Across
- 1. Largest internal organ in the human body
- 3. The fastest land animal
- 5. The hardest natural substance
- 8. Capital city of Australia
- 9. Largest planet in our solar system
- 10. Capital city of Japan
- 13. Planet known as the Red Planet
Down
- 2. Scientist who developed the theory of general relativity
- 4. Country known as the Land of the Rising Sun
- 6. The largest ocean on Earth
- 7. Organ that pumps blood through the body
- 11. Chemical symbol “O” stands for this element
- 12. Capital city of Canada