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The Solar Family:
Let us now take you on a journey across the universe. We begin from our planet EQrth. It is our home. The Earth is active, lush and fertile. It is a place of blue skies, vast *oceans, cool forests, a world full of life. Its surface is cloaked by an atmosphere in which 'we can breathe, and which keeps the Earth's temperature quite-constant. It spins or rotates on its axis and revolves around the Sun, completing one orbit in one year. The Earth is not alone. It has a companion on its travels, the Moon which orbits the Earth once in 27.33 days. But the Moon is airless, waterless and lifeless; it is a dead world. From the Moon, the Earth appears as a beautiful bluish-white planet. The Earth is not the only planet orbiting the Sun. There are eight other planets that orbit the Sun. The nine planets and their satellites togethkr with the Sun and many asteroids and comets make a family, the Solar System. The planets arc diverse in size, ranging from the giant Jupiter, efeven times the size of Earth, down to tiny Pluto, less than half the size of our planet. Each planet's distance from the Sun is different, Mercury being the nearest and Pluto, the farthest. They are all different from each other in many respects. But let's not dwell on the Solar
Adulteration of food: We live in a society where some times foods and even medicines are sold in an adulterated form by mixing it with other materials, which are neither food
Compute for 3 H the mean energy per nuclear disintegration, Δ. The SI unit for Δ is kg Gy Bq -1 s -1 identical with J Bq -1 S -1 . The effective half-life for tritium in body w
Observing the phases of the moon Over the time of a lunar month have the children make nightly observations and illustrate drawings of the moon. Start at new moon and continue
essay on friction is a necessary evil
a. How many ion pairs are produced in 1 cm 3 of air during an exposure of 100 mR? The density of air at STP is ρ = 1:293kg m -3 . What is the absorded dose to air? b. An thin w
Question 1 Describe all the five scenarios as recommended by Mashelkar's task force for biopharmaceuticals Question 2 Write in detail about scientific review required in US f
how do i make a box being pulled up a rough incline by a rope connected to a pulley
Mercury: Mercury, the planet nearest to the Sun, has long remained a mysterious body. Because .of the Sun's glare, it is difficult to see it clearly all the mare so becau
Assembling First Aid Box : Your Counsellor will show you the contents of the first aid box available at the Study Centre. You observe the contents. As part of this activity, yo
Some Features of the Forests: Forests are the most widespread stretches of vegetation, harbouring diverse kinds of life forms. They are dominated by trees. Besides trees, f
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