Posted by WhyDoes on Sep - 5 - 2009 - Comments Off on Why Does Helium Change Your Voice?
Isn’t it funny to hear someone who has just gulped a bit of helium from a balloon speak with a squaky voice? Clowns and comedians use this trick to make audiences laugh in parties. People may think it’s a joke, but why does helium change one’s voice? It’s nice to know why it happens. Warning! Helium is not safe! First of all, let’s give out a warning about helium. Helium […]
Posted by WhyDoes on Sep - 5 - 2009 - Comments Off on Why Does Hair Turn Grey?
Everybody ages and when we age we will lose our hair color. No matter what color our hair is, there will come a time that it will turn into something drab and grey. Why does our hair turn grey? The answer lies in the chemical known as melanin. Melanin is the same pigment that lends color to our skin. The darkness or lightness of hair and skin color depends on […]
Posted by WhyDoes on Sep - 5 - 2009 - Comments Off on Why Does Graphite Conduct Electricity?
First of all, we must ask what graphite is. Graphite is simply the dark solid that we thought of as “lead” in pencil, although there is no lead in it. From that, you all know now graphite is black and is very, very soft. So you ask your self: How can that conduct electricity? It’s not metal! Well, the reason for graphite’s ability to conduct electricity lies in its atomic […]
Posted by WhyDoes on Sep - 5 - 2009 - Comments Off on Why Does Easter Fall on Different Days Each Year?
To Christians all over the world, Easter Sunday marks the end of Holy Week. It is observed as a day of celebration of Jesus’ resurrection. Yet, as Christians, many of us never questioned the dates we were told to observe Holy Week and Easter. Why does Easter fall on different days each year? How are the dates of the Holy Week and of Easter Sunday calculated? According to articles online, […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Deja Vu Happen?
Deja vu is a French term that literally means “already seen.” It was coined in 1876 by French scientist Emile Boirac, one of the first to study this strange phenomenon. For the believers of the occult and the mystic, deja vu is equivalent to precognition, which is the ability to see or know what’s going to happen before it truly happens. Unlike precognition, however, deja vu happens during the event, […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Deforestation Happen?
Imagine a world without trees. Without trees, we won’t have clean air to breathe. Without forests, greater parts of the top soil will erode each year, landslides will occur frequently, and floods will rise even when the amount of rainfall is low. This is what has been happening for years. Trees have been cut down by humans since ancient times to build houses, furniture, wagons, and weapons. Trees are essential […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Copper Oxidize?
We are all familiar with how oxidation works. Iron produces a reddish brown flaky layer, aluminum produces white flakes, and apple turns brown when exposed to the air and moisture for some time. Just like these examples, copper also undergoes oxidation. But unlike iron, which turns to rust when exposed to air and moisture during oxidation, copper turns to green when exposed to oxygen. Water, in this case, is not […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Coffee Effect the Growth of Plants?
Coffee is one of the most heavily consumed beverages in the world today. People use it as a stimulant; they drink it to stay awake and keep themselves energized at work. More than the energizing effects of coffee, some people also use it to effect plant growth. Why does coffee effect the growth of plants? The reason may be found in the coffee grinds. Coffee grinds are used instead of […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Chocolate Turn White?
Chocolate is made from cacao beans that were fermented for several days, and then dried out in the sun. The beans are then roasted and winnowed. But to create the chocolate bars sold at supermarkets, the inner nibs of the cacao beans are heated to melt the cocoa butter and then ground to a paste. The paste is called chocolate liquor although it doesn’t have any alcohol content. Surprisingly, the […]
Posted by WhyDoes on Sep - 3 - 2009 - Comments Off on Why Does Cancer Kill?
There is a common misconception that any cancer can kill a person. But this is not true. Not all types of cancer can kill a person. More than 50% who have been diagnosed with cancer lived for more than five years. Some types of cancers even have survival rates of more than ninety percent. Aside from that, cancer at an early stage does not kill. This is why a lot […]