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Subtopic: Solids, Liquids, Gases

Change grade range

Resource	Grade Level	Media Type
Buoyancy Basics This illustrated demonstration from the NOVA Web site explains the concepts of buoyancy and density by showing what happens when different kinds of wood blocks are dropped in water.	3-8	HTML Document
Buoyancy Brainteasers: Balloon-in-Car Puzzler This interactive brainteaser from the NOVA Web site challenges you to explain the behavior of a helium-filled balloon in a moving car.	3-8	HTML Interactive
Buoyancy Brainteasers: Boat-in-Pool Puzzler This interactive brainteaser from the NOVA 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.	3-8	HTML Interactive
Buoyancy Brainteasers: Buoyancy Question This interactive brainteaser from the NOVA Web site challenges you to figure out what causes an object to sink.	3-8	HTML Interactive
Columns: Experimenting with Balloons Watch the ZOOM cast find out how many balloons filled with air and then with water are required to support the weight of a cast member.	3-8	QuickTime Video
Comparing the Density of Liquids, Solids, and Gases Students compare the relative densities of different liquids and then solids, and also explore the density of air versus the density of water.	3-5	Lesson Plan
Density and Buoyancy: Experimenting with Club Soda In this video segment adapted from ZOOM, the cast discovers that gas-filled bubbles act like life jackets for raisins, making them buoyant.	K-8	QuickTime Video
Density and Buoyancy: Making Eggs Float Why does an egg float in salt water? Learn about density and buoyancy in this video segment adapted from ZOOM.	K-8	QuickTime Video
Density and Buoyancy: Mixing Hot and Cold Water Watch warm water float on top of cold water in this video segment adapted from ZOOM.	K-8	QuickTime Video
Density and Buoyancy: Pouring Air into Water This video segment adapted from ZOOM offers a clever demonstration of buoyancy by showing how to pour a cup of air into a cup filled with water.	K-8	QuickTime Video
Density and Buoyancy: Testing Liquids Will a grape float in oil? Will a metal nut sink in corn syrup? Watch as the ZOOM cast tests the buoyancy of a variety of liquids and objects.	K-8	QuickTime Video
Disappearing Milk A magician pours milk into a glass, but when he turns the glass upside down, nothing comes out. How does he do it? Discover the science behind the "magic" in this video adapted from the American Society of Mechanical Engineers.	4-12	Flash Interactive
Experimenting with a Glass Xylophone In this video segment adapted from ZOOM, the cast investigates how the pitch of sound changes when they strike a variety of glasses filled with different amounts and types of liquids.	3-8	QuickTime Video
How Structure Can Affect Properties Through Phase Changes Structure-Property Relationships	6-8	Lesson Plan
Mystery Mud: Exploring Changes in States of Matter Join a group of middle-school students on a visit to a laboratory at the Massachusetts Institute of Technology, where they experiment with "mystery mud" and learn about the relationships between magnetism, particle motion, and changes in the state of matter.	3-8	QuickTime Video
Snowflake Physics Explore the science behind snowflake formation by examining water molecule structure and other conditions that affect snowflake growth in this interactive activity adapted from SnowCrystals.com.	6-12	Flash Interactive
Sound and Solids: Listening Stick This video segment, adapted from ZOOM, explores how sound waves travel differently through air than through solids like a yardstick, a baseball bat, and a golf club.	K-8	QuickTime Video
Sound and Solids: Stereo Hangers This video segment, adapted from ZOOM, explores how sound waves travel differently through solids than through air, in this case, a metal clothes hanger.	K-8	QuickTime Video
Sound and Solids: Visualizing Vibrations In this video segment, adapted from ZOOM, a tuning fork's vibrations are made visible as ripples in a bowl of water.	K-8	QuickTime Video
Steam Machine Explore NOVA Online's interactive steam engine and discover how this machine can convert heat to mechanical energy.	3-12	Shockwave Interactive
Structure-Property Relationships Structure and property changes of water.	9-12	Lesson Plan
Surface Tension: Making Paper Clips Float In this video segment, the ZOOM cast relies on the surface tension of water to make paper clips float.	K-8	QuickTime Video
Testing Insulators: Ice Cube in a Box Watch the ZOOM cast discover which insulator -- newspaper or aluminum foil -- is better at keeping an ice cube frozen longer.	K-5	QuickTime Video
Using Salt to Melt Ice How can you pick up an ice cube with a string? Watch this video segment adapted from ZOOM to see how salt can help.	K-8	QuickTime Video
Virtual Glass Xylophone: Tunes and Spoons Play and record songs on this virtual glass xylophone. This interactive activity from ZOOM demonstrates how the pitch of a sound changes depending on the size of a glass and the amount of water in it.	3-8	Executable Interactive