Across
- 3. Movement of people to a new area
- 5. A large object that orbits a star
- 6. The study of past events
- 9. The study of ancient cultures
- 10. Energy that powers lights and machines
- 11. A system of money and jobs
- 12. A document with the basic laws of a country
- 13. Energy that does not run out
- 14. A tool to see far away objects
- 17. One of the large land masses on Earth
- 19. Finding something new
- 21. The number of people in a place
- 22. Basic rights all people should have
- 23. The gas humans need to breathe
- 26. The movement of water on Earth
- 27. A global network for information
- 28. A system of government where people vote
- 29. An increase in prices over time
Down
- 1. The Sun and all the objects around it
- 2. When water changes from liquid to gas
- 4. Something created for the first time
- 7. A very large body of salt water
- 8. Medicine that helps prevent disease
- 11. An imaginary line around the middle of the Earth
- 15. The process of learning
- 16. A tool to see very small objects
- 18. The force that pulls objects to Earth
- 20. Long term changes in Earth’s weather
- 24. Reusing materials to reduce waste
- 25. The use of science to solve problems