Across
- 4. A symbol for an unknown quantity in mathematics.
- 6. A structure that is designed to reduce the amount of energy that reaches it.
- 8. An agreement between two or more groups or countries to help put an end to a disagreement or conflict.
- 9. To make changes to something.
- 10. An Egyptian queen that became pharaoh and helped expand trade in Egypt.
Down
- 1. To make changes with the intent of improving something.
- 2. A pharaoh of Egypt that expanded the empire and ruled for 66 years.
- 3. A four sided structure with a pyramid shaped top; a common monument in ancient Egypt.
- 5. A pharaoh that made many unpopular changes while he ruled.
- 7. A process that reverses the effect of another process.