Question

8. What is formed when water vapour condenses on dust particles in the air? A. Ozone. B. Dew. C. smoke. D. Fog 9. What does the windmill do? A. Generate electricity B Draws water from the well C. Runs flour Mills. D. all the above 10. Which gas do plants use to make the their food? B.Oxygen. B.Carbon dioxide C. Nitrogen_D.none II.TRUE OR FALSE 1. Plants consume oxygen for respiration. 2. Plants produce oxygen during the process of making their own food. 3. Air does not occupy space. 4. Air helps in the movement of sailing parachute and gliders. 5. Air does not help in the flight of birds and insects to fly. III. MATCH THE FOLLOWING 1. Oxygen - upper atmosphere 2. Ozone - Combustion 3. Argon - Flash photography 4. Neon - Electric bulbs 5. Xenon - Street light IV. FILL IN THE BLANKS ( pollination, weather, gases, life) 1.Air is mixture of many -gases 2.The water vapour in the air is responsible for all - -- conditions such as rain, snowfall and fog. 3. Air is important for supporting on our planet 4. Helps in the dispersal of seeds and ------- of flower.​

Answer 1

Answer:

MCQS

1.d Fog

2.a Generate electricity

3b. Carbon dioxide

TRUE FALSE -

1.True

2.True

3.False

4.True

5.False

MATCH THE FOLLOWING

1. Oxygen - Combustion

2. Ozone - upper atmosphere

3. Argon - Street light

4. Neon - Flash photography

5. Xenon - Electric bulbs

FILL IN THE BLANKS

1. gases

2. weather

3. life

4. pollination