| A | B |
| cataract | a large bolder, granite rock in a river causing rapids or waterfalls |
| Flood | an over flow of water beyond its normal confines |
| Nile River | longest river in the world, over 4,100 miles long |
| recede | to go back |
| Nile delta | triangular, marshy land, mouth of river |
| irrigation | the supply of water to land or crops to help growth |
| shaduf | ancient tool used for irrigation to water filed |
| Egypt | African country located south east of Mediterranean sea |
| Upper Egypt | region located in the south of Egypt |
| Lower Egypt | region located in the north of Egypt |
| Papyrus | reed plant that grows in the Nile Delta was used to make the first paper |
| silt | rich top soil left behind after river recedes |