American Chemical Society
Middle School Chemistry: Density: Sink and Float for Solids
Students determine whether an object will sink or float by comparing its density to the density of water.
Science Buddies
Science Buddies: Levitating Magnets: Floating Isn't Just for Magicians
If you ever seen a magician float an object in the air, you might think that levitation is just a magic trick, but the truth is you can use an invisible physical force to levitate a magnet. Try this simple, week-long science project to...
Utah Education Network
Uen: Sink or Float
Predict and test everyday objects as to whether they sink or float.
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...
Utah Education Network
Uen: Physically Change Shape of Object
Science fair project tests whether students can construct a shape out of clay that will float.
Massachusetts Institute of Technology
Mit: Open Course Ware: Buoyancy
Students explore buoyancy. Some topics examined in the activities are buoyant force, stability of floating objects, and Archimedes' principle. The resource consists of video clips, lecture notes, practice problems, and exam questions....
Better Lesson
Better Lesson: Floating and Sinking Sorting in Science
Students sort objects according to whether they sink or float.
Science Education Resource Center at Carleton College
Serc: Density of Solid Objects
In this science inquiry, students investigate whether volume or density of objects determine the floating or sinking in water. Using a rock and a block of wood teachers engage students in the discussion of density, mass and volume.
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. Learners will make predictions of whether an object will float or sink after finding mass and volume of an object.
PBS
Pbs Learning Media: Sesame Street: Sink or Float Educator Guide
This is an educator's guide for a unit on things that sink or float. It includes lesson plans, experiments, and activities. Learners apply the scientific method as they investigate whether objects sink or float.
Science Education Resource Center at Carleton College
Serc: Mn Step: Sink or Float? Inquiry Investigation
For this activity, students make predictions about whether different objects float or sink, then test them. They are asked to record their observations and results for each, and compare their results to others'.
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.
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...
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.
Other
National Engineers Week Foundation: Flinker
Students investigate with common objects to see if they can make something that neither floats nor sinks, but rather "flinks" in the middle.
PBS
Pbs Learning Media: Buoyancy Brainteasers: Buoyancy Question
This interactive brainteaser from the NOVA: "Voyage of Doom" Web site challenges you to figure out what causes an object to sink.
TeachEngineering
Teach Engineering: Buoyant Boats
Students learn about displacement, density and buoyancy then apply their knowledge to build a floating object.
Alabama Learning Exchange
Alex: What's the Matter: A Sinker or Floater?
Students 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...
National Association of Geoscience Teachers
Nagt: Density Mystery Canisters
Students experiment with items that sink or float, and learn that water's density is equal to one, and objects/solutions with a density greater than one will sink, and those with a density less than one will float.
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.
TeachEngineering
Teach Engineering: Floaters and Sinkers
This instructional activity introduces students to the important concept of density. The focus is on the more easily understood densities of solids, but students can also explore the densities of liquids and gases. Students devise...
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...
TED Talks
Ted: Ted Ed: What Are Those Floaty Things in Your Eye?
Sometimes, against a uniform, bright background such as a clear sky or a blank computer screen, you might see things floating across your field of vision. What are these moving objects, and how are you seeing them? This video explains...
Science Education Resource Center at Carleton College
Serc: Junk in Space
Did you know that there is millions of man-made "space junk" floating in orbit? This game will have you collecting space junk but you have to be careful not collect any objects that should be in space!
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