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Honors Assignment Questions – অনার্স অ্যাসাইনমেন্ট প্রশ্ন
- Honors Assignment It is a general belief that dust is very harmful to us. But this is only
- one side of the picture. Dust is also very useful to us. But what is
- dust? How is it formed? Every solid substance is composed of
এই পোস্টটির গুরুত্বপূর্ণ বিষয়গুলো :
অনার্স এসাইনমেন্ট প্রশ্ন – Honors Assignment Questions
- very small particles. When these small particles of matter are
- scattered, they become dust particles. For example, if we break a
- brick or a stone into small pieces, it will turn into small particles
- of dust. There are different ways by which dust is formed. When
অনার্স এসাইনমেন্ট
- solid things break, dust is formed. Smoke which is generated by
- the burning of coal, wood, petrol ete also produces dust. Dust
- particles also come from plants, animal matter, sea salt, desert and
- ash from volcanoes. These particles that get mixed with air are
- called dust. Air carries dust particles from one place to another.
- The particles of the earth’s surface also fly in the air in the form of
- dust. Jhe biggest utility of dust particles is that they help in the
- formation of rain. The water vapours in the clouds condense on
- dust particles in the form of water drops. These drops fall on the
- carth as rain. So, if there is no dust particle, rain will come late.
- Dust also helps to form mist, fog etc.
- The dust particles which are present in the air, scatter sunrise in all
Honors Assignment – অনার্স এসাইনমেন্ট
- directions. Because of this, there is no complete darkness even
- long after the sunset. We see red colour in the sky at sunrise and
- sunset because of dust particles. In this way, we see that the dust
- particles which are thought to be harmful are often very useful too.
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Honors Assignment Questions – অনার্স অ্যাসাইনমেন্ট প্রশ্ন
আপনার বন্ধুদের সাথে শেয়ার করতে নিচের বাটন এ ক্লিক করুন ....
