Q- How is our atmosphere different from the atmosphere on Venus and Mars?
Answer- The atmosphere of planet Earth is made composed of several gases such as Nitrogen, Oxygen, Carbon dioxide, carbon monoxide, etc. which makes life possible on Earth whereas in the case of the atmosphere of planets such as Mars and Venus. The atmosphere of Mars and Venus is composed of 98 percent carbon dioxide which makes the atmosphere enough polluted so that it is not possible to survive on planets like Venus and Mars.
Important Questions for Class 9
- Why hills are cooler during summer
- Describe the journey of the river Ganga in India and which rivers join it on the route
This is also the reason why humans cannot survive on planets such as Mars and Venus. Because the atmosphere of Mars and Venus has 98 percent carbon dioxide whereas on Earth life is possible only because the atmosphere of Earth has 75 percent Nitrogen, 20.92 percent Oxygen, and 4 percent is made up of other gases such as carbon dioxide, carbon mono-oxide, argon, water vapor, etc.
We hope that now after reading the answer to the question (how is our atmosphere different from the atmosphere on venus and mars) you understood how is our atmosphere different from the atmosphere on venus and mars.
If yes so we would like to suggest to you some of the other articles on our website that are also, especially for class 9th students.
The above answer is based on how is our atmosphere different from the atmosphere on venus and mars? So, if you are not getting the answer to the above question.
Then, we have something that will help you a lot. In the paragraph given below, we are going to tell you about the atmosphere of Earth which will help you to remember this answer easily.
Atmosphere of Earth
The atmosphere of Earth is a kind of layer of several gases or a kind of layer that is composed of various gases that all are commonly referred to as air those gases are retained by the gravity of Earth and it is present in the surroundings of the planet Earth. These gases combine to form a planetary atmosphere.
The Earth’s atmosphere protects life on Earth by creating pressure for liquid water to exist on the Earth’s surface, absorbing ultraviolet solar radiation, warming the surface by retaining heat (greenhouse effect), and reducing extreme temperatures between day and night.
Composition of Earth’s Atmosphere
On the basis of the volume of gases, in the atmosphere of Earth, all the dry air contains 78.09 percentage of nitrogen, 20.95 percentage of oxygen, 0.93 percentage of argon gas, 0.04 percentage of carbon dioxide gas, and small amounts of all other types of gases.
Earth’s atmosphere contains a variable amount or the amount that varies of water vapor that is on average around 1 percent at sea level and 0.4 percent over the entire atmosphere.
The composition of three major components that are air, temperature, and atmospheric pressure varies with altitude. And also the air suitable for photosynthesis by land plants and respiration by land animals is only found in the terrestrial troposphere of atmospheres.
The three main constituents of the Earth’s atmosphere are nitrogen, oxygen, and argon. Water vapor represents about 0.25% of the mass of the atmosphere.
The concentration of water vapor (a greenhouse gas) varies widely from about 10 ppm by volume in colder parts of the atmosphere to up to 5% by volume in warm air masses and humid, and the concentrations of other atmospheric gases are generally reported in terms of dry air (without water vapor).
The remaining gases are often referred to as trace gases, among which are greenhouse gases, mainly carbon dioxide, methane, nitrous oxide, and ozone. Besides argon, already mentioned, other rare gases, neon, helium, krypton, and xenon are also present. Filtered air contains traces of many other chemical compounds.
Many naturally occurring substances can be present in small locally and seasonally varying amounts as aerosols in an unfiltered air sample, including dust of mineral and organic composition, pollen, spores, spray, and volcanic ash. Various industrial pollutants can be present as gases or aerosols.
Some examples of industrial pollutants are chlorine (elemental or in compounds), fluorinated compounds, and elemental mercury vapor. Sulfur compounds such as hydrogen sulfide and sulfur dioxide (SO2) can come from natural sources or industrial air pollution.
Atmosphere
Earth’s atmosphere has changed a lot since its formation as a mostly hydrogen atmosphere, and has changed drastically on several occasions – for example, the great oxidation event 2.4 billion years ago, has dramatically increased oxygen in the atmosphere, from virtually no oxygen to levels closer to today.
Human beings have contributed to several significant changes in atmospheric composition through air pollution, especially since the beginning of industrialization leading to rapid environmental changes such as ozone depletion and global warming.
The main reason behind ozone depletion and global warming is human beings. All types of pollution in our environment are caused due to human activities.
Earth’s atmosphere has a very huge mass that is about 5.15 × 1018 kg. Three-quarters of which is about 11 km from the surface of Earth. The atmosphere becomes thinner and thinner with increasing altitude, with no defined boundary between the atmosphere and outer space.
The Kármán Line is 100 km which is about 62 mi or is about 1.57% of the radius of planet Earth. It is often used as the boundary between the atmosphere and outer space.
Atmospheric effects become noticeable or become enough intense so that they can be noticed easily during atmospheric reentry of spacecraft when they are at an altitude of about 120 km. There are several layers that can be distinguished in Earth’s atmosphere, these all are based on several crucial characteristics such as temperature and composition.
The study of the Earth’s atmosphere and its processes is called atmospheric science (aerology) and includes several sub-fields, such as climatology and atmospheric physics. Among the first pioneers in the field, let us quote Léon Teisserenc de Bort and Richard Assmann.