Fill in the Blank: Oxygen occupies _____ % of a volume of air near the Earth\'s

Question

Fill in the Blank: Oxygen occupies _____ % of a volume of air near the Earth's surface. The basis for dividing the Earth's atmosphere into layers is the change of _____ with altitude. The coldest atmospheric layer is the _____. During January, it is winter in the Northern Hemisphere and _____ in the Southern Hemisphere. The Sun emits maximum radiation in the _____ portion of the spectrum, while the Earth emits maximum radiation at _____ wavelengths. Air that sinks warms by _____. Lines on a weather map that connect points with equal temperatures are called _____. The amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius is the _____ heat. On a clear, calm night, the ground and air above cool mainly by this process: _____ _____. _____ forms when water vapour changes directly into ice without becoming a liquid first. There air is _____ when the number of liquid water molecules that evaporate is exactly balanced by the number of water vapour molecules that condense. _____ _____ can be described as the percent of water vapour in the air compared to that required for saturation. Water droplets that exist at temperatures below freezing are said to be _____. If an air parcel is given a small push upward and it continues to move upward on its own accord, the atmosphere is said to be _____. Cold rain that falls through a rather shallow layer of subfreezing air and freezes upon striking a surface is called _____ _____.

Explanation / Answer

Oxygen occupies 21 % of a volume of air near the Earth's surface,. The basis of dividing the Earth's atmosphere into layers is the change of temperature with altitude. The coldest atmospheric layer is the Mesosphere. During january it is winter in northern hemesphere and summer in southern hemesphere. The Sun emmits maximum radiation in the visible portion of the spectrum, whikle the Earth emmits the maximum radiation at thermal infrared (4 to 100 micrometer) wavelengths. Air that sinks warm by radiation. Lines on a weather map that connect points with equal temprature are called isotherm. The amount of heat needed to raise the temperature of one gram of a substance by one degree Celsius is the Specific heat. On a clear, calm night, the groung and the air above cool main ly due to this process: surface radiation. Snow forms when water vapour changes directly into ice without becoming a liquid first. The air is saturated when the number of liquid water molecules that evaporate is exactly balanced by the number of water vapour molecules that condence. Relative Humidity can be described as the percent of water vapour in trhe air compared to that required for saturation. Water droplets that exist at temperatures below freezing are said to be Supercooled. If an air parcel is given a small push upward and it continues to move upward on its own accord, the atmosphere is said to be unstable. Cold rain that falls through a rather shallow layer of sub freezing air and freezes upon striking a surface is called freezing rain.

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