| A | B |
|---|
| hero | developed the first rocket engine propelled by steam |
| chinese | the first people to develop gunpowder |
| arrows of flying fire | the chinese and mongols used rockets as ____ in th 1200s |
| Roger Bacon | in england increased the range of rockets |
| jean froissart | in France acheived more accuracy by launching rockets through tubes |
| Sir Issac Newton | 17th century laid the foundations for modern when he developed his laws of motion |
| Colonel William Congreve | designed rockets for military use in the 18th century |
| Dr. Robert H. Goddard | conducted many practical rocket experiments and became known as the father of modern rocketry |
| liquid oxygen and gasoline | fueled Goddard's first successful flight |
| werner von braun | directed the building of the V-2 rocket |
