the Wave

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Across
  1. 2. the person who leads or commands a group, organization, or country
  2. 6. a person who takes part in any event
  3. 7. a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact
Down
  1. 1. one of a regulation or principle
  2. 3. the practice of training people to obey rules or a code of behaviour, using punishment to correct disobedience
  3. 4. move one's hand to and fro in greeting or as a signal
  4. 5. a group of players forming one side in a competitive game or sport