Question

Textbook L AND POI SOCIAL SC 1 THE EARTH IN THE SOLAR SYSTEM Let's Do How wonderful it is to watch the sky after sunset! One would first notice one or two bright dots shining in the sky. Soon you would see the number increasing. Su meed: 1 och You cannot count them any more. The whole sky is 1 sheet of plain paper. pencil and a filled with tiny shining objects - some are bright others neede dim. It seems as if the sky is studded with diamonds. Step: They all appear to be twinkling. But if you look at 1. Place the torch the centre them carefully you will notice that some of them do of the paper with a glass front touching the paper not twinkle as others do. They simply glow without 2 No draw a circle around any flicker just as the moon shines. the torch Along with these bright objects, you may also see 3. Periorate the paper with the the moon on most of the days. It may, however, appear nced within the cucci anca at different times, in different shapes and at different 4. Now place the perforated positions. You can see the full moon only once in about cindle part of the paper a month's time. It is Full moon night or Poornia. A the glass front and wrap the fortnight later, you cannot see it at all. It is a New paper around the torch with a rubber band moon night or Amavasya On this day, you can watch 5. Take care that the sch the night sky best, provided it is a clear night. of the torch is not covered Do you wonder why can't we see the moon and all 6. In a dark room stand at those bright tiny objects during day time? It is because some distance facing a the very bright light of the sun does not allow us to see plain wall. Switch off all other lights. Now ash the all these bright objects of the night sky. torchlight on the wall. Yo The sun, the moon and all those objects shining in will see mumerous dots of the night sky are called celestial bodies. light on the wall lie stars Some celestial bodies are very big and hot. They shine in the night 7. Switch on all the ghts in are made up of gases. They have their own heat and the room. An dous of the light, which they emit in large amounts. These celestial l be almost invisible bodies are called stars. The sun is a star. S. You may now compare the Countless twinkling stars in the night sky are situation with what hagues similar to the sun. But we do not feel their heat or to the bright objects of the night sky after the sun rises light, and they look so tiny because they are very very far in the morning from us.​

Answer 1

Answer:

the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.