1. How would you show that air is needed for combustion ? 2. Why earthworms are seen during rainy season? 3. Why do mountaineers carry oxgyen cylinder ? 4. What is respiration ? Is respiration same as photosynthesis ? 5. Why do we see water drops on the outer surface of a glass containing ice ?
Answers
Answer:
◼️Hii There◼️
Explanation:
1️⃣Cover the burning candle with a glass jar. After few minutes the candle is extinguished. As the supply of air is stopped due to glass jar the burning of candle is also stopped. This experiment proves that air supports burning.
2️⃣When the rain hits the ground it creates vibrations on the soil surface. ... Earthworms find it easier to travel across the surface of the soil when it is wet, as they need a moist environment to survive.
3️⃣Atmospheric pressure is low at high altitudes. The volume of air increases and the air becomes less dense because the volume is inversely proportional to density. Hence, a lesser volume of oxygen is available for breathing. Thus, mountaineers have to carry oxygen cylinders with them.
4️⃣The lungs and respiratory system allow us to breathe. They bring oxygen into our bodies (called inspiration, or inhalation) and send carbon dioxide out (called expiration, or exhalation). This exchange of oxygen and carbon dioxide is called respiration.Photosynthesis converts carbon dioxide and water into oxygen and glucose. ... Cellular respiration converts oxygen and glucose into water and carbon dioxide. Water and carbon dioxide are by- products and ATP is energy that is transformed from the process.
5️⃣This phenomenon is known as condensation. Cold water inside the water tries to cool down The water vapor in air which comes in contact with wall of glass and due to low temperature the vapor liquid and appears as water droplets on the outside of glass.
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