Available Answers

1. 1.

   Choose the correct answer.

   1. The closest neighbour of the earth in space is the
      1. Sun
      2. Mercury
      3. Moon
      4. Venus
   2. The moon shines because of
      1. its own light and heat
      2. the light of the sun reflected by it
      3. the gases present on its atmosphere
      4. the craters on its surface
   3. the gravity of the moon is
      1. equal to the gravity of the earth
      2. less than the gravity of the earth
      3. more than the gravity of the earth
      4. zero
   4. One cannot hear any sound on the moon because of
      1. absence of atmosphere
      2. presence of atmosphere
      3. presence of craters
      4. absence of water on the moon
   5. Eclipses occur due to the
      1. rotation of the earth only
      2. revolution of the moon only
      3. revolution of the earth only
      4. revolution of the earth and the moon both
   6. The craters created on the surface of the moon are due to the hitting of
      1. planets
      2. meteorites
      3. stones
      4. rocks
   7. The first satellite launched by India was
      1. Apple
      2. Rohini
      3. Insat 1-B
      4. Aryabhata
   8. the spacecraft that carried a living creature into the space for the first time was
      1. Apollo 11
      2. Voyager-II
      3. Sputnik 2
      4. Mariner
2. 2.

   Which is the first heavenly body probed by man?

3. 3.

   What are the changing shapes of the moon called?
4. 4.

   What occurs when the sun, the earth and the moon are in straight line?
5. 5.

   Why is there no life on the moon?
6. 6.

   What are tides?