Science Glossary
  • 500+ key scientific terms visualized in stunning images and concise textual definitions
  • Short 30–60 second films using memorable visual and written learning cues
  • Clear and engaging, Twig Science Glossary reinforces the learning of key curriculum terms
Launch window

Launch window

The time period within which a rocket must be launched to achieve the desired goal.

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Element

Element

A pure substance that cannot be broken down any further.

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Ionic bond

Ionic bond

A chemical bond based on the electrostatic attraction between oppositely charged ions.

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Food chain

Food chain

How energy moves through living things in an ecosystem.

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Liquid

Liquid

One of the three classical states of matter.

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Supersonic

Supersonic

Traveling faster than the speed of sound.

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