The observable events which occur naturally without any human intervention is known as natural phenomena. For example: weather,gravity,biological processes,germination,rusting etc.
Types of phenomena:-
-Physical phenomena
-Chemical phenomena
-Biological phenomena
-Astronomical phenomena
-Geological phenomena
-Meteorological phenomena
>Importance of natural phenomena
-Growth of a plant being a natural phenomena help humans get food from them.
-Volcanic eruptions and oceanic currents affect the global climate
-Formation of clouds and rainbows can impact the environment in many ways.
In this blog, we are going to discuss some of the startling natural phenomena.
>Formation of a rainbow 🌈
● Rainbow appears like an arc of different colors in the sky when sun shines after a heavy rain. It can be seen in the section of sky which is opposite the sun.
● It's formation obeys the process of refraction( in which a light passing through any medium changes its direction),reflection and dispersion of light in which white light splits into different colors.
●How it actually happens?
- After the rain,sun shines but there are still few raindrops left in the atmosphere,these raindrops plays an important role in rainbow formation.
- As sunlight passes through a rain drop refraction occurs that is light coming from sun changes its direction in raindrop.
- The light now reflect off back of the raindrops and it refracts again as it exits the raindrops
- This refracted light splits into 7 different colors and travels towards the viewer's eyes.
● The color combination of a rainbow has an acronym : VIBGYOR
V-Voilet
I-Indigo
B-Blue
G-Green
Y-Yellow
O-Orange
R-Red
● One of most important condition for rainbow formation is that the sun must be low in the sky,less than 42° above the horizon.
● The other condition is presence of water droplets like rain,fog or most which will act as small prisms in front of the viewer.
>Rusting of iron
●Iron objects or structures forming a layer of oxygen over them by reacting with air containing high level of oxygen is known as rusting of iron.
● This layer formed is known as rust or in chemical terms we call it Iron Oxide.
● The reaction between iron and oxygen present in the air is known as Redox Reaction.
●Fe2O3 is the chemical formula for rust
and is commonly called ferric oxide or iron oxide.
●It is usually reddish brown in color and it is typically associated with corrosion of refined iron.
● The term rusting is specifically used for iron, other metals also undergo oxidation reaction but their corrosion is not called rusting.
● It is also an electrochemical process as it involves the transfer of electrons from iron to oxygen.
● Oxygen Is an oxidizing agent (gains electrons) and iron is a reducing agent (losing electrons), while water and electrolytes present in it act as a Catalysts
●Prevention of rusting
Every year billions of iron articles becomes a waste because of rusting. Thus, few methods were applied to stop such wastage. They are:-
-Rust-resistant alloys,special weathering steel alloys Cor-ten rust at much slower rate than normal
-Galvanization,it is the process of giving a protected coating of metallic Zinc on the object by hot-dip galavanazing or electroplating.
-Cathodic Protection,the process of suppressing the chemical reaction by supplying an electric charge to inhibit corrosion on buried or immersed structures.
-There are few other ways also like coatings and painting,bluing,inhibitors and humidity control.
>Germination and Growth of Plants
● The process of growing of a seed into a seedling is known as germination, it is the most important part for the proper growth of the plant and crops.
● It follows these steps:
-Imbibition: The absorption of water by the seed from soil,activating enzymes to break down the reserve food of the seed
-Cell expansion: The enlargement of cells converting seed into an embryo.
-Seed coat breaks: The breaking of a seed coat,allowing the root to emerge.
-Shoot Growth: Growing of a shoot towards the sun and it slowly develops into strems and leaves.
●Following conditions are important for germination:
-Water: It softens the seeds coat and provides dissolved oxygen to the embryo.
-Temperature:Seeds require a particular temperature for germination like sunflowers germinate at lower temperatures while winter seeds need high temperatures.
-Light: To warm the soil and support germination sunlight is required.
-Oxygen: It is very important for germination.
●After germination, the process starts in which plants increase in size and mass,this process is called Growth of Plants.
●They grow by the following steps:
-Meristems:These are the growing zones which contain undifferentiated cells which have the ability to divide and differentiate.
-Primary growth: Stems and roots increase in length caused by cell division in apical meristems.
-Secondary growth:Stems and roots increase in thickness caused by cell division in lateral meristems.
-Hormones: Auxin,gibberellin and cytokinin control the growth in plants.
●Required conditions for the growth of plants:
-Light:Blue light promotes leaf growth while red light promotes plant growth.
-Temperature:Optimum temperature for Photosynthesis is between 65°F and 85°F.
-Carbon Dioxide: It is important as plants consum carbon dioxide during Photosynthesis.
CONCLUSION
As we end our trip throug͏h a nice realm of nature events, we feel a mix of surprise and joy at the amazing messiness and charm of our planet. From the stunning show of a rainbow to the tricky way that seeds grow in plants, every event is proof of the great range and strength of life on Earth.
In our search of rust, growing seeds, and how they grow we got a better grasp of the mix of ties between living things and their world. We saw how nature events are made by a tricky mix of things, from the chemical changes that cause rust to the signals that manage plant growth.
As we keep looking into and learning about the nature world, we are reminded of a importance of saving and guarding our planet's valuable resources. By getting a more clear understanding of the complex links between live things and their ecosystems, we can work hard in creating the sustainable resources for future use.
In the end,our journey through the realm of natural phenomena has left the impression of wonder,awe and appreciation for the incredible complexity and beauty of this world. As we continue to explore the natural world, let us remain curious and committed towards preserving the beauty and wonders of our planet.
