What is the main gas in the Earth's atmosphere? A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen 相关知识点: 试题来源: 解析 B。解析:地球大气中的主要气体是氮气。文章中有对大气成分的介绍。选项 A 氧气含量比氮气少。选项 C 二氧化碳是温室气体,但不是主要气体。选项 D 氢气在大气中的含量...
The Earth is surrounded by a layer of gas called the atmosphere. What is one of the important functions of the atmosphere? A. To make the Earth look blue from space. B. To protect the Earth from harmful radiation. C. To make it easier for people to travel by plane. D. To keep ...
What is the second most abundant gas in the Earth's atmosphere? A. Oxygen B. Nitrogen C. Carbon dioxide D. Argon 相关知识点: 试题来源: 解析 A。解析:地球大气中第二丰富的气体是氧气,占大气总量约21%。氮气是最丰富的,约占78%。二氧化碳含量较少,氩气含量也比氧气少。
The atmosphere protects the earth. What is the atmosphere made of? A. Gas and dust B. Water and fire C. Earth and moon D. Stars and gas 相关知识点: 试题来源: 解析 A。本题考查对大气层组成的了解,大气层由气体和尘埃组成。B 选项水和火不对;C 选项地球和月亮不对;D 选项星星和气体不...
Nitrogen gas makes up almost 80% of our atmosphere.What is the density of pure nitrogen gas,in g/L,at 12.50 degree and 126.63 kPa? 相关知识点: 试题来源: 解析 Greetings!Use the Gas Law:PV=nRT.Therefore,n=PV/(RT)=1.25atm( you gotta convert kPa to atm) *V (you don't have to...
1. Composing about 78 percent of the air at sea level, what is the most common gas in the Earth's atmosphere? 2. The Austrian monk Gregor Mendel's observations of what organism formed the basis for the science of genetics? 3. What term, which means the maximum absolute value of a ...
Exosphere: Highest Layer in the Atmosphere The exosphere is the outermost layer of Earth’s atmosphere, gradually transitioning into the vacuum of space. In the exosphere, the atmosphere becomes exceedingly thin, with gas molecules spread out over vast distances. Unlike the denser layers of the atm...
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Net zero is an ideal state where the amount of greenhouse gases released into the Earth’s atmosphere is equal to the amount removed. Emission removal and reduction through decarbonization efforts are needed to reach net zero. Digital generated image of solar panel system standing on circle with ...
The Earth's climate has been changing since day one. So yes, climate change is real and ongoing. The gases in our atmosphere and the climate conditions that result are NOT stable and are constantly changing over time. Many factors play into this including solar activity, volcanic activity, ...