Mystery Science Unit 4 Vocab

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Across
  1. 3. a system of words, letters, or other symbols that stand for other words, letters, or symbols
  2. 5. someone who comes up with something new, often an object or a way of doing something
  3. 7. how high or how low a sound is when you hear it
  4. 9. a device that shows wave patterns
  5. 10. a form of energy, such as what usually powers light bulbs
  6. 12. a pretend version of something that scientists use when the real thing is too big, small, or complicated to work with
  7. 14. vibrations that you can usually hear with your ears
  8. 16. the gases that surround the Earth
  9. 17. the way sounds travel in an up-and-down pattern
  10. 19. to take a code and change it to a different form that can be understood
  11. 20. to move from one place to another
  12. 22. an empty space without any air
  13. 23. the distance between two points of a wave
Down
  1. 1. a sound that bounces off a surface and travels back to someone's ears
  2. 2. a measure of how many waves go by you in a set amount of time
  3. 4. a person who uses science to come up with solutions to problems
  4. 6. something that happens again and again and again in a way that can be predicted
  5. 8. how loud a sound is
  6. 11. to exchange information
  7. 13. the height of a wave
  8. 15. a quick movement back and forth
  9. 18. a part of the ear that vibrates to help us hear sounds
  10. 21. a test used to discover new information about a question