Advertisements
Advertisements
प्रश्न
What is wind?
एक पंक्ति में उत्तर
टिप्पणी लिखिए
Advertisements
उत्तर
Fast-moving air is called wind.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. | (a) Oxygen |
| 2. A gas used for filling weather observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
What do you observe when Carbon dioxide gas is passed through lime water.
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
How is air useful to water boats?
How is air useful to agriculture?
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
Air has no ______ & ______.
Do sailors need the help of wind to sail?
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
Explain the following observations very briefly
A firki does not rotate in a closed area.
