Available Answers

1. 1.

   Multiple choice questions:

   1. 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
   2. Which of the following is soluble in water:
      1. chalk
      2. kerosene
      3. nitrogen
      4. hydrogen
   3. An example of the third class lever is a:
      1. see-saw
      2. broom
      3. ice tongs
      4. nut cracker
   4. The sloping roads in hills are example of:
      1. lever
      2. inclined planes
      3. wedge
      4. screw
2. 2.

   Fill in the blanks:

   1. ________________ is the natural satellite of the earth.
   2. A ________________ eclipse occurs when the earth is between the sun and the moon.
   3. A ________________ is used to lift loads.
   4. There are ________________ types of simple machines.
   5. Gases like oxygen and carbon dioxide ________________ in water.
3. 3.

   What is a physical change?
4. 4.

   Why are solids hard ?
5. 5.

   What is an inclined plane? How is it useful to us?