Weather crossword

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Across
  1. 3. a person who is an expert in weather forecasting
  2. 5. it has a line both red triangles and blue half circles on it
  3. 7. it is a line with blue triangles on it
Down
  1. 1. it is a line with red half circles on it
  2. 2. what meteorologist study and is an expert at
  3. 4. it has a line that is purple and has purple half circles and purple trianges on it
  4. 6. boundaries between two air masses that differ temperature, humidity, and density