All questions
- Differentiate between Communication in Brazil and India
- Differentiate between. (a) Water transport in the Amazon and the Ganga river. The Amazon is navigable over a very long distance and is the main means of transport in its sparsely populated, forested basin, while the Ga... 1
- We rely on the sea route for international trade. We rely on sea routes for international trade because they are the cheapest way to carry large quantities of heavy and bulky goods over long... 1
- Development of transport is important for country's progress. Transport modes help is the movement of humans, animals and goods from one location to another. Transport enables social, economic and cultu... 1
- A dense network of railways has developed in the north Indian plains. The North Indian Plains are flat plain lands with a dense population. Due to agricultural development, many agro- based industries have deve... 1
- The waterways are not developed in Brazil. Most of the rivers in Brazil flow with high speed. The amount of discharge of many rivers is very huge. In Brazil, rigid topography is found... 1
- Eco-tourism is being developed more in Brazil Eco-tourism means responsible travel to natural areas without causing damage to the environment. Brazil has the largest number of vegetation... 1
- 4. Match the columns. ‘A’ Group ‘B’ Group (a) Trans-Amazonian (i) Tourist Place Highway (b) Road Transport (ii) Railway Station in India Answer: 1 – d 2 – c 3 – a 4 – b 2
- A plane leaves Brasilia at 11am on 31 December. The plane crosses 0° Meridian and reaches Vladivostok
- Which means of communication has expedited the field of communications? The development of technology has accelerated the communication process in the world. Internet and satellites are the harbingers of today’s... 1
- What are the difficulties in the develop ment of the railway system in Brazil's internal areas? The densely forested lands of Amazon River Basin and the swampy lands have limited the development of railways in Brazil. Large pockets of B... 1
- Which factors attract more tourists in Brazil? The factors which attract more tourists in Brazil are: Clean, white sand beaches Attractive seacoasts Beautiful islands Beautiful orchards D... 1
- State whether right or wrong with reasons. (a) The future of tourism is bright in India due to its natural diversity. a. The future of tourism is bright in India due to its natural diversity. Answer: Right. b. Tourism is an invisible trade. Answer: Right. c.... 1
- If the height of a satellite completing one revolution around the earth in T seconds is h1 meter, Time period of the satellite is given as T = frac2π(R+h)^(3/2)√(GM) When the height of the satellite is h₁, it takes T time to revolve aroun... 1
- How much time a satellite in an orbit at height 35780 km above earth’s surface would take Given: Height of the satellite, h = 35780 km = 35.78×10⁶m Let the original mass of Earth be M. Then its new mass M’ will be 4M. ∴ M’= 4×6×10... 1
- If mass of a planet is eight times the mass of the earth and its radius is twice the radius of the earth, what will be the escape velocity for that planet? Correct answer is 22.4 km/s https://youtu.be/JewcniYEVsY 1
- Complete the following table IRNSS Weather study & predict Earth’s observation read in image 1
- Why it is beneficial to use satellite launch vehicles made of more than one stage? The major portion of weight in satellite launch vehicles is contributed by fuel. Thus, vehicles have to carry a large weight of fuel during... 1
- What is meant by satellite launch vehicles? Explain a satellite launch vehicle developed by ISRO with the help of a schematic diagram. A rocket used to carry an artificial satellite to a desired height above the earth's surface and then project it with a proper velocity so t... 1
- Why are geostationary satellites not useful for studies of polar regions? The geostationary satellites orbit above the equator or in equator plane, these satellites can’t fly over the polar regions. Also these sate... 1
- What is meant by the orbit of a satellite? On what basis and how are the orbits of artificial satellites classified? Orbit of a satellite Is its path around the earth. Orbits of artificial satellites can be classified on various basis. On the basis of the a... 1
- What is meant by an artificial satellite? How are the satellites classified based on their functions? A man made object revolving around the earth or any other planet in a fixed orbit is known as artificial satellites. Based on their function... 1
- State with reasons whether the following sentences are true or false a. If a spacecraft has to be sent away from A) If a spacecraft has to be sent away from the influence of earth’s gravitational field, its velocity must be less than the escape velocity... 2
- Fill in the blanks and explain the statements with reasoning: a. If the height of the orbit of a satellite from the earth surface Answer:1: If the height of the orbit of a satellite from the earth surface is increased, the tangential velocity of the satellite will decre... 1