
How Does the Density of a Liquid Affect the Buoyancy of an Object?
Here's a lesson plan that will really float your boat! Introduce physical science scholars to the relationship between buoyancy and density through an assortment of individual and collaborative exercises. Lab groups work together to...
Florida International University
Designing an Autonomous Underwater Vehicle (AUV): Concepts in Lift, Drag, Thrust, Energy, Power, Mass, and Buoyancy
Engineer an autonomous underwater vehicle (AUV) to study concepts of physics. Using household materials, collaborative groups design and build an AUV and then test Newton's Laws of Motion as they apply them in underwater environments...
California Academy of Science
Buoyancy Bulls-Eye
Why does a seastar sink, but a jellyfish float? Through a fun investigation, learners examine the concept of buoyancy using simple household items. The challenge: create neutral buoyancy for an action figure in water. With ample teacher...
Curated OER
The Cork Floats Where?
Have your ever noticed that a cork floats in the middle of a glass that's filled to the brim with water, but will always float along the inside edge of a glass that's only half full with water? It's true! Young scientists ponder this...
Curated OER
Oceans of Fun
Here is a great hands-on activity that should lead to a greater understanding of salt water, why the ocean is salty, and how ocean waves are formed. This terrific, old-school lesson has clearly described activities, and all of the...
Curated OER
Come On Down!
Begin with an introduction to famous deep-sea submersibles. Learners work in groups to gather information on different vessels and then share with the class. Each group then uses water displacement to help calculate the density of...
Curated OER
Sink or Float?
Have your class explore density and buoyancy using this resource. Learners read the book Who Sank the Boat, and use several items, such as rubber balls, bottle caps, wood, and other household items to conduct an experiment. Using a tub...
Curated OER
Will It Sink Or Float?
Learners develop their understanding of buoyancy and density related to sinking and floating. They investigate which objects sink and float through experimentation. They determine that different substances sink or float depending on...
Curated OER
Saltwater: Nifty Aqueous Colorful Layers
A classic investigation on the density of liquids is explained for you in this lesson plan. Te begin, you prepare water samples of different salinities and then add different food coloring to keep them separated and easily identified....
Curated OER
Ships 2: What Floats Your Boat?
Students design, build, and test the specifications (water displacement and load line) for a model boat. The instructional activity focuses especially on integrating design principles with inquiry-based experimental skills.
Curated OER
Blowing Ballast
Oceanographers participate in a memorable hands on experience about buoyancy. They build a model of a submersible using a plastic bottle and a balloon. Afterward, they answer assessment questions. An answer key and some terrific...
Curated OER
The Stone Boat Mystery
Students design and execute a lab through which they study the distinctions between density, buoyancy, and volume.
Teach Engineering
Floaters and Sinkers
Whatever floats your boat. Young engineers learn about density by measuring the masses and volumes of boxes filled with different materials. Using their knowledge of densities, they hypothesize whether objects with given densities will...
Curated OER
Sink or Float
Using a variety of objects, learners conduct buoyancy experiments. They make predictions on which object will sink or float and test their predictions. They use a graphic organizer to record their findings.
Center for Precollegiate Education and Training
Buoyancy Boats
What did the sea say to the boat? Nothing, it just waved. An inquiry-based lesson starts with a simple concept on the Archimedes Principle and challenges pupils to make something out of clay that floats. Then, they design an object out...