Instructional Video0:50
Curated Video

Gravity - Attractive Force of Mass

6th - 12th
An attractive force that acts between all matter that has mass, and is proportional to mass.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning images and concise...
Instructional Video0:57
Curated Video

Moon

6th - 12th
A general name for a natural satellite of a planet, but also the specific name for Earth's only natural satellite.
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A Twig Science
Glossary Film.
Key scientific terms defined in just 60 seconds using stunning...
Instructional Video
PBS

Pbs Learning Media: To Scale: The Solar System

9th - 10th
The enormity of the solar system can sometimes be too big to imagine. A scale model can help us visualize the size in an easy to understand way. Watch as scientists build a model of the solar system in a dessert just 7 miles in diameter!...