The Chemistry of Makeup

In this video from DragonflyTV, join Jazi and Danielle as they experiment with different combinations of everyday ingredients in order to create and test batches of lip gloss.

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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.

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Cooking Cookies with Solar Power

In this video segment adapted from ZOOM, two solar cookers are tested against a control to see which can cook a "s'more" faster.

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Cosmic Origin Spectrograph

This video from NASA features the Cosmic Origin Spectrograph (COS), which allows scientists to use spectrographic analysis to assess the composition of intergalactic material.

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Counting Neutrons on the Moon

Find out how scientists are using a neutron detector onboard a satellite to try to find water on the Moon in this video adapted from NASA.

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Dark Energy

Dark energy makes up 70 percent of the universe. In this video from QUEST produced by KQED, meet one of the country's leading scientists who is trying to understand dark energy.

Defy Gravity! Balancing Balls on Air

In this video segment adapted from ZOOM, cast members use a hair dryer to balance a ball in a stream of air, seemingly defying gravity.

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Defy Gravity! Upside Down Ping Pong Ball

In this video segment, the ZOOM cast is challenged to keep a ping pong ball in a funnel while the funnel is held upside down, seemingly defying gravity.

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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.

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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.

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Density and Buoyancy: Mixing Hot and Cold Water

Watch warm water float on top of cold water in this video segment adapted from ZOOM.

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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.

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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.

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Designing a Puff Mobile

The air you exhale can power a puff mobile. Watch as the ZOOM cast races their air-powered designs to see which design features are the most successful.

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Designing Balloon Cars

Can the air in a balloon power a car? Watch students from Weston, Massachusetts, demonstrate their balloon car designs in this video adapted from ZOOM.

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Detecting Life on Other Planets

In this video from NOVA scienceNOW, learn how scientists detect potential signs of life on distant planets.

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Developing the Periodic Table

This video excerpt from NOVA: "Hunting the Elements" looks at how early chemists developed the periodic table of elements.

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Do Materials Get Tired? Creep

This video explains that materials will deform slowly or “creep” under the right conditions, when constant force is applied. “Strain” is illustrated with rubber bands and we learn that engineers can calculate creep strain as a function of time.

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Do Materials Get Tired? Fatigue

This video explains how the strength of a material can be measured in the laboratory and used to design structures, like bikes, airplanes, and even chairs. We see a controlled lab experiment that applies precise force to a paperclip until it breaks.

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Do Materials Get Tired? Intro

This video explains matter is made up of atoms that dictate the properties of materials. Mechanical engineers measure the stress a material can take until it breaks. Their ultimate goal is to make a material that will repair itself.

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