Science Glossary
  • 500+ key scientific terms visualised 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
Doppler shift

Doppler shift

A change in the observed frequency of a wave.

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Coulomb

Coulomb

The SI unit of electric charge.

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Epicentre

Epicentre

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

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Modulation

Modulation

A term used in physics and electronics, modulation means changing some aspect of a periodic phenomenon, generally the frequency, amplitude, or phase of a waveform.

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Redox reaction

Redox reaction

A reaction in which oxidation and reduction occur together.

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Tropism

Tropism

When a plant grows in a particular direction in response to an external stimulus.

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