Available Answers

1. 1.

   Fill in the blanks by choosing the correct answer from the options given below:

   1. Water exists in nature in all the __________ states of matter.
   2. __________ metamorphic rocks are formed from sandstone.
   3. The distance between the earth and its moon is __________ km.
   4. __________ was the first spacecraft to land on the moon.
   5. Gravitational force was discovered by __________.
2. 2.

   Match the following:

   Column A	Column B
   1. Air pollution	a. Deafness
   2. Noise pollution	b. Jaundice
   3. Global warming	c. Asthma
   4. Water pollution	d. Greenhouse effect
   5. Volcanoes	e. Natural disaster

    

3. 3.

   State whether the following statements are true or false:

   1. Air pollution slows down the growth of plants.
   2. Tsunami waves can travel as high as 100 feet.
   3. Plants depend on animals for food.
   4. Acid rain can affect monuments and statues.
   5. Magnet attracts objects like towards them.
4. 4.

   Give one word for the following:

   1. Friction
   2. First type of lever
   3. Mechanical force
   4. Natural satellite of the earth.
   5. Third planet from the sun.
5. 5.

   Circle the odd one out:

   1. Radio, telephone, television signals, Aryabhatta
   2. Nail Armstrong, Edwin Aldine, Michael Collins, Albert Einstein
   3. Marble, Slate, Gneiss, Quartz.
   4. Granite, Basalt, pumice, marble
   5. Tilt of the earth's axis, revolution, seasons, day and night.
6. 6.

   Name the following:

   1. Big holes present on the surface of the moon.
   2. Day on which a solar eclipse can occur.
   3. Two planets which have more than one moon.
   4. Everything that has mass and occupies space.
   5. The temperature at which a gas changes into its liquid state.