science

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Across
  1. 4. an airlike fluid substance which expands freely to fill any space available
  2. 5. a judgment or decision reached by reasoning.
  3. 8. a set of principles on which the practice of an activity is based.
  4. 9. the amount of space that a substance or object occupies
  5. 10. the degree of compactness of a substance.
Down
  1. 1. large body of matter with no definite shape.
  2. 2. proposed explanation made on the basis of limited evidence as a starting point for further investigation.
  3. 3. that which occupies space
  4. 6. flowing freely but of constant volume
  5. 7. firm and stable in shape