Worksheet Solutions: Nature’s Treasures - 2 | Worksheets with Solutions for Class 6 PDF Download

Fill in the Blanks

(i) We cannot see air but we can              it.
Ans: feel 

(ii) The blanket of air surrounding the earth is known as               .
Ans: atmosphere

(iii)                 is essential for supporting life on the earth.
Ans: Oxygen

(iv) Air occupies            .
Ans: space

(v) Winnowing is more effective in               air.
Ans: moving

True or False

(i) Air is found everywhere.
Ans: True

(ii) Soil does not contain air.
Ans: False

(iii) The moving air makes it possible for you to fly your kite.
Ans: True

(iv) Carbon dioxide supports burning of a candle.
Ans: False

(v) Birds, bats and insects can fly due to the presence of air.
Ans: True

Short Questions Answers

Q3: Which is the major component of air?
Ans: Nitrogen

Q4: What percentage of air is nitrogen?
Ans: 78%

Q5: Which gas is important for burning to occur?
Ans: Oxygen is essential for burning 

Q6: What percentage of air is oxygen?
Ans: About 21% of air is oxygen.

Q7: What is the name of the gas we breathe in?
Ans: Oxygen

Q8: What is the name of the gas we breathe out?
Ans: Carbon dioxide

Q9: Which device is used to harness wind energy to generate electricity?
Ans: Wind mill

Q10: What makes firki to rotate?
Ans: Moving air makes firki to rotate.

Q11: What is wind?
Ans: Air in motion is called wind.

Q12: What may even uproot trees and blow off the rooftops?
Ans: Strong winds, cyclones, and storms can uproot trees and blow off rooftops. 

Q13: What are those tiny shining particles in the beam of sunlight?
Ans: Those tiny shining particles are the dust particles present in the air.

Q14: What do you understand by atmosphere?
Ans: The atmosphere is the layer of air that surrounds the Earth.

Q15: Why air is called a mixture of gases?
Ans: Air is a mixture of gases because it contains various gases like nitrogen, oxygen, carbon dioxide, and water vapor, each retaining its properties.

Q16: Why pages of an open book begin fluttering when the fan is switched on?
Ans: Pages of an open book flutter when the fan is switched on due to moving air (wind).

Q17: What is air made up of?
Ans: Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapor and a few other gases. Some dust particles may also be present in it.

Q18: How do we feel the presence of air?
Ans: We cannot see the air around us but we can feel its presence when the leaves of the trees rustle or the clothes hanging on a clothes-line sway.