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. 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






2. 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






3. 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.






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






5. 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






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






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






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






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






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






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






12. Mount of water vapor in the air






13. 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






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






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






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






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






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






19. 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






20. 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






21. 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.






22. 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






23. 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.






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. 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.






27. 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






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






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






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






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






32. 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






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






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






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






36. 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