Pattern and Relationship Crossword

1234567891011121314
Across
  1. 4. Patterns with straight lines.
  2. 7. How many years in a century.
  3. 10. Each part of the sequence.
  4. 13. This code is used for radio signals.
  5. 14. We watch these patterns after the news.
Down
  1. 1. The difference between each term is decided by this.
  2. 2. This is the same as a thousand as in ____ grams.
  3. 3. These patterns are made by humans.
  4. 5. This sequence has letters and numbers.
  5. 6. These numbers cannot be divided by 2 with nothing left over.
  6. 8. This sequence has numbers only.
  7. 9. These numbers can all be divided by 2 with nothing left over.
  8. 11. When the pattern starts again it...?
  9. 12. These patterns occur in nature.