Weather Terms

2. A cloud forming a thin, more or less uniform, semitranslucent layer at high altitude.
4. The boundary of an advancing mass of warm air, in particular the leading edge of the warm sector of a low-pressure system.
6. An instrument for measuring the speed of the wind, or of any current of gas.
7. Atmospheric water vapor frozen into ice crystals and falling in light white flakes or lying on the ground as a white layer.
10. Moisture condensed from the atmosphere that falls visibly in separate drops.
11. A cloud forming a towering mass with a flat base at fairly low altitude and often a flat top, as in thunderstorms.
12. Clouds which have flat bases and are often described as "puffy", "cotton-like" or "fluffy" in appearance
14. A form of precipitation consisting of ice pellets, often mixed with rain or snow.
15. An instrument measuring atmospheric pressure, used especially in forecasting the weather and determining altitude.
18. A cloud forming a low layer of clumped or broken gray masses.
21. A balloon equipped with meteorological apparatus which is sent into the atmosphere to provide information about the weather.
22. Pellets of frozen rain which fall in showers from cumulonimbus clouds.
23. The boundary of an advancing mass of cold air, in particular the trailing edge of the warm sector of a low-pressure system.

1. A type of cloud forming a thick uniform gray layer at low altitude, from which rain or snow often falls without any lightning or thunder.
3. A cloud generally characterized by thin, wispy strands.
4. An instrument used for showing the direction of the wind.
5. A cloud forming a continuous horizontal gray sheet, often with rain or snow.
8. A light, flexible cylinder or cone mounted on a mast to show the direction and strength of the wind, especially at an airfield.
9. An instrument for measuring the humidity of the air or a gas.
13. An instrument for measuring and indicating temperature.
16. A warm air mass is caught between two colder air masses. The colder air moves under the warmer air pushing it up and then moves forward until it meets a mass that is warmer and pushes it up too.
17. Weather front or transition zone between two air masses, when neither air mass is advancing into the other at a speed exceeding 5 knots at the ground surface.
19. A hygrometer, which is an instrument used to measure the amount of water vapor in the air, consisting of a wet-bulb and a dry-bulb thermometer, the difference in the two thermometer readings being used to determine atmospheric humidity.
20. A device for collecting and measuring the amount of rain which falls.