World geography Quiz 6 September 22, 2018 September 22, 2018 Please enter your email: 1. Comets are celestial bodies moving about the solar system in elliptical or hyperbolic orbits, usually accompanied by a shining tail elliptical orbits usually accompanied by a long shining tail hyperbolic orbit always accompanied by a shining head hyperbolic orbit without projecting any tail or head 2. The time required by moonlight to reach the earth is : 2.3 sec 2 sec 1.3 sec 1 sec 3. The constellations of stars appear at different positions in the sky at different times during night mainly: because of optical illusion because earth revolves round the sun because celestial bodies are changing their positions all the time because earth rotates about its axis 4. While Venus is seen only for one to two hours either after sunset or before sunrise, Jupiter is seen for the whole night whenever it is visible in the sky. The reason for this is that: [CDS 2000] the orbit of Venus is inside the earth’s orbit whereas the orbit of Jupiter lies outside the orbit of the earth Venus reflects lesser amount of sunlight than Jupiter Venus is much closer to the earth than Jupiter Venus is much smaller than Jupiter 5. If there is no Sun, the colour of the sky would be: yellow orange blue black 6. The ‘Solar Corona’ mainly consists of: ice cosmic rays gases molten lava 7. The strongest evidence that comets are members of our solar system comes from: the shape of their orbits the shape and length of their tails their composition their effect on the lives of man 8. The radiant energy of the sun is transmitted in the form of: long waves short waves particles none of these 9. Foucault experiment is proof of which one of the following? Revolution of Earth Rotation of Moon Rotation of Earth Revolution of Moon 10. The Saturn rings were discovered by: Galileo Newton none of these Copernicus Loading … Question 1 of 10 Share this:WhatsAppTelegramTweet Related