Across
- 2. Operated by a machine or a machinery
- 4. Relating to chemistry, or the interactions of substances as studies in chemistry
- 6. Vibration that travels through the air or another medium and can be heard when they reach a person or animal's ear
- 7. The quality of being hot; high temperature
Down
- 1. Related to movement towards a center of gravity
- 3. Relating to or resulting from motion
- 5. The natural agent that stimulates sights and makes things invisible
- 6. Energy that comes from the sun