1) It is a major element of the atmosphere a) water vapor b) dry air c) dust particles 2) It refer to minute solid particles floating in the air. a) water vapor b) dry air c) dust particles 3) What are the two types of dust particles?  a) natural b) caused by humans and natural c) caused by humans 4) The atmosphere can help maintain the Earth’s temperature to be suitable for life. a) true b) false 5) Atmosphere prevents Earth from some radiation such as ultraviolet radiation. a) true b) false 6) Rain is vital to life processes and the growth of living organisms. a) true b) false 7) What are the two features of the atmosphere?  a) atmospheric and meteorites b) meteorological and atmospheric c) comets and atmospheric 8) The temperature rises or decreases as altitude changes. a) true b) false 9) Satellites in a low circular orbit float within this layer. a) thermosphere b) mesosphere c) exosphere 10) It is where the ions with electrical charges in this layer which can reflect low- frequency radio waves. a) troposphere b) stratosphere c) thermosphere 11) Space objects attracted by the Earth’s gravity burn up in this layer. a) exosphere b) mesosphere c) stratosphere 12) It refers to how hot or cold the air is. a) air pressure b) air temperature c) air humidity 13) Land absorbs and radiates heat faster than water. a) True b) false 14) An instrument used to measure air humidity a) thermometer b) hygrometer c) hydrometer 15) It is the air conditions at a particular area and time. a) wind b) climate c) weather 16) It forms naturally and locally on the Earth’s surface. It does not last long and covers a small area. It coincides with heavy rain, strong winds, and lightning a) typhoon b) thunderstorm c) cyclone 17) It is the prediction of what weather and natural phenomena will be in a future time and a given location with meteorological methods. a) weather b) forecasting c) weather forecasting 18) A weather description that is based on the maximum temperature of the day and used only in summer  a) cold weather b) hot weather c) rainfall distribution 19) It is the result of the northeast monsoon moving toward Thailand. a) cold weather in the upper part of the country b) heavy rain all over the country c) heavy rain in the North 20) A cyclone that is formed in the continent of Australia a) Bagyo b) tornado c) willy-willy 21) What is the freezing point of water in Fahrenheit? a) 32 b) 100 c) 212 22) What is the boiling point of water in Fahrenheit? a) 100 b) 212 c) 273 23) It is a form of heat transfer that takes place when we place our hands near the hot pot and feel the heat? a) convection b) radiation c) conduction 24) In which atmospheric layer do space objects burn up? a) mesosphere b) stratosphere c) exosphere 25) Which of the following monsoon wind prevails over Thailand in summer? a) southwest monsoon b) northeast monsoon c) southeast monsoon

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