Why

Why does the earth have a liquid outer core

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Earth's Structure

As we all know the Earth has a layered architecture and the layer we see of our planet’s surface is actually the crust, which is also its thinnest layer that ranges from 5 to 70km in depth. The crust is the covering of the earth’s second layer that is the mantle. The mantle, which is also the thickest layer of earth, extends to a depth of about 2890km with pressures at the bottom of the mantle reaching as high as 140 GigaPascals. For comparison, our atmosphere has a pressure of only 0.0001 GigaPascals.

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Why do windows fog up in the winter

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Foggy Windows

During the winter season, the home windows fog up a lot and you have to wipe them almost every morning. The same happens because of the considerable difference between the temperature inside the house and the outdoors. The fogged up windows suggest that there is excess moisture in the air indoors. This excess moisture comes from the daily household activities like cooking, bathing and dish-washing. This warm and humid air when comes in contact with the cold, glass home windows, the condensation process occurs and the excess moisture gets deposited on the windows, thereby making them foggy.

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Why do we need a garden tiller

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Garden tiller

Whether you are a novice or an experienced gardener, a garden tiller is something that you cannot do without if you want to save your precious time and take good care of your produce. No matter if you are planting veggies and flowers or simply want to landscape your garden, a garden tiller come shandy in all situations. Available in a range of sizes and types, the garden tillers help you with the following things.

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Why do people die

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human skeleton

They say, everything ends on a day and we humans are no exceptions, no one, indeed, is. We are the mortal ones, so we die once we complete our life cycle. It begins with our birth and ends up with death. There is a starting point and there is always and an end point. We all die, mostly, due to old age, though some people also die young. This happens once our bodies become physically incapable to work at a certain point of time. Meaning, the cut-off from life or to cease from living is what you call as death.

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Why do women wear high heels

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High heels

Many women keep complaining about how their feet being hurt after wearing high heels, but they still wear them. The most common answer to this question is that women wear them to look sexier and taller. While not all women go for high heels, there are many who endure the uneasiness of high heels. Different people have a different take on this question. Here are some of the reasons why women love wearing high heels.

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Why do people drink alcohol

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alcoholism

No matter where you go, you will find people drinking alcohol. People drink for many reasons – sometimes too excessively even when knowing it is bad for health. Now the question arises why they do it at all. There are too many studies and researches available on this topic clearly underlining the short term and long term harmful effects. There are a number of answers to this question. If you are interested to know why people drink, read the following lines.

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Why do dogs howl at sirens

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Howling Dogs

How many times have you seen your dog howling on hearing the sirens of emergency vehicles? I have experienced the same with my dog when any emergency vehicle like a fire truck or an ambulance passes by. That leaves me with the question that why do dogs howl after all at sirens. Although not all dogs do howl at sirens, it’s a problem for many dog owners. Many people believe that since the dogs have a very sensitive hearing and sound of sirens is painful to them, they start howling.

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Categories Why

Why do girls have periods

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why do girls have periods

The menstrual cycle or periods in girls is an important part of the human reproduction cycle. While males aren’t born with reproductive organs that include ovaries and uterus, girls are born with a pair of ovaries, each of which holds thousands of extremely tiny eggs.  These are all the eggs girls will ever have. Once girls reach puberty, which happens when their age is usually between 11 and 15 years, roughly in a month an ovary releases an egg due to some hormone changes in the body.

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Why do we have leap years

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Why do we have leap years

A leap year is a year that contains one additional day, which in the Gregorian calendar, which is one of the most commonly used calendar in the world, adds one extra day in the month of February after every three years. This means that in a leap year the month of February has 29 days instead of 28 it usually has. The reason behind adding an additional day to the month of February in the Gregorian calendar is to keep the calendar year synchronized with the astronomical or seasonal year.

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Why do earthquakes happen

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why do earthquakes happen

Though at a glance, the surface of earth seems completely stationary and dead, the fact is that a lot of things keep occurring inside the surface of our planet at all times. This movement that continuously happens inside the surface of the earth, results in everything from volcanic eruptions to earthquakes. The results of both could be extremely devastating at times and the world has seen the aftermaths caused by such natural disasters.

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