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# Browse results: Physical Science

RESULTS 41-60 OF 270

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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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9-12

Video

## 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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K-8

Video

## Defy Gravity! Centripetal Force

How can you keep a ball from falling out of a jar if the jar is upside down? Watch the ZOOM cast use centripetal force to meet this challenge.

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3-8

Video

## 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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3-8

Video

## 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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K-8

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.

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K-8

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.

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K-8

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.

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K-8

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.

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K-8

Video

## The Deployable Energy Absorber

Watch how engineers stage a crash to test a new helicopter safety design technology in this video from NASA.

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9-12

Video

## Designing a Paper Bridge

In this video segment adapted from ZOOM, cast members make a bridge from a single piece of paper. Will it be strong enough to hold a hundred pennies?

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3-8

Video

## 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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K-5

Video

## Designing a Roller Coaster

This video adapted from DESIGN SQUAD profiles Chris Gray, a mechanical engineer who uses his knowledge of energy transfer to design roller coasters.

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5-12

Video

## Designing a Roller Coaster

In this video segment adapted from ZOOM, the cast is challenged to design and test a roller coaster with loops, hills, and U-turns.

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3-5

Video

## 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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3-8

Video

## Designing Electric Circuits: Door Alarm

In this video segment adapted from ZOOM, cast members design and build door alarms using a variety of materials, including aluminum foil, batteries, and buzzers.

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3-8

Video

## Designing Electric Circuits: Steadiness Tester

In this video segment adapted from ZOOM, cast members discover that metal is a good conductor of electricity as they play the steadiness tester game.

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3-5

Video

## Designing Future Cities: Alternative Energy

In this video segment adapted from ZOOM, visit a class as they design a city of the future that will use solar, wind, and water power to fuel its economy.

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3-8

Video

## Designing the Citigroup Skyscraper

This video segment adapted from Thinking Big, Building Small shows how a structural engineer overcame the challenge of building New York's Citigroup skyscraper over a church.

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3-8

Video