Crossword Puzzle - Science

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Across
  1. 3. A variable that never changes
  2. 5. A formal idea or set of ideas that is intended to explain something
  3. 6. A process for studying and experimenting, to help you reach scientific conclusions.
  4. 7. A variable that you change on purpose
  5. 9. A rule or set of rules that is permanent
Down
  1. 1. A variable that responds to the independent variable
  2. 2. An idea or proposition that can be tested by observations or experiments, about the natural world
  3. 4. A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
  4. 6. Knowledge about the natural world that is based on facts learned through experiments and observation
  5. 8. Facts and statistics collected together for reference or analysis