Vocabulary for Science: Key Words Every Primary Student Should Master
A strong foundation in science begins with mastering key vocabulary. For primary school students, understanding essential science terms not only enhances academic success but also nurtures curiosity and confidence in exploring the world. At EduKate Singapore, we focus on equipping students with the vocabulary they need to excel in science while fostering a love for learning. Developing a strong science vocabulary is essential for primary school students in Singapore, as it lays the foundation for understanding key scientific concepts and principles. Below is a curated list of 100 essential science terms, categorized by themes commonly covered in the Singapore primary science curriculum.
Key Science Vocabulary for Primary School Students
Here’s a curated list of essential science words that every primary student should master:
Each term is accompanied by a brief definition to aid comprehension.
1. Diversity
- Organism: Any living thing, including plants, animals, and microorganisms.
- Species: A group of similar organisms capable of interbreeding and producing fertile offspring.
- Habitat: The natural environment where an organism lives.
- Adaptation: A characteristic that enhances an organism’s ability to survive in its environment.
- Classification: The process of grouping organisms based on shared characteristics.
- Invertebrate: An animal lacking a backbone, such as insects or mollusks.
- Vertebrate: An animal with a backbone, including mammals, birds, reptiles, amphibians, and fish.
- Microorganism: A microscopic organism, such as bacteria or fungi.
- Biodiversity: The variety of life forms within a particular habitat or ecosystem.
- Ecosystem: A community of living organisms interacting with their physical environment.
2. Cycles
- Life Cycle: The series of stages an organism goes through from birth to reproduction and death.
- Metamorphosis: A transformation process some organisms undergo during their life cycle, such as a caterpillar becoming a butterfly.
- Photosynthesis: The process by which green plants use sunlight to synthesize food from carbon dioxide and water.
- Respiration: The process of breathing and using oxygen to produce energy from food.
- Germination: The process by which a seed develops into a new plant.
- Pollination: The transfer of pollen from the male part of a flower to the female part, enabling fertilization.
- Fertilization: The union of male and female gametes to form a new organism.
- Evaporation: The process by which water changes from a liquid to a gas.
- Condensation: The process by which water vapor changes back into liquid droplets.
- Precipitation: Any form of water, such as rain or snow, that falls from the atmosphere to the Earth’s surface.
3. Systems
- Digestive System: The organs responsible for breaking down food and absorbing nutrients.
- Circulatory System: The system that circulates blood throughout the body, delivering oxygen and nutrients.
- Respiratory System: The organs involved in breathing and gas exchange.
- Nervous System: The network of nerve cells and fibers that transmits signals between different parts of the body.
- Skeletal System: The framework of bones that supports and protects the body.
- Muscular System: The tissues that enable movement of the body and maintain posture.
- Excretory System: The system that removes waste products from the body.
- Reproductive System: The organs involved in producing offspring.
- Immune System: The body’s defense against infectious organisms and other invaders.
- Endocrine System: The glands that produce hormones regulating various body functions.
4. Energy
- Kinetic Energy: The energy an object possesses due to its motion.
- Potential Energy: The energy stored in an object due to its position or state.
- Thermal Energy: The internal energy of an object due to the kinetic energy of its molecules.
- Chemical Energy: Energy stored in the bonds of chemical compounds, released during chemical reactions.
- Electrical Energy: Energy caused by the movement of electrons.
- Light Energy: Energy that is visible and can be emitted or absorbed by objects.
- Sound Energy: Energy carried by sound waves.
- Mechanical Energy: The sum of kinetic and potential energy in a system.
- Renewable Energy: Energy from sources that are naturally replenishing, such as solar or wind power.
- Non-renewable Energy: Energy from sources that cannot be replenished in a short period, like fossil fuels.
5. Interactions
- Force: A push or pull acting upon an object.
- Friction: The resistance that one surface or object encounters when moving over another.
- Gravity: The force that attracts a body toward the center of the Earth or any other physical body having mass.
