Across
- 3. A substance that speeds up a chemical reaction without being used up.
- 5. Method used to separate an insoluble solid from a liquid.
- 10. The planting of trees to create or restore forests.
- 12. A solid whose particles are arranged in a regular repeating pattern.
- 14. Change of a gas into a liquid on cooling.
- 16. A grooved wheel used to lift heavy loads.
- 19. A transparent object that separates white light into seven colours.
- 20. A feature that helps an organism survive in its habitat.
- 22. SI unit of force, named after a famous scientist.
- 23. A streak of light produced when a space rock burns in Earth's atmosphere.
- 24. An event in which one celestial body blocks the light of another.
- 27. A group of similar cells performing the same function.
- 28. Slow destruction of metals due to reaction with the environment.
- 30. Structure made of different tissues working together.
Down
- 1. Using resources responsibly so future generations can also benefit.
- 2. A biological catalyst that speeds up reactions in living organisms.
- 4. A mixture of two or more metals, or a metal with another element.
- 6. Instrument used to measure temperature.
- 7. A rocky object orbiting the Sun, mostly found between Mars and Jupiter.
- 8. A simple machine used to multiply force.
- 9. A material through which electricity flows easily.
- 11. The tendency of an object to resist changes in its state of motion.
- 13. Nutrient-rich material produced from decomposed organic waste.
- 15. The bending of light as it passes from one medium to another.
- 17. An ecosystem where land remains saturated with water.
- 18. An animal that eats both plants and animals.
- 21. An animal that possesses a backbone.
- 25. Transfer of pollen from anther to stigma.
- 26. Atoms of the same element having different numbers of neutrons.
- 29. A type of rock formed from compacted layers of sediments.