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Infographics: Layers of the Atmosphere | Science Class 5

The document Infographics: Layers of the Atmosphere | Science Class 5 is a part of the Class 5 Course Science Class 5.
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FAQs on Infographics: Layers of the Atmosphere - Science Class 5

1. What are the main layers of the atmosphere?
Ans. The atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has distinct characteristics, such as temperature, composition, and density.
2. How does the temperature change in the different layers of the atmosphere?
Ans. In the troposphere, temperature decreases with altitude. In the stratosphere, temperature increases due to ozone absorption of UV radiation. The mesosphere sees temperatures drop again, while the thermosphere experiences a rise in temperature due to solar activity. The exosphere has very high temperatures but low heat content.
3. What is the significance of the ozone layer located in the stratosphere?
Ans. The ozone layer is crucial for life on Earth as it absorbs the majority of the sun's harmful ultraviolet (UV) radiation. This protective layer helps prevent skin cancer, cataracts, and other health issues, as well as protecting ecosystems.
4. At what altitude does the troposphere end, and what are its characteristics?
Ans. The troposphere extends from the Earth's surface up to about 8 to 15 kilometers (5 to 9 miles) in altitude, depending on the location. It contains most of the atmosphere's mass, weather phenomena, and is characterized by a decrease in temperature with altitude.
5. How does human activity impact the layers of the atmosphere?
Ans. Human activities, such as burning fossil fuels and using certain chemicals, can lead to pollution and depletion of the ozone layer. These actions contribute to climate change, global warming, and increased UV radiation reaching the Earth's surface, which poses risks to health and the environment.
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