- Magnetism: The force exerted by magnets when they attract or repel each other.
- Electricity: The set of physical phenomena associated with the presence and motion of electric charge.
- Conduction: The process by which heat or electricity is directly transmitted through a substance.
- Convection: The movement caused within a fluid by the tendency of hotter material to rise and cooler material to sink.
- Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles.
- Erosion: The process by which soil and rock are removed from the Earth’s surface by wind or water flow.
- Deposition: The geological process in which sediments, soil, and rocks are added to a landform.
6. Matter
- Atom: The basic unit of a chemical element.
- Molecule: A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
- Solid: A state of matter characterized by particles arranged such that their shape and volume are relatively stable.
- Liquid: A state of matter with a definite volume but no fixed shape.
- Gas: A state of matter without a definite shape or volume, with particles that move freely.
- Density: The mass per unit volume of a substance.
- Solubility: The ability of a substance to dissolve in a solvent.
- Mixture: A combination of two or more substances that are not chemically combined.
- Solution: A homogeneous mixture of two or more substances.
- Evaporation: The process of a liquid turning into a gas.
- Condensation: The process of a gas turning into a liquid.
- Freezing: The process of a liquid turning into a solid.
- Melting: The process of a solid turning into a liquid.
7. Living Things
- Photosynthesis: The process by which green plants produce food using sunlight.
- Respiration: The process of releasing energy from glucose, which occurs in all living cells.
- Transpiration: The process by which plants lose water vapor through their leaves.
- Pollination: The transfer of pollen from one flower to another to facilitate fertilization.
- Chlorophyll: The green pigment in plants responsible for absorbing light for photosynthesis.
- Stomata: Tiny pores on the surface of leaves for gas exchange.
- Xylem: Vessels in plants that transport water and nutrients from the roots.
- Phloem: Vessels in plants that transport sugars and other metabolic products.
- Herbivore: An animal that eats only plants.
- Carnivore: An animal that eats only other animals.
8. Ecosystems and Environment
- Decomposer: An organism, such as bacteria or fungi, that breaks down dead organic material.
- Food Chain: A series of organisms each dependent on the next as a source of food.
- Food Web: A system of interlocking and interdependent food chains.
- Predator: An animal that hunts and kills other animals for food.
- Prey: An animal that is hunted and killed by predators.
- Ecosystem: A community of interacting organisms and their physical environment.
- Sustainability: The ability to maintain ecological balance without depleting resources.
- Pollution: The introduction of harmful substances into the environment.
- Deforestation: The removal of a forest or group of trees for non-forest use.
- Conservation: The sustainable use and management of natural resources.
9. Scientific Process
- Hypothesis: A proposed explanation based on limited evidence, to be tested.
- Experiment: A scientific procedure undertaken to test a hypothesis.
- Observation: The act of carefully watching and recording phenomena.
- Inference: A conclusion reached based on evidence and reasoning.
- Variable: A factor in an experiment that can be changed or controlled.
- Control: A standard for comparison in an experiment.
- Data: Facts and statistics collected for analysis.
- Analysis: The process of examining data to draw conclusions.
- Conclusion: A judgment or decision reached after experimentation.
- Measurement: The process of obtaining the magnitude of a quantity.
10. Forces and Motion
- Force: A push or pull exerted on an object.
- Friction: The resistance that one surface or object encounters when moving over another.
- Gravity: The force that pulls objects toward the Earth.
- Magnetism: The force of attraction or repulsion between objects due to their magnetic fields.
- Acceleration: The rate of change of velocity of an object.
- Velocity: The speed of an object in a particular direction.
- Inertia: The resistance of an object to change its state of motion.
- Momentum: The quantity of motion an object has, depending on its mass and velocity.
- Work: The transfer of energy when a force is applied to an object over a distance.
- Energy: The capacity to do work or cause change.
