Across
- 4. What layer of the Earth lies directly beneath the crust?
- 8. What organ in the human body is responsible for filtering blood?
- 12. What process allows plants to convert sunlight into food?
- 14. What gas do plants absorb from the air?
- 15. Which natural disaster is measured using the Richter scale?
- 16. What type of animal is a frog?
- 19. What famous ship sank after hitting an iceberg?
- 20. What term describes a government ruled by the people?
Down
- 1. What is the hardest natural substance on Earth?
- 2. What is the name of the study of the past based on written records?
- 3. What metal is liquid at room temperature?
- 5. What language originated in ancient Rome and influenced many modern languages?
- 6. Which ancient city was famously buried by the eruption of Mount Vesuvius in 79 AD?
- 7. What gas makes up most of Earth’s atmosphere?
- 9. Which desert is the largest hot desert in the world?
- 10. Which active NHL player has scored the most career points?
- 11. What is the largest organ in the human body?
- 13. Which Italian Renaissance artist painted the ceiling of the Sistine Chapel?
- 17. Which country has won the most FIFA World Cup titles?
- 18. Which Greek philosopher taught Alexander the Great and wrote extensively on logic, science, and ethics?