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Visual Worksheet: The Atmosphere | Footprints Class 7: Book Solutions, Notes & Worksheets PDF Download

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FAQs on Visual Worksheet: The Atmosphere - Footprints Class 7: Book Solutions, Notes & Worksheets

1. What are the main layers of the Earth's atmosphere?
Ans. The Earth's atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. The troposphere is the lowest layer where weather occurs, followed by the stratosphere which contains the ozone layer. The mesosphere is where meteors burn up, the thermosphere is characterized by high temperatures, and the exosphere is the outermost layer where the atmosphere transitions into space.
2. How does the atmosphere protect life on Earth?
Ans. The atmosphere protects life on Earth in several ways. It filters harmful ultraviolet (UV) radiation from the sun through the ozone layer, regulates temperature through greenhouse gases to maintain a suitable climate, and provides essential gases such as oxygen for respiration and carbon dioxide for photosynthesis.
3. What is the significance of the ozone layer in the atmosphere?
Ans. The ozone layer, located in the stratosphere, is significant because it absorbs the majority of the sun's harmful UV radiation, which can cause skin cancer and cataracts in humans, as well as damage to ecosystems. Protecting the ozone layer is crucial for maintaining a healthy environment.
4. How do human activities impact the atmosphere?
Ans. Human activities, such as burning fossil fuels, deforestation, and industrial processes, contribute to air pollution and the increase of greenhouse gases like carbon dioxide and methane in the atmosphere. This leads to climate change, global warming, and various health problems related to air quality.
5. What role does the atmosphere play in weather and climate?
Ans. The atmosphere plays a crucial role in weather and climate by facilitating the movement of air masses, moisture, and heat around the planet. It is responsible for the formation of clouds, precipitation, wind patterns, and temperature variations, all of which are essential components of weather systems and climate patterns.
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