Important Question Answers for the Class 9-Social Science Chapter 3- The Dynamic Atmosphere and Changing Climate ***************************** Very Short Answer Type Questions: 1. Which layer of the atmosphere contains the ozone layer? Answer: The stratosphere contains the ozone layer. 2. Name the gas that makes up the highest percentage of the atmosphere. Answer: Nitrogen makes up the highest percentage of the atmosphere. 3. Which element of weather is measured using a barometer? Answer: A barometer is used to measure atmospheric pressure . 4. What is the normal duration of the southwest monsoon in India? Answer: The southwest monsoon usually lasts from June to September . 5. Which season in India is known as the “hot weather season”? Answer: The summer season is known as the hot weather season. 6. Name the process by which water vapour turns into clouds. Answer: The process is called condensation . 7....
Passage Reading OR Case Study-Chapter 2-Diversity in the Living World-Class 6-Science ------------------------------------------------------------------------ Case Study 1: The Nature Walk and Observations It is a pleasant morning after yesterday’s refreshing rain. Dr. Raghu and Maniram Chacha have been invited to the school by the science teacher, Madam Sulekha, to facilitate an exciting nature walk. Dr. Raghu is a scientist at the nearby Research Laboratory, and Maniram Chacha is an expert in mimicking bird calls and identifying a variety of plants and animals. The objective of this walk is to experience the beauty and variety of plants and animals in nature. The students are excited and curious to learn from them. They carry a notebook, a pen, and a water bottle to record their observations. Questions and Answers: 1. Why did the students go on a nature walk? Answer: To observe and understand the variety of plants and animals in nature. 2. Who acc...