Across
- 2. a building that serves as an observation point for an operation likely to be accompanied by heat, blast, or radiation hazard
- 3. a tool for measuring horizontal and vertical angles
- 4. a place where coal cars are loaded or emptied
- 5. a branch of mathematics that deals with relationships between the sides and angles of triangles
- 7. a bluish-white metal that is used especially to make brass and as a protective coating for things made of iron and steel
- 9. vertical distance
- 10. a crystalline salt that is used as an oxidizing agent in matches, fireworks, and explosives. Potassium _____.
- 11. earth-orbiting satellite launched by the Soviet Union in 1957
- 12. a crystalline salt that is used especially in making gunpowder, as a fertilizer, and in medicine. Potassium _____.
- 15. type of energy associated with motion
- 16. causing amazement or wonder
- 17. the finest screenings of coal produced at a mine unusable as fuel unless cleaned
Down
- 1. a fuel or an explosive substance that is used to make something (such as a rocket) go forward
- 6. when a substance reacts and combines with oxygen, often leading to something breaking down
- 8. an advanced branch of mathematics that deals mostly with rates of change and with finding lengths, areas, and volumes
- 11. another name for potassium nitrate
- 13. a black-and-white seabird of northern oceans
- 14. a science that deals with matter and energy and their interactions