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....
Chapter-Locating Places on the Earth
Class - 6
Subject-Social Science
In-Text Question Answer
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1. What is a map, and how do we use it? What are its main components?
- Map: A map is a drawing that shows the location of places on a flat surface, like a piece of paper.
- Use: It helps us find directions and locations of cities, roads, rivers, etc.
- Main Components:
- Distance: The scale tells us the real distance between places on the map.
- Direction: Maps show cardinal directions (North, South, East, West) to help us navigate.
- Symbols: Small drawings or signs represent important places like roads, rivers, and schools.
2. What are coordinates, and how can latitude and longitude mark locations?
- Coordinates: They are like an address for any place on Earth, using two numbers: latitude and longitude.
- Latitude: Imaginary lines running east to west, parallel to the Equator. For example, 29°N for Delhi.
- Longitude: Imaginary lines running from the North Pole to the South Pole. For example, 77°E for Delhi.
- Use: Together, they pinpoint the exact spot of a place on Earth, like coordinates on a chessboard.
3. How are local time and standard time related to longitude?
- Local time depends on the position of the Sun and longitude. Each 15° longitude difference equals a 1-hour time difference.
- Standard Time: Countries use a single time for the whole country, based on one longitude. For India, it is 5 hours and 30 minutes ahead of GMT, based on 82.5°E longitude.
4. Questions Based on the Map in Fig. 1.1 (Page 8)
- Mark the hospital: Check the map on page 8 for the location.
- Blue areas: These represent water bodies, like rivers or lakes.
- Which is farther from the railway station?
- Compare the distance of the school, Nagar Panchayat, and public garden from the station on the map.
5. Drawing a School’s Playground
- Steps:
- Draw a rectangle of 4 cm by 3 cm (scale: 1 cm = 10 m).
- Use a ruler for precision.
- Diagonal Measurement:
- Diagonal = 5 cm.
- Real length of diagonal = 50 m (since 1 cm = 10 m).
6. True or False Statements About the Map of the Small City
- The market is north of the hospital: False
- The museum is southeast of the bank: False
- The railway station is northwest of the hospital: True
- The lake is northwest of the apartment blocks: False
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