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Worksheet M.1 Name: _________ Weather Factors Date: _________ I. Multiple choice. Circle the correct answer: 1. What percentage of sunlight is absorbed by the surface of the earth? a) 25% b) 50% c) 5% d) 15% 2. Energy from the Sun travels to earth’s surface by __________. a) radiation b) convection c) evaporation d) conduction 3. Rising warm air transports thermal energy by __________. a) conduction b) convection c) that is closest to the Earth surface d) radiation 4. In the troposphere as the altitude increases __________. a) air pressure decreases b) temperature decreases c) air density decreases d) all of the above 5. A local wind that blows from the sea onto the land on a hot sunny day is called___________. a) jet stream b) sea breeze c) land breeze d) local wind 6. A type of cloud that form in flat layers and covers much of the sky is __________. a) cirrus b) cumulus c) fog d) stratus 7. Hailstones form only in the type of clouds caleld ___________. a) nimbostratus b) altocumulus c) cumulonimbus d) cirrocumulus 8. Rain, sleet and hail are all forms of ____________. a) evaporation b) condensation c) precipitation d) convection 9. Wind speed is often measured with a (an) __________. a) wind vane b) anemometer c) psychrometer d) thermometer 10. In Northern Hemisphere, global winds that blow from the southwest to the northeast are… a) polar easterlies b) trade winds c) prevailing easterlies d) prevailing westerlies Prepared by Mr. Victor II. Completion. Complete the sentences with the words from the box. Be aware that one word is not used: air Coriolis effect stratus water cycle stratosphere rain ai pressure 11. The three main types of clouds are cumulus, cirrus and ______________. 12. The most common type of precipitation is _____________. 13. When the global winds don not follow a straight path from the North Pole to the equator is called ______________. 14. Winds are caused by differences in the ____________. 15. The movement of water in the atmosphere is called the ______________. III. True or False. __________ 16. The part of sunlight with the shortest wavelength is visible light. __________ 17. When you walk barefoot on hot sand, heat is transferred to your feet from the sand by radiation. __________ 18. Wind direction is often measured with a wind vane. __________ 19. A wind blowing toward the north is called a north wind. __________ 20. Stratus clouds are made mostly of ice crystals. IV. Interpreting tables: Wind-Chill Temperature Index Wind speed Equivalent Air Temperature (0C) 0 km/h 50 00 -50 -100 10 km/h 2.70 -3.30 -9.30 -15.30 0 0 0 15 km/h 1.7 -4.4 -10.6 -16.70 20 km/h 1.10 -5.20 -11.60 -17.90 21. On a windy winter’s day, the actual air temperature is 50C and the wind speed is 15 km/h. What would the wind chill factor make the temperature feel like to a person outdoors? a) 50C b) 00C c) 1.70C d) -4.40C 22. Use trends shown in the data table to predict how cold the air temperature would feel if the actual temperature was 00C, and the wind speed was 25 km/h. a) about 00C b) about -60C c) about -150C d) about 25 0C V. Answer the questions: 23. List 3 forms of radiation from the Sun. _____________________________________________________________________________ 24. Which form of radiation has the longest wavelength? _____________________________________________________________________________ 25. How might conditions be different without the greenhouse effect? _____________________________________________________________________________ 26. Name 3 ways the heat can be transferred in the troposphere. _____________________________________________________________________________ 27.Name 3 major global wind belts. _____________________________________________________________________________ 28. Name 2 conditions that are necessary for clouds to form: ___________________________ Prepared by Mr. Victor