Welcome to your Science Quiz 7
1.
Electrically charged particles from space travelling at speeds of several hundred km/sec can severely harm living beings if they reach the surface of the Earth. What prevents them from reaching the surface of the Earth? [2012]
2.
Satellites used for telecommunication relay are kept in a geostationary orbit. A satellite is said to be in such an orbit when: [2011]
- The orbit is geosynchronous.
- The orbit is circular.
- The orbit lies in the plane of the Earth’s equator.
- The orbit is at an altitude of 22,236.
3.
An artificial satellite orbiting around the Earth does not fall down. This is so because the attraction of Earth: [2011]
4.
What is the difference between asteroids and comets? [2011]
- Asteroids are small rocky planetoids, while comets are formed of frozen gases held together by rocky and metallic material.
- Asteroids are found mostly between the orbits of Jupiter and Mars, while comets are found mostly between Venus and Mercury.
- Comets show a perceptible glowing tail, while asteroids do not.
5.
In the context of space technology, what is “Bhuvan”, recently in the news? [2010]
6.
Consider the following statements: The satellite Oceansat – 2 launched by India helps in: [2010]
- Estimating the water vapour content in the atmosphere.
- Predicting the onset of monsoons.
- Monitoring the pollution of coastal waters.
Which of the statements given above is/are correct?
7.
Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die? [2009]
8.
Cape Canaveral, the site from which space shuttles are launched is located on the coast of: [2009]
9.
Which one of the following planets has the largest number of natural satellites or moons? [2009]
10.
India has recently landed its Moon Impact Probe on the Moon. Among the following countries, which one landed such probe on the Moon earlier? [2009]
