Available Answers

1. 1.

   Write the names of the following, using the hints given:

   1. It does not have light of its own 
   2. Its outermost hard layer is called crust
   3. It looks small due to its distance from the earth
   4. The objects which give out light
2. 2.

   Match the following.

   Column I	Column II
   1. Tide	(a) Apollo 11
   2. Lunar Month	(b) bright portions of the moon
   3. Neil Armstrong	(c) 29.5 days cycle
   4. Phase of the moon	(d) Gravitational pull of the sun and moon

    

3. 3.

   Fill in the blanks

   1. During __________ eclipse, the moon comes between the sun and the earth.
   2. In eclipse of the __________, earth comes between the __________ and __________.
   3. An eclipse is a __________.
   4. Solar eclipse takes place on a __________.
4. 4.

   Name the following.

   1. First man-made satellite
   2. India's artificial satellite
   3. A use of artificial satellite
5. 5.

   Multiple Choice Questions

   1. A solar eclipse occurs only when
      1. the moon is between the earth and the sun
      2. the earth is between the moon and the sun
      3. the sun is between the earth and the moon
      4. none of the above
   2. Formation of shadows depends upon
      1. thee source of light
      2. the distance between the object and the source of light
      3. the size of the object
      4. all of the above
   3. Artificial satellites are used for
      1. weather forecasting
      2. communication purposes
      3. astronomical purposes
      4. all of the above
   4. The first satellite to be launched by Russian scientists was
      1. Sputnik I
      2. Aryabhatta
      3. IRS - 1B
      4. Apple
   5. Tides are caused by
      1. the gravitational pull of the moon
      2. the spinning of the earth
      3. revolution of the earth
      4. both (a) and (b)
6. 6.

   Fill in the blanks.

   1. A lunar eclipse occurs when the shadow of the __________ falls on the __________.
   2. Tides occur about every __________ hours or so.
   3. A __________ eclipse occurs only on a new moon day.
   4. __________ was the first Indian satellite launched in 1975.
   5. A shadow is formed when the path of light is blocked by an __________ object.