Page 1 : BO Consort) a, , , , , , , Who are we? Solve the riddles and find out., 1. | have two circles in my name., 2. | twinkle in a popular nursery rhyme., , MeN, , The Earth is our home. It is made, , up of land and water. It is round in |, shape., , Hundreds of years ago, sailors had, , proved that the Earth is round. They, , started sailing from a certain point,, , sailed on and on and reached the, , same point from where they had, , started. This can happen only if the, path is circular. Photographs taken, on space trips show that the Earth is round., , American astronauts who landed on the moon in 1969 saw that the Earth, , appears round from the moon., However, the Earth appears flat to us. This is because what we see is only a, tiny part of a very big arc. The main neighbours of the Earth in space are the, , sun, moon and stars., , , , The Earth appears like a ball when, seen from the moon., , , , , , Teachers Please..., , , , ngiC be to the students to make them understand about the Earth better,, be A nat, - we, , Nature Magic-3

Page 2 : Let us learn about them., the Earth. It is a huge bal, , The Sun, , The sun is about 150 million kilometres away nO uch bigger than the Earth,, of hot gases. It gives us heat and light. The an jun, The sun's temperature, More than one million Earths could fit inside the sun., on its surface is about 54000°C., , The Sun's Family, , The sun is the head of a big family called th, of the solar system. Its family includes eight, , ar system. It is at the centre, , e sol, Venus, Earth, ©, , planets : Mercury,, , , , , , , Wie ta ey, , Neptune, , , , : Boles een, Mars, Jupiter, Saturn, Uranus and Neptune. All the eight planets revolve, around the sun ina fixed path. This path of a planet is called an orbit. The, Earth is the third planet in its distance from the sun., Planets do not have their own light. They reflect the light of the sun. They do, , not twinkle like the stars., , The Moon, , The moon is the Earth’s natural satellite. Just, as the Earth moves around the sun, the moon, moves around the Earth. There is no air or, water on the moon. It does not have light of, its own. It only reflects the light of the sun., , , , Surface of the Moon, , ¢ Nature Magic

Page 3 : Phases of the Moon, , The moon takes about 29.53 days to move, around the Earth. It changes its shape, every night. The changing of shapes is, called the phases of the moon. From, the Earth, we can see only those parts of, the moon that are lit by the sun., , As the moon revolves around the Earth,, its lighted part which faces the Earth also, changes. When the moon is between the, Earth and the sun, we do not see it at all., This is called the new moon or Amavasya. In two wee, full moon or Purnima. This is how the moon completes one cycle., , Tu, , , , Phases of the Moon., ks’ time, we see the, , The Stars, , The bright twinkling objects in the sky are, called stars. The stars are huge glowing, balls of fire. The sun is also a star. The, stars have light of their own. They give, light because they are very hot. There, are so many stars in the universe that we, , , , cannot count them at all. Stars, Some stars remain in groups and form patterns in the sky. These group of stars, are called constellations. There are 88 different constellations. Constellations, , move as a whole across the sky. Some famous constellations are, Ovrinn lan Cr 1 j € > ;, Orion, Leo, Scorpion and the, , Leo, , Great Bear Scorpion Orion, , Some Constellations, , Nature Magic-3, 1 ?

Page 4 : Indian Astronomers eygony the, Astronomers are people who study the sun, ae ‘ iad st, stars and the planets. About 1500 years ago, ¢ a Ree the, our country an astronomer named Aryabhata. 1° tates Aryabhata, first man to tell us that the Earth is round and that it ro! have its own light and, on its own axis. He also told us that the moon does not Nav, , it shines when sunlight falls on it. ; :, Varahamihirawas another astronomer who lived during ee ae eon, He was a scholar and wrote many books. Bhaskara, too, es waren how, He lived about 900 years ago. He discovered a method to, , planets move., , People in Space, , A person who goes into space is called an, , astronaut. Astronauts go into space in a, , spacecraft., , Neil Armstrong became the first person, , to land on the moon in 1969. Two other, , astronauts, Edwin Aldrin and Michael, , Collins also went to space with Neil, , Armstrong. They went to the moon in a, , spacecraft called Appollo-11., , * Rakesh Sharma became the first Indian to go into space in 1984., , * Kalpana Chawla became the first Indian woman to go into space in, 1997. She again went into space in 2009 but died when her space, shuttle crashed on the return journey., , * Sunita Williams became the second woman of Indian origin to go into, space in 2007. She stayed in space for a record 195 days, , , , , , , , , , Neil Armstrong, Edwin, Aldrin and Michael Collins, , , , , , GY A =, Rakesh Sharma Kalpana Chawla Sunita Willi, illiams, , @ Nature Magic-3

Page 5 : A. Tick (/) the correct option., 1. Which one is a huge ball of hot gases?, a, Sun b. Moon c. Earth, 2. How many planets are there in the solar system?, a. Six b. Eight c. Nine, 3. The moon takes days to move around the earth., , a. 30 by 29:58 oo 27., , B. Write True or False., 1. The Earth is round in shape., 2. The sun is smaller than the Earth., , , , , , , Planets do not have their own light., There is no air and water on the moon., , sun is also a big planet.