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.
Science Education Resource Center at Carleton College
Serc: Investigating Floating and Sinking: Density
This investigation introduces the concepts of volume, mass, and density and how they interact. Students will make predictions of whether an object will float or sink after finding mass and volume of an object.
Better Lesson
Better Lesson: Floating and Sinking Sorting in Science
Students sort objects according to whether they sink or float.
Utah Education Network
Uen: Floating and Sinking Potatoes
After the teacher puts pieces of potatoes in water and salt water, the students predict what is going to happen and try to name what makes this happen.
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...
Science Education Resource Center at Carleton College
Serc: Mn Step: Sink or Float: All Liquids Do Not Have the Same Density
An experiment in density. After a review of floating and sinking of different materials, students test four bottles, all holding four ounces of water, to see if they will float or sink. They each contain a different density of sugar...
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.
Science Education Resource Center at Carleton College
Serc: Mn Step: Solid and Liquid Density Investigation
For this activity, students investigate whether objects and liquids float or sink when placed in water. As they proceed, they will develop an understanding of what density is. Student handouts are provided.
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 and Mathematics Initiative for Learning Enhancement (SMILE)
Smile: Density in Relation to Float and Sink
Students find the densities of objects based on sinking or floating in this activity that demonstrates Archimedes Principle.
Alabama Learning Exchange
Alex: Float or Sink?
Students will define density and use the density formula to determine the density, volume, and mass of various items using the correct units for each measurement.
TeachEngineering
Teach Engineering: Floating and Falling Flows
Students discover fluid dynamics related to buoyancy through experimentation and optional photography. Using one set of fluids, they make light fluids rise through denser fluids. Using another set, they make dense fluids sink through a...
Texas Education Agency
Texas Gateway: Ap Physics: Fluid Statics: Archimedes' Principle
By the end of this section, you will be able to define buoyant force, state Archimedes' principle, understand why objects float or sink, and understand the relationship between density and Archimedes' principle.
![The Engineering Place: Balloon Flinking [Pdf] Lesson Plan](https://content.lessonplanet.com/knovation/original/172615-2de503a48a3b9f1faaa61527a0b2e7e4.jpg?1661554798 "The Engineering Place: Balloon Flinking [Pdf] Lesson Plan")
Google
The Engineering Place: Balloon Flinking [Pdf]
A lesson and activity sheet on buoyancy. Students add weight to a helium-filled balloon to keep it suspended so that it won't float or sink, but instead will 'flink.'
Science Buddies
Science Buddies: How Much Weight Can Your Boat Float?
Have you ever wondered how a ship made of steel can float? In this project you'll investigate how much weight boat hulls of various shapes and sizes can support without sinking.
Museum of Science
Museum of Science and Industry: Online Science: Design a Submarine
Become an engineer, and design a submarine that moves in the water like a real submarine. Try making it sink, float, and hover in the water.
Science Education Resource Center at Carleton College
Serc: Bowling Balls: Will They Sink or Will They Float?
Students will investigate what determines whether a material will sink or float. They will be given a bowling ball and have to make measurements and conclusions on whether their bowling ball will float, hover, or sink when placed in an...
Science Education Resource Center at Carleton College
Serc: Investigating Density in Solutions: How Can You Make an Egg Float?
For this activity, students will learn about density by determining how to make an egg float in water. By the end of the lesson, students will understand that density and weight are different and that density matters in floatation. They...
American Chemical Society
Middle School Chemistry: Density: Sink and Float for Liquids
Students determine whether a liquid will sink or float in water by comparing its density to the density of water.
Utah Education Network
Uen: Sink or Float
Predict and test everyday objects as to whether they sink or float.
American Chemical Society
Middle School Chemistry: Density: Sink and Float for Solids
Young scholars determine whether an object will sink or float by comparing its density to the density of water.
TeachEngineering
Teach Engineering: What Floats Your Boat?
Students use modeling clay, a material that is denser than water and thus ordinarily sinks in water, to discover the principle of buoyancy. They begin by designing and building boats out of clay that will float in water, and then refine...
TeachEngineering
Teach Engineering: Floaters and Sinkers
Through this curricular unit, students are introduced to the important concept of density. The focus is on the more easily understood densities of solids, but students may also explore the densities of liquids and gases. Students devise...
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