Firefly
Featured in: Year 4: Electricity
Firefly
Invertebrate
A bulb turns electrical energy into light. Some creatures can make their own light using chemistry!
Nature's Equivalent:
A firefly or glow-worm uses a special chemical reaction inside its body to produce light. This is called 'bioluminescence' (which means 'living light'). They use it to talk to each other and attract a mate.
💡 Fun Facts
- Fireflies are super efficient! Unlike a light bulb, which wastes lots of energy as heat, a firefly's light is 'cold light' and wastes almost no energy.
- For a 'buzzer' equivalent, a rattlesnake has a special rattle on its tail, which it shakes to create a loud buzzing sound to warn off predators.
Name Story
Photinus pyralis
means “the shining fire-maker — though it is neither on fire nor a fly”
What does its name mean?
- Photinus — shining, full of lightGreek (phōteinos, 'shining', from phōs, 'light')
- pyralis — fireGreek (pyr, 'fire')
- firefly — fire + flyEnglish
A firefly is really a little beetle, not a fly at all — and its glowing "fire" is cold, giving off light with almost no heat as it signals to other fireflies in the dark.