Across
- 2. a type of stress created by rocks pushing against each other
- 3. a trace of an ancient organism preserved within a layer or rock
- 4. the height of a transverse wave from the midpoint to the crest or trough
- 6. a cloud in space made of gas and dust
- 8. a device that slows the flow of current in a circuit
- 10. the SI unit of resistance
- 11. fog or haze combined with smoke and other pollutants in the atmosphere
- 12. the SI unit of frequency
- 16. the highest point on a wave
- 18. the SI unit for electric charge
- 21. the bouncing of a wave after it hits an object
- 22. the smallest packet of electromagnetic energy
- 23. the use of force to move an object
- 24. the material or substance a wave moves through
Down
- 1. the top layer of soil
- 4. the SI unit of electric current
- 5. the SI unit of power
- 7. the lowest point on a wave
- 9. the downward movement of one of Earth’s plates beneath another plate
- 13. the place on Earth’s surface directly over the focus of an earthquake
- 14. a type of stress created by rocks pulling away from each other
- 15. the SI unit of work
- 17. the rate at which work is done
- 19. a fold in rock caused by compression that bends upward in an arch
- 20. the SI unit for magnetic field strength