Balbharati Class 5 Environmental Studies Part 1 Solutions Chapter 1 Our Earth and Our Solar System
Welcome to NCTB Solutions. Here with this post we are going to help Maharashtra State board 5th class students by providing Balbharati Class 5 Environmental Studies part 1 Solutions for Chapter 1, Our Earth and Our Solar System. Here students can easily find all the answers for the questions in Our Earth and Our Solar System. Also our Expert Environmental Studies Teacher’s solved all the question answer with easily understandable language with proper guidance so that all the students can understand easily. Here on this post students will get chapter 1 Our Earth and Our Solar System solutions. Here all the Question Answer are based on Balbharati latest syllabus. Here all the question and answer are based on Maharashtra State Board latest syllabus.
Formation of State of Maharashtra Exercise question Solutions :
Question no – (2)
Answer :
(1) The enormous mass and gravitational power of the sun holds the planets in their orbits. With the sudden disappearance of the sun, the earth would fly away into space in a straight line. After eight minutes, the earth would subside into darkness, as it takes eight minutes for sunlight to come to earth. Moon would vanish as it does not have light of it’s own. Plants would die, as without sunlight it would be impossible for the plants to carry out the process of photosynthesis. The day and night cycle would come to an end. If there is no sunlight, the process of water cycle would cease, as there will be no water evaporation and clouds, so as a result there will be no rainfall. Seasonal changes will come to a halt, as there will be only one season. The earth’s temperature would fall below 0° degrees Fahrenheit within a week and dripping to negative hundred Fahrenheit within a period of one year, where it would be impossible for us to live. Consequently, ocean surfaces would freeze. Only the germs would survive, as it does not need photosynthesis and this will lead to wide spread of various diseases. Therefore, without the sun it would be impossible for the human beings to exist.
(2) The address will be like as follows :
Megha Saha
I live on planet earth,
Baithakkhana road ,
Kolkata -700009 ,
State of West Bengal,
Republic of India,
Continent of Asia,
Solar system.
Question no – (4)
Answer :
(a) Here, correct answer is Moon.
Explanation : The Moon is regarded as the satellite of the earth and it revolves round the earth. The moon reflects the light of the sun, as it have no light of it’s own. The moon is closer to earth. The moon is visible in different shapes.
(b) Here, Sun is the correct answer.
Explanation : In our Solar system the sun is the largest star. The sun consists a mass of hot plasma and it’s shape is spherical. The existence of the sun is necessary for our planet earth as it provides us the energy which is essential for the survival of life.
(c) Satellite is the correct answer.
Explanation : A Satellite is considered as a small object that circles around a larger object. The entire path that it follows is termed an orbit.
(d) Here, Planet is the correct answer.
Explanation : Planets refers to those heavenly bodies that do not twinkle. Planets get light that are reflected from the stars and they do not have their own light.
(e) Here, the correct answer is Earth.
Explanation : We live in the planet Earth. In our Solar system, earth is the third planet. Among the eight planets, Earth is the only planet where there is existence of life.
(f) Sun is the correct answer.
Explanation : Sun acts as the most significant source of energy for life on the planet Earth. It is from the sun that every living beings gets their energy.
Question no – (5)
Answer :
(a) The purpose of rockets used in space travel :
People always have a keen interest about the heavenly bodies in the sky. They always have a desire to reach them. In order to send some items from earth into space, it has to be given power against the gravitational force. For this purpose, Rocket technology or space launch technology is used. The rockets that are extremely powerful are used to send a spacecraft into space. For the purpose of launching spacecraft that weighs thousands of tons, an enormous quantity of fuel is burnt in rocket. For this reason, rockets are used for launching the spacecraft in space travel.
(b) Information provided by man-made satellite :
Man – made satellite gives relevant information on agriculture, environment, weather forecasting, maps making and seeking for water and minerals from earth. They are also used for the purpose of telecommunication. For several years they can persist on space.
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