Earth, Solar System , Planets –Important Points The Sun is 330,330 times larger than the earth. The order of the planets, starting closest to the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune. There are 1040 islands around Britain, one of which is the smallest island in the world: Bishop’s Rock. … Read more
Physics Stars and the Solar System 1-Sundial -A Clock based on shadows of an object due to Sunlight . 2-Celestial Bodies -The heavenly bodies are known as celestial bodies. 3-Local noon -The time when the shortest shadow occurs is called the local noon time at that place. 4-Dakshinayanam – When the Sun looks … Read more
Geography SOLAR SYSTEM 1-Our solar system consists of the sun (the star), planets, satellites, millions of smaller bodies like asteroids, meteorites and comets and huge quantity of dust-grains and gases. 2-Out of the nine planets, Mercury, Venus, Earth and Mars are called as the inner planets as they lie between … Read more
Sun -Planets -Comets – Important Points/Facts 1-Temperature = 6000 C on surface and 16 million C in core 2-Density = 1.41 times that of water 3-Age = 4.6 billion years 4-Diameter = 13,91,785 km (~1.3 million km) 5-Period of rotation = 25 days 9 hrs 6-Speed of rotation = 7179.73 km/hr (Earth’s rotational velocity = … Read more