Test your basic knowledge |

Weather Fundamentals

Subject : science
Instructions:
  • Answer 36 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. If air cools to the temp at which its relative humidity is 100% - the water saturated air is still invisible. If it cools further - it will have more ater vapor than it can hold and some of the water will condense into tiny water droplets - to form c






2. Daily fluctuations in temperature - wind speed - and precipitation






3. Lowest layer. Where all weather phenomena occur. Extends to altitude of 10 to 15 km - contains about 90@ of mass of atmosphere - including about all water vapor.






4. Atmosphere has layered structure. defined by temp - pressure - and chemical composition






5. High pressure system. when cool air in the upper atmosphere has higher density than its surrounding - creating high pressure system. It moves twd the ground - so air moves way from the high pressure system near earth's surface






6. Rising air exerts less downward pressure than falling air. air near the ground surface is pulled in toward the low pressure center to replace the rising air






7. Average atmospheric pressure at sea level equals 14.7 lbs. due to weight of overlying air column






8. When it is water saturated (the maximum amount of water that the air mass can hold at a given temperature






9. Amount of water vapor an aim mass holds. air can dissolve water






10. Mount of water vapor in the air






11. Envelope of gases surrounding earth - extending from the surface to about 10 -000 km above






12. Occurs when rising air expands without change in heat content. Whenever an air mass expands - the available heat is distributed over a larger volume so the air becomes cooler.






13. Decreases upward to altitude of 10-15 km due to increase distance above main mass of earth - which absorbs sunlight and reradiates it as heat






14. Differences in air pressures between high and low pressure systems. The larger the differences in air pressures - the stronger they are






15. Differences in air pressures between high and low pressure systems. The larger the differences in air pressures - the stronger they are






16. Low pressure system. When an air mass near the ground is heated - the air molecules vibrate faster - cause the air mass to expand and its density to decrease. With a lower density than the surrounding air - the mass rises to create a low pressure reg






17. Envelope of gases surrounding earth - extending from the surface to about 10 -000 km above






18. Atmosphere has layered structure. defined by temp - pressure - and chemical composition






19. High pressure system. when cool air in the upper atmosphere has higher density than its surrounding - creating high pressure system. It moves twd the ground - so air moves way from the high pressure system near earth's surface






20. Daily fluctuations in temperature - wind speed - and precipitation






21. Contains ozone layer - temperature increases upward due to oxygen - which absorbs UV radiation






22. Rising air exerts less downward pressure than falling air. air near the ground surface is pulled in toward the low pressure center to replace the rising air






23. Low pressure system. When an air mass near the ground is heated - the air molecules vibrate faster - cause the air mass to expand and its density to decrease. With a lower density than the surrounding air - the mass rises to create a low pressure reg






24. Mount of water vapor in the air






25. Depends on temp; cold air can dissolve little water whereas warm air can dissolve a lot.






26. Ratio of observed absolute humidity divided by sbsolute humidity at dew point






27. Amount of water vapor an aim mass holds. air can dissolve water






28. Occurs when rising air expands without change in heat content. Whenever an air mass expands - the available heat is distributed over a larger volume so the air becomes cooler.






29. Depends on temp; cold air can dissolve little water whereas warm air can dissolve a lot.






30. Lowest layer. Where all weather phenomena occur. Extends to altitude of 10 to 15 km - contains about 90@ of mass of atmosphere - including about all water vapor.






31. When it is water saturated (the maximum amount of water that the air mass can hold at a given temperature






32. Decreases upward to altitude of 10-15 km due to increase distance above main mass of earth - which absorbs sunlight and reradiates it as heat






33. Average atmospheric pressure at sea level equals 14.7 lbs. due to weight of overlying air column






34. If air cools to the temp at which its relative humidity is 100% - the water saturated air is still invisible. If it cools further - it will have more ater vapor than it can hold and some of the water will condense into tiny water droplets - to form c






35. Ratio of observed absolute humidity divided by sbsolute humidity at dew point






36. Contains ozone layer - temperature increases upward due to oxygen - which absorbs UV radiation