Air Video Lecture | Social Studies & Pedagogy Paper 2 for CTET & TET Exams - CTET & State TET
FAQs on Air Video Lecture - Social Studies & Pedagogy Paper 2 for CTET & TET Exams - CTET & State TET
| 1. What is the composition of air in the Earth's atmosphere? |  |
Ans. The air in the Earth's atmosphere is primarily composed of nitrogen (about 78%), oxygen (about 21%), argon (approximately 0.93%), carbon dioxide (around 0.04%), and trace amounts of other gases including neon, helium, and methane.
| 2. How does air pressure change with altitude? | |
Ans. Air pressure decreases with altitude. As you go higher in the atmosphere, there are fewer air molecules above you, resulting in lower pressure. For example, at sea level, the average air pressure is about 1013 hPa (hectopascals), while at 5,000 meters, it drops significantly.
| 3. What role does air play in weather and climate? | |
Ans. Air is essential for weather and climate as it contains water vapor, which contributes to cloud formation and precipitation. Additionally, the movement of air masses affects temperature, humidity, and wind patterns, all of which are critical components of weather systems.
| 4. How does air pollution impact the environment and health? | |
Ans. Air pollution can have severe impacts on both the environment and human health. It can lead to respiratory diseases, cardiovascular problems, and other health issues. Environmentally, it can cause acid rain, harm wildlife, and contribute to climate change by increasing greenhouse gas concentrations.
| 5. What are the different layers of the atmosphere and their characteristics? | |
Ans. The atmosphere is divided into several layers: the troposphere (where weather occurs), stratosphere (contains the ozone layer), mesosphere (where temperatures decrease with altitude), thermosphere (where temperatures rise significantly), and exosphere (the outermost layer, gradually fading into space). Each layer has distinct temperature gradients and compositions.
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