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
Fetus

Fetus

A developing mammal or other organism that matures inside its mother's body.

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Meteorite

Meteorite

A rocky fragment from space that survives its fiery passage through the atmosphere and falls to Earth.

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Epicenter

Epicenter

The point on the Earth's surface directly above the point at which an earthquake originates.

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Angle of incidence

Angle of incidence

The angle between a reflected ray and the line perpendicular to the surface at this point.

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Reactivity

Reactivity

The tendency of a substance to undergo chemical reactions.

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Volatile

Volatile

A substance which turns easily into a vapor.

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