🔬 SCIENCE WORDS
Science vocabulary words for kids
Start with a curated 20-word science glossary you can use immediately, then adapt the learning target or generate a level-matched game when you need something more specific.
READY-TO-USE RESOURCE
20 useful science vocabulary words
Use these science terms and concise definitions as a study sheet, a quick vocabulary check, or the starting point for spelling practice.
- atomThe smallest unit of an element that keeps its chemical properties.
- cellThe smallest structural unit of a living organism.
- condensationThe change from a gas into a liquid.
- ecosystemLiving things and their physical environment interacting together.
- energyThe ability to do work or cause change.
- evaporationThe change from a liquid into a gas.
- experimentA controlled test used to answer a question.
- forceA push or pull that can change motion.
- frictionA force that resists motion between touching surfaces.
- gravityThe force that attracts objects toward one another.
- habitatThe natural home of an organism.
- hypothesisA testable explanation for an observation.
- magnetismA force that attracts or repels certain materials.
- matterAnything that has mass and takes up space.
- moleculeTwo or more atoms chemically joined together.
- observationInformation gathered using the senses or tools.
- organismAn individual living thing.
- photosynthesisThe process plants use to make food from light.
- temperatureA measure of how hot or cold something is.
- velocitySpeed in a particular direction.
You do not need to practise all 20 words at once. Think Champion's current Free Trial includes all six challenge modes with up to 5 words per game; Pro removes the per-game word limit and adds stronger review tools.
How to use this science vocabulary list
- Choose the relevant words: start with the terms that match the current lesson instead of treating all 20 as a mandatory test.
- Check meaning first: ask the learner to explain each selected word in simple language.
- Say and hear the word: make sure pronunciation is familiar before testing spelling.
- Practise recall: spell from audio, reconstruct the word, or identify it from the definition.
- Review the weak set: repeat the smaller group that is still being missed.
Use generation when you need a different difficulty or narrower topic
This static glossary is a broad science resource. Think Champion can also generate a new list from the learner level and topic, so a beginning learner does not have to receive the same practice as an older student. Examples the generator may work around include atoms, gravity, experiment, magnet, laboratory.
Vocabulary understanding matters as much as spelling
A learner who cannot explain or recognise a subject word may struggle to spell it for reasons beyond letter memory. Use pronunciation, phonetics, definitions, synonyms, antonyms, and example sentences when they help make an unfamiliar term understandable.
Keep the learning target stable while changing the prompt
The same selected science words can be practised through recognition, jumbles, audio spelling, fill-in-the-blank, clue-based questions, and word building. Changing the prompt can reveal whether the learner truly knows the word without forcing you to replace the list.
Frequently asked questions
Is this science list usable without creating an account?
Yes. The 20-word glossary and definitions are provided directly on this page as a standalone learning resource.
Can Think Champion generate a different science list for my child’s level?
Yes. Choose the learner level and Science topic to generate a different starting set, or create a custom game from the exact vocabulary your lesson already uses.
Do I need to practise all 20 words at once?
No. Start with the words relevant to the current lesson and expand or rotate the set as the learner becomes comfortable.
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