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
Temperature

Temperature

The average kinetic energy of particles in a body of matter.

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Radioactivity

Radioactivity

The spontaneous decay of atomic nuclei.

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Emission

Emission

The release of electromagnetic radiation from an atom or molecule.

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Long-period events

Long-period events

Earthquakes with relatively low-frequency vibration.

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Oceanic crust

Oceanic crust

The uppermost solid layer of the Earth beneath the oceans

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Fossil Glossary video

Fossil Glossary video

Trace of an animal or plant that lived a long time ago.

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