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Across 1. on a weather map it is a line that connects areas of equal temperature 7. weather forecast that compares current weather patterns to past weather patterns 9. on a weather map it is a line that connects areas of equal pressure 10. balloon borne weather instrument 11. measures humidity

Down 2. weather forecast that uses numerical data 3. measures air pressure 4. record of weather data for a specific place at a specific time using meteorological symbols 5. measures temperature 6. change in wave frequency that occurs due to the relative motion of the wave as it moves towards or away from an observer 8. measures wind speed