Across
- 2. Object that produces a magnetic field
- 6. Flow of electric charge
- 8. Group of atoms chemically bonded together
- 12. Smallest unit of an element
- 13. Process plants use to make food from sunlight
- 15. Gas essential for most life on Earth
- 17. Energy transferred because of temperature difference
- 19. Element found in all known living things
- 20. Process of converting waste into reusable materials
- 22. Force that resists movement between surfaces
- 24. Capacity to do work
- 26. Process by which gas changes into liquid
- 27. Tiny infectious agent that requires a host cell
- 28. Process where liquid becomes solid
Down
- 1. Measure of how hot or cold something is
- 3. Device that stores electrical energy
- 4. Microscopic single-celled organisms
- 5. Basic unit of life
- 7. Process where solid becomes liquid
- 9. Process by which liquid changes into gas
- 10. Measure of electrical potential difference
- 11. Community of organisms and their environment
- 14. Systematic study of the natural world
- 16. Force that pulls objects toward Earth
- 18. Change in position over time
- 20. Process by which living things release energy from food
- 21. Form of energy visible to the human eye
- 22. Push or pull acting on an object
- 23. Molecule carrying genetic information
- 25. Vibration that travels through a medium