Across
- 2. a large disproportionate slab of rock generally composed of continental and oceanic lithosphere
- 3. Change in direction of the transmission of waves
- 6. The length between two successive crests of a wave
- 11. The measure of hotness and coldness expressed in terms of scales such as Fahrenheit or Celsius
- 12. a vent in the crust of the earth from which is usually molten rock
- 14. a gas that humans need to breath
- 16. The study of life
- 17. Average condition of weather at a place over the period of years
- 19. A substance that has a defined composition
- 20. The maximum displacement from the equilibrium of a wave
- 24. It makes up about 78 percent of the atmosphere and has the atomic number of 7
- 25. The transfer of electricity between two substances through direct transmission
- 27. The motion in a gas or liquid where the warmer portions rise and the colder portions sink.
Down
- 1. The highest point of a wave
- 4. a species becoming extinct
- 5. h2o
- 7. the envelope of gas surrounding a planet
- 8. The flow of electrical charge
- 9. The basic particles of chemical elements
- 10. the gas that humans exhale
- 13. Smallest unit of life that is responsible for the body processes
- 15. The energy an object has when it is in motion
- 18. Energy from a source that travels through space at the speed of light
- 21. The process by which plants take in sunlight and grow
- 22. The lowest point of a wave
- 23. The ability to do work
- 26. a deficiency of precipitation over a period of time