Physical Science

Traveling Through Time

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Is it possible to travel through time? Einstein’s theory of relativity states that the stronger the gravitational pull on an object, the more time slows for that object. Scientists predict that if someone were to travel to a place with a lot of gravity, like near a black hole, time would pass more slowly for that person. In this video excerpt from NOVA’s "The Fabric of the Cosmos: The Illusion of Time," host and theoretical physicist Brian Greene takes a journey through space—and time—to illustrate what time travel might really be like.

Scale City: Greetings from Sky-Vue Drive-In

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Greetings from Sky-Vue Drive-In takes students on a tour through the history of drive-in theaters and a visit to one that's still open and thriving in Winchester, Kentucky. Looking at shadows through the drive-in movie projector introduces the relationship of a shadow's size to its distance from the light source.

Pitch: Super Sounding Drums

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The construction of a drum -- the materials it is made of, its size and shape, and the tension of its top, or drumhead -- all affect how the drum sounds. In this video segment, two members of the ZOOM cast create drums of different sizes, shapes, materials, and tensions, and compare the results.

This video is available in both English and Spanish audio, along with corresponding closed captions.

Balloon Brain: Designing a Helmet

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As humans, we thankfully have more going for us than the balloon brains depicted in this video segment adapted from ZOOM. Still, the failed efforts of some of the ZOOM cast members to design adequate protection for their balloon brains illustrates the importance of wearing a proper helmet and protecting your own brain whenever you skate, rollerblade, ski, or ride a bike.

Triangles: Designing a Newspaper Chair

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Once it's been read, there's often little more to do with the daily newspaper than to add it to that towering stack of recyclables we collect each week. In this video segment, however, the ZOOM cast demonstrates how innovative design can turn this otherwise flimsy material into a relatively solid piece of furniture.

Becoming Green Energy Experts

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This Michigan State University/Lansing Boys and Girls Club partnership demonstrates the powerful result of giving youth the science background and tools they need to carry out investigations of their own design, and to communicate their knowledge in their own voice.

Mindy's Ice Rink - Episode | Ready Jet Go!

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Blast off with Jet and his friends as they learn about what makes ice special in this episode of the PBS KIDS show Ready Jet Go! Jet, Sean, Sydney, and Celery must retrieve ice from Saturn so they can build a skating rink for Mindy.

Super Grover 2.0: Wheels | Sesame Street

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A group of penguins wants to perform a dance routine, but a giant block of ice is sitting on their dance floor. With Super Grover 2.0's help, they add wheels to the bottom of the ice to move it out of the way. This resource teaches STEM curriculum.

Toolbox Todd Fixes a Wheel | Sesame Street

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When a robot needs help, Toolbox Todd and his box of tools arrive to save the day. Toolbox Todd investigates and observes that the problem is inside the robot. Using his screwdriver, he finds and fixes the problem. This resources focuses on STEM curriculum.

Gravity! | Science Trek

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Gravity is the force of attraction between two objects.  It is what makes things fall and what keeps us from floating off into space.  Gravity is a fundamental force of nature.  How does it work?

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