These Top 100 Science Terms for Primary School in Singapore align closely with the MOE syllabus, preparing students to understand core scientific principles and apply them in real-world contexts. Mastery of these terms supports a strong foundation for future scientific learning in secondary school and beyond.
Why Science Vocabulary Matters
Mastering science vocabulary is critical because:
- Improved Understanding of Concepts: Scientific terms clarify complex ideas, helping students grasp topics like energy, ecosystems, and matter.
- Stronger Exam Performance: In exams like the PSLE, accurate use of scientific terminology can earn better marks in structured and open-ended questions.
- Enhanced Communication Skills: Students learn to articulate their thoughts clearly, making discussions and presentations more impactful.
How EduKate Singapore Teaches Science Vocabulary
At EduKate Singapore, we employ proven methods to make vocabulary learning effective and engaging:
- Fencing Method: We start Fencing Method with simple definitions and progressively build on them with examples and applications.
- Interactive Learning: Science experiments and hands-on activities bring abstract terms to life.
- Contextual Practice: Students learn words in context through comprehension exercises, writing tasks, and discussions.
- Visual Aids: Flashcards, diagrams, and videos make it easier to remember complex terms.
Tips for Parents to Support Science Vocabulary Learning
Parents play a vital role in reinforcing science vocabulary at home:
- Discuss Daily Science: Talk about natural phenomena like rain (evaporation and condensation) or plants (photosynthesis).
- Use Flashcards: Create flashcards for science terms and play quick revision games.
- Watch Educational Videos: Science-themed programs and videos make learning fun and engaging.
- Encourage Reading: Books and magazines on science topics introduce new words naturally.
The EduKate Advantage
At EduKate Singapore, we provide tailored science tuition that integrates vocabulary development with a focus on the latest MOE syllabus. Our small class sizes and experienced tutors ensure personalized attention, enabling each child to thrive academically.
Explore More with EduKate Singapore
Equip your child with the vocabulary they need to excel in science and beyond. Visit our homepage or contact us for a consultation. Follow us on Facebook for updates and resources.
🔗 Start Here: The eduKate Vocabulary Learning System™
If you want to understand how English ability actually grows from Primary school to O-Levels, and why many students plateau even after “studying hard”, start with our full system architecture here:
👉 The eduKate Vocabulary Learning System™ – How English Ability Actually Grows from PSLE to O-Levels
https://edukatesingapore.com/edukate-vocabulary-learning-system/
This page explains:
- what vocabulary really is (as a cognitive system),
- why rote memorisation fails,
- how the Fencing Method builds usable sentence control,
- how Metcalfe’s Law and S-curve learning grow vocabulary exponentially,
- and how parents can structure home training that actually works.
Supporting System Pages
To deepen your child’s vocabulary foundation, you may also explore:
👉 First Principles of Vocabulary – What Vocabulary Really Is
https://edukatesingapore.com/first-principles-of-vocabulary/
👉 Vocabulary Learning with the Fencing Method
https://edukatesingapore.com/vocabulary-learning-the-fencing-method/
👉 How to Learn Complex Sentence Structure for PSLE English (Fencing Method)
https://edukatesingapore.com/how-to-learn-complex-sentence-structure-for-psle-english-fencing-method/
👉 Vocabulary Lists for Primary to Secondary Students
https://edukatesingapore.com/2023/03/12/vocabulary-lists/
👉 Comprehensive Guide to Secondary English Vocabulary
https://edukatesingapore.com/comprehensive-guide-to-secondary-english-vocabulary/
eduKate Learning Umbrella (Our Full Education Architecture)
For parents who wish to understand eduKate’s full learning philosophy across English, Mathematics and exam mastery:
👉 Our Approach to Learning (eduKateSG)
https://edukatesg.com/our-approach-to-learning/
👉 The eduKate Learning System™ (All Subjects)
https://edukatesg.com/the-edukate-learning-system/
👉 The eduKate Mathematics Learning System™
https://edukatesg.com/the-edukate-mathematics-learning-system/
