Telangana SCERT Class 9 Social Studies Chapter 1 Solution – Our Earth. Here in this post we provides Class 9 Social Studies Our Earth Telangana State Board Solution. Telangana State Board English Class IX Medium Students can download this Solution to Solve out Improve Your Learning Questions and Answers.
Telanagana State Board Class 9 Social Studies Chapter 1 Our Earth Solution:
1.) Look at the map of India in an Atlas and identify latitude and longitude for the following places:
Kanyakumari _______ and ______
Imphal _______ and ___________
Jaisalmer ____________ and ________
Pune _____________ and _____________
Patna _____________ and ________________
Answer:
Kanyakumari 8.088306 and 77.538452
Imphal 24.817011 and 93.936844
Jaisalmer 26.915749 and 70.908340
Pune 18.520430 and 73.856743
Patna 25.594095 and 85.137566
2.) Identify the words that match with Latitude and Longitude (parallel lines, vertical
lines, horizontal lines).
Answer: The terms that correspond to latitude are horizontal lines. The lines corresponding to the longitude are vertical lines.
3.) Look at the world map of time zones on the next page.
a) If you travel from New Delhi to Paris, which time zone are you moving to? ______
b) If you are travelling from Hyderabad to Tokyo, which time zone are you
moving to ? __________.
Answer: a) If you travel from New Delhi to Paris, which time zone are you moving to?
New Delhi is in time zone UTC +05:30. (i.e. the Indian Standard Time-IST). It means that when it will be 12 noon in UTC it will be 5:30 pm in New Delhi. Paris is in the time zone UTC +01:00 (i.e. the Central European Time Zone)
b) If you are travelling from Hyderabad to Tokyo, which time zone are you
moving to ? __________.
If you are travelling from Hyderabad to Tokyo it means you are travelling from India to Japan. This means you are in the Indian Standard Time Zone (IST) in the Japanese Standard Time Zone (JST). JST is 3.5 hours before IST.
4.) Why is it difficult to study the formation of the earth and its structure?
Answer: The earth has a stratified structure consisting of a core, mantle and crust. The crust and the top of the crust break down into large tectonic plates. They move too slowly on the mantle. The shape and structure of the earth are very difficult to study for the following reasons.
i) We will not look in the earth, because it is made of solid rock.
ii) Due to the high temperatures and pressures, we can only dig till 12 kilo meters in the ground.
iii) The crust is too thick to dig all the way through it.
5.) Read the paragraph under the heading “Internal structure of the earth” and answer the question.
How can you say that the earth is still very active?
Answer: It is noteworthy that the material sinks deep into the mantle through volcanoes and cracks on the seabed and cools to form the earth’s crust. In many parts of the globe, part of the earth’s crust enters the mantle and melts back. This constant process of crust formation and destruction explains the fact that our land is still very active. Earthquakes, volcanoes, subsoil and rising mountains caused by deep earthquakes are still changing.
6.) What is a grid and how does it help us?
Answer: A grid is a longitude and latitude grid drawn on a map. It helps us find places on the map and learn a lot from them.
7.) Differentiate between a) Local and Standard time (b) Equator and Prime meridian
Answer: The place on the same longitude has different standard times. The equator separates the northern and southern hemispheres. The equator is at 0 ° latitude. The main meridian runs through Greenwich and is at 0 ° longitude.
8.) If every state follows its local time then what problems would rise?
Answer: When each state follows local time, the following problems arise: (i) Travellers in different states have to change the clock frequently. (ii) Confusion and chaos occur at railways, planes, buses, etc.
9.) With the help of your teachers, find out the standard meridian of the given countries.
- Nepal 2. Pakistan 3. Bangladesh 4. England 5. Malasiya 6. Japan
- Answer: 1. Nepal – 86°20’E
- Pakistan – UTC+05:00
- Bangladesh – UTC+06:00
- England – 0 GREENWICH PRIME MERIDIAN (GMT)
- Malasiya – longitude 105 degree
- Japan – longitude 135 degrees east.
Thanks Google