Category: Science

Why Plants Need Water?

Why Plants Need Water?

Water is indispensable for living organisms including plants. Following is an account highlighting the key areas of significance of water in plant life vis-à-vis pattern of navigation in plant body: Solvent Minerals from the soil in solid (particle) form can not be transported to aerial parts of a plant without the assistance of a fluid […]

Why is Earth Round?

Why is Earth Round?

It is speculated that the earth emerged into being some 4.5 billion years ago as it separated from out of a gigantic gaseous substance. The earth is almost spherical in shape and like any other massive object would attract any thing on its surface toward its centre, a universal characteristic of celestial bodies, known as […]

Why Does Earth Rotate?

Why Does Earth Rotate?

Scientists are of the opinion that the earth was composed of clouds of gas and dust particles — the nebula that had crushed in itself under the interaction of its core gravity and got a spinning thrust. Further upon undergoing subsequent condensation, it’s just the speculation, the dust particles might have become denser and started […]

Why We Need Body Hair?

Why We Need Body Hair?

Human body has numerous hairs all over the body; Following account discusses their merits, vital for out body: – PROTECTION Hair is an integral part of the Integumentary system of our body. Primary mechanical protectoral role of the hair is to prevent intrusion of external miniature elements. In other words they perform the function of […]

Why Does It Snow?

Why Does It Snow?

There is no other natural event that has attracted the imagination of adults and children more than snow. Objects like snow men, snowflakes and snow angels increase the childish wonder at the fluffy white material that people generally call snow. Snow is something that only comes in winter. It is formed from water droplets that […]

Why Does Fog Form?

Why Does Fog Form?

It’s hard to tell smog from fog when one lives in a busy city. The best time for viewing for is before sun rise in the countryside. Fog is used in movies for different roles, they can create suspense or can lead to a flash back. Although it’s a fact that fog is real and […]

Why Does Dew Form?

Why Does Dew Form?

One of the most poetic things anyone can probably imagine is DEW. It revives the childhood and old memories. The name ‘dew’ has a charming effect, it can be found on cool surfaces in morning or on leaves, grass, tree or window panes. What is dew made of? Dew is basically made up of water […]

Why Does Moon Change Shape?

Why Does Moon Change Shape?

Moon does not really change it shape, it is half lit by sunlight because its one revolution and rotation is completed in 29.5 days around its axis leaving the other half in darkness. We can only see the part of the moon which receives sunlight and during its revolution the vision of sunlit area differs. […]

Why Is The Grass Green?

Why Is The Grass Green?

The grass is green in color because it contains a pigment like other plants which is called chlorophyll. This pigment is found in organelles in a plant cell known as chloroplast. It is involved in the photosynthesis which is a process by which plants make their food. During this process, water and carbon dioxide make […]

Why Does Chocolate Turn White?

Why Does Chocolate Turn White?

Chocolate is made from cacao beans that are fermented and dried in the sun. The beans are roasted and winnowed. However for making the chocolate bars which are sold in the supermarkets, the cacao butter is melted by heating the inner ribs of the cacao beans and then ground to make a paste. The paste […]

Why the Earth Has Seasons?

Why the Earth Has Seasons?

The main reason of earth having four seasons is that it is tilt on its axis. An axis is an imaginary line passing through the poles. An angle of 23.5 degrees is formed to the perpendicular of the earth’s orbit and axis always points in the same direction throughout the year. The sun rays hit […]

Why are Polar Ice Caps Melting?

Why are Polar Ice Caps Melting?

We are going through the time of interglacial period. During this period, ice melts from the polar caps extending melting rate from its average time. Ice in the arctic region is melting that comprises 3% of the total ice that is present on the earth. The other ice in Antarctic region and Greenland is melting […]

Why Does the Moon Have Craters?

Why Does the Moon Have Craters?

Moon has a lot of craters which are caused when something hits on its surface causing a dent. These craters are mainly formed because the meteors and asteroids collide with the moon. They usually strike with different speeds but the average speed is 20 kilometers per second or 12 miles per second. There are also […]

Why is the Sky Blue?

Why is the Sky Blue?

The color of sky appears blue on a clear day because the atoms of nitrogen and oxygen present in the atmosphere separate the white light of the sun into its many colors scattering them throughout the atmosphere. The wavelength of the blue light has the ability to scatter better than the rest and it predominates […]

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