Explanation

Tsunami
The term of “tsunami” comes from the Japanese which means harbour ("tsu") and wave ("nami"). A tsunami is a series of waves generated when water in a lake or a sea is rapidly displaced on a massive scale.

A tsunami can be generated when the sea floor abruptly deforms and vertically displaces the overlying water. Such large vertical movements of the earth's crust can occur at plate boundaries.

Subduction of earthquakes are particularly effective in generating tsunami, and occur where denser oceanic plates slip under continental plates.

As the displaced water mass moves under the influence of gravity to regain its equilibrium, it radiates across the ocean like ripples on a pond.

Tsunami always bring great damage. Most of the damage is caused by the huge mass of water behind the initial wave front, as the height of the sea keeps rising fast and floods powerfully into the coastal area.








(simplified from www.panda.org)

Discussion

advantages and disadvantages of chocolate

Hot chocolate, chocolate cake, chocolate chip cookies, chocolate brownies, and the list goes on forever, especially for chocolate lovers but do you really know what these chocolate delicacies can do for your health?

Let's talk about the positive effects or the pros of eating these sweets. Scientific researches have shown and proven that chocolates contain large quantities of antioxidants. These antioxidants help neutralize harmful chemical reactions that occur while metabolic processes take place in our system. It was also reported that these are also said to benefit the circulatory system by promoting good blood flow. Some people have even said they noticed a moderate drop in their blood pressure when eating dark chocolate daily.

People feel good when they eat chocolates. It increases brain levels of several chemicals, including mood-altering chemicals, phenylethylalanine and anandamide, which produce a mild, confidence-boosting effect. It also has a chemical that lifts a person's mood and theobromine, a stimulant that energizes you. It is also an anti-cancer substance, a brain stimulator, and its prevents cough and diarrhea. There are many reports that have confirmed the aphrodisiac effect of chocolates. There were even some claims that eating these tasty candies can help slow down the decline of brain functions as we grow older.

On the other hand, eating too much chocolate causes a person to become overweight or obese. This is one of the reasons why many, especially the women, avoid eating too much of it. Factory-added substances, such as fat and sugar, can have an addictive effect. Another big problem people have when eating the candy is tooth decay, especially with the younger age group, those who eat too much chocolate and have poor oral hygiene. The fermentable sugar present in chocolate has the potential to trigger tooth decay. But the antioxidants may help to offset the acid-producing potential to a certain extent, while the calcium, phosphate and other minerals present, especially in milk chocolate, may also reduce the harmful effects on teeth.

We should observe moderation when we eat chocolates so that we can enjoy the health benefits that it can give us especially when we include it as part of our healthy diet regimen. Savor the bitter sweet chocolate in your mouth and let it melt and fill your tastebuds with its tempting flavors and textures. In terms of the negative effects, everything will be within your control. Just eat enough and you'll have a healthy chocolate-sweetened life!.