Here are 10 aviation terms and definitions to them. Try to match the terms with their definitions, memorize them.

a) ceiling

b) forecast

c) flight visibility

d) ground visibility

e) instrument meteorological conditions(IMC)

f) meteorological information

g) meteorological office

h) meteorological report

i) SIGMET information

j) visual meteorological conditions (VMC)

1. The visibility at the aerodrome, as reported by an accredited observer.

2. Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, equal to or better than specified minima.

3. A statement of observed meteorological conditions related to a specified time and location.

4. Information issued by a meteorological watch office concerning the occurrence of specified en-route weather phenomena which may affect the safety of aircraft operations.

5. Meteorological report, analysis, forecast, and any other statement relating to existing or expected meteorological conditions.

6. A statement of expected meteorological conditions for a specified time or period, and for a specified area or portion of airspace.

7. An office designated to provide meteorological service for international air navigation.

8. Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, less than the minima specified for visual meteorological conditions.

9. The height above the ground or water of the base of the lowest layer of the cloud below 6000m (20,000 ft) covering more than half the sky.

10. The visibility forward from the cockpit of an aircraft in flight.