Air and Water Chapter questions and Answers for Grade 4 and 5 Class students from online-shiksha.
Air and Water True or False
Air and Water Question Answers
Que: What is part of the atmosphere?
Answer: Nitrogen, oxygen, carbon dioxide and many other trace gases form the main part of the atmosphere.
Que: What does the ozone layer do in the atmosphere?
Answer: The ozone layer absorbs the harmful ultraviolet rays emanating from the Sun, which prevents them from reaching the Earth’s surface.
Que: What does the atmosphere mean for life on Earth?
Answer: The air we breathe is in the atmosphere, which helps regulate Earth’s climate and plays an important role in the water cycle.
Que: What forces maintain the atmosphere on the earth?
Answer: Gravity is the force that keeps the atmosphere around the Earth stable.
Que: How does the thickness of the atmosphere change with altitude?
Answer: The thickness of the atmosphere is greatest near the surface of the earth, but the thickness of the atmosphere decreases with height.
Que: Which gas is available in the largest amount in the Earth’s atmosphere?
Answer: Nitrogen, comprising 78% by volume, is the most abundant gas in the Earth’s atmosphere.
Que: What does oxygen do in the atmosphere?
Answer: Oxygen is necessary for respiration of living organisms to break down food and obtain energy. This combustion is also helpful.
