Across
- 4. The study of past events
- 5. The point where two lines meet
- 9. A literary work, typically long and complex
- 10. A drawing or painting
- 12. The study of the Earth's physical features
- 18. A large body of saltwater
- 19. The branch of science that deals with matter and energy
- 21. The fall of the Wall in 1989
- 22. A famous Portuguese novelist, author of Blindness
- 23. A primary colour, often associated with the sky
- 25. A natural satellite of a planet
- 26. A form of energy that makes things visible
- 27. The study of the universe beyond Earth's atmosphere
- 28. The sum of all sides of a shape
- 29. A famous Portuguese poet, author of The Lusiads
Down
- 1. A triangular number sequence
- 2. A short, often humorous, piece of writing or performance
- 3. The force that pulls objects towards the Earth
- 6. A place where art is displayed
- 7. The science of classifying organisms
- 8. A musical instrument with black and white keys
- 11. The highest mountain in the world
- 13. The process by which plants make their own food
- 14. The main character in a play or book
- 15. The period of rebirth in European art and culture
- 16. The study of the human mind and behaviour
- 17. A device for viewing distant objects
- 19. A number that can only be divided by one and itself
- 20. A period of one hundred years
- 24. The capital city of Portugal