Across
- 4. the natural force that tends to cause physical things to move towards each other
- 7. a scientific test in which you perform a series of actions and carefully observe their effects in order to learn about something
- 9. 조상
- 10. ㄷㄷㅎ
Down
- 1. ㅂㅇ
- 2. a long, narrow piece of something
- 3. a straight line from one side of something (such as a circle) to the other side that passes through the center point see picture at GEOMETRY
- 5. raising force
- 6. 폭
- 8. jet, rocket: force