📖 Science glossary A–Z
Child-friendly definitions with examples, pronunciation, and Chinese (中文) and Malay (Bahasa Melayu) translations where helpful.
👀 Observation /ob-ser-VAY-shun/ · 观察 · pemerhatian
Looking, listening and noticing carefully.
Using your senses to notice what is happening.
Example: An observation: "The leaves are yellow." · Related: inference, prediction
🧱 Opaque /oh-PAYK/ · 不透明 · legap
Something light cannot shine through.
A material that light cannot pass through.
Example: A wooden door is opaque — no light gets through. · Related: light, shadow, transparent