Teen Sci with WinK


Black-Widow Spiders

Posted in Uncategorized by wink on January 16, 2006

Do u know why some species of spiders r called Black-widow spiders? Coz the females usually eat the males after mating. In fact, many other animals eg female fireflies also devour males after mating. This sometimes happens unless if male have sense enough to scram quickly or offer another food supply for female.
This is why these females are larger than males.

Why such a carnivorous act? Coz they need proteins from males to produce good quality offsprings! The more nutritious the males, the healthier the offspriings.
Now the boys know how lucky they are to live in safety of male-dominated world! HUMPH!!!

Facts:

* Prey: insects
* Predator: Mud-Dauber wasps.
* The venom of the black widow spider is 15 times as toxic as the venom of the prairie rattlesnake.
* Only the female Black Widow is venomous; males and juveniles are harmless..
* Araneae is the Latin word for spider
* Black Widow spiders are not usually deadly, especially to adults, because they inject only a small amount of venom.
* The female Black Widow hangs belly upward and rarely leaves the web.
* The Black Widow is also called the “hourglass” or “shoe-button” spider.
* Black Widow is considered the most venomous spider in North America.

Genus: Latrodectus
Phylum: Arthropoda
Sub Phylum: Chelicerata
Class: Arachnida
Order: Araneae
Sub Order: Labidognatha
Family: Therididae
Species: 6
Source: http://www.desertusa.com/july97/du_bwindow.html

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Mystery Behind Farts

Posted in Uncategorized by wink on January 16, 2006

Did u know that farting releases methane gas into atmosphere? Methane gas is green-house gas so every time u fart, you are contributing to global warming and air pollution!
Before u environmental conservationists stop ur farts, note that farting regularly keeps u healthy, removes poisonous methane gas in ur bodies, u can actually get sick if u stop farting. A very wise person once told me that a healthy person should fart around 80 times/day!
A family remedy to cleanse our bodies off methane in times of indigestion is to eat a lot of either raw or toasted garlic. It really works! Only, try this when no one’s around as u’ll be stinking from both ends.

Farts can be useful:

Farts and other gases produced by rotting organic materials are called biogas. In the days before electricity, biogas was drawn from the underground sewer pipes in London and burned in street lamps, called gaslights. Biogas can be used as fuel for other things left to ur imagination!

What produces farts:

Everyone creates this gas as they digest food. Helpful/symbiotic bacteria called methanogen, in our bodies produce methane gas (farts) as they help digest food inside our anaerobic/oxygen-free intestine.

King Kong, Movie Review

Posted in Uncategorized by wink on December 26, 2005

Well my impressions of the movie in succession order are;
snore, hmm, argh, arrrrgh, oh, awh, sniff, and boo hoo hoo.
I quite liked the movie, a great 3 hour mix of thrilling excitement and drama. If the trailers arent motivating you to watch the movie, here’s a short as possible summary of the story.

A few decades ago, just after the completion of the empire state building in new york, innocent, desperately in need of a job and poverty-driven Anna, also a size 4 actress, after a few bit of lies and tricks ended up acting opposite a very famous heroin actor on a disguised wild animal capture/almost pirate-like ship. She ended up falling for the dashing script writer(Adrian Brody/academy award’s best actress basher). With the help of the cunning, filming obsessed director, their ship arrived at an unchartered island, which was seriously creepy from its cliffs fencing it to the ugly natives…and the creatures in its forests. Well, the cute blonde was offered as a sacrifice to the giant gorilla by the natives, this involved a lot of lava displays, and of course a lot of screaming of the blonde, actually, she screamed quite a deal in the movie. Well, the ape played her like a doll and took a liking to her dancing around and juggling. Well, the search party, lead of course, by lover boy met monstrous creatures in the forest, including giant mossies, crawling bugs, brain-sucking worms and Dinosuars! A lot of people got squashed and eaten. On the other end of the forest, the ape fought off 3 dinosaurs to save blondie, after which she started to feel for the ape. The happy moment was ended by lover boy rescuing her and the ape pursuing after them. The survivors of the party used chloroform on the ape to put him to sleep and somehow took him back to New York for display to its upper class. Blondie couldnt stand the cruelty and escaped the press and pratically disappeared from the survivors of the trip. Eventually, the ape broke away from its chains and started destroying half the city while searching for his blonde babe. The couple found each other in the end and went skating on ice and climbed the empire state building. The ape fought some aircraft sent by the military to put it down while also keeping this blonde from danger. Of course, on the end, it died and made its famous fall off the building, leaving his blondie to cry in the arms in the arms of lover boy.

Hey, trust that Peter Jackson is an academy award winning director, and he makes magnificent movies. King Kong is really a masterpiece and should be at the top of everyone’s must-see movie list.

The Story Of Vegetable Oil

Posted in Uncategorized by wink on December 26, 2005

First of all, Vege oil is a type of Fat. But hey, if you happen to be on a diet I reccomand vege oils and their products like margarine which your body can digest better rather than animal oil and their products like lard, cream, cheese or butter. Plus they are healthier for you.
-Fats/triglycerides are polymers(large compounds made of smaller, similar molecules) of molecules of glycerine and fatty acids.

Vege oils are extracted from parts of plants- seeds, leaves, flowers. Most common are seeds, like sesame, sunflower, cotton, coconut. You can do a little extraction of oil yourself by heating/toasting fresh samples of some of the above seeds in a dry pan on low flame.
Vege oils have many uses – cooking oil
– fuel for vehicles, seriously
– other food stuff like margarine, salad oil
– soap, cosmestics etc.

Vege oil are becoming more popular in industries because they are quite harmless on environment(compared to crude oils) and are biodegradable. They can be used as electrical insulators and fuel for diesel engines.
-Actually, Rudolf Diesel, the inventor of the diesel engine(and nearlly got himself killed making it) actually used peanut oil as fuel.

Harry Potter and The Goblet of Fire, Review

Posted in Uncategorized by wink on December 2, 2005

This movie followed the general plot from the book. I think HP book fans will like it more than the third movie. The scenes were very exciting and fast.
The first scene, Harry’s dream was very well acted out.
The task with the hungarian horntail dragon will keep you on your toes, but it was really silly when the dragon climbed around the tower to get to Harry, as if its afraid of heights and couldn’t fly around it.
The second task, in the lake was also realy cool but instead of Winky, Neville gave Harry the gillyweed and made the scene more funny.

All the young actors were cute and played their roles really well.
However, the characterization of some characters and some scenes were a bit disappointing.
– In the movie, Dumbledore was a bit too rough on Harry and acted too authoritative than wise and gentle, as according to the book.
– Hermione looked really pretty especially at the Yule Ball, but at other times, could you say, she looked a bit too pretty. She didn’t even have bushy hair!
– I was a bit disappointed with how Voldemort turned out, I expected him to be taller at least, and maybe uglier.
– The maze for the third task was way too easy, there were only creeping plants instead of boggart(disguised as dementor), giant spider and sphinx.

Well, overall, I really liked this movie, especially in contrast to the third movie. Like every HP fan, I’d recommend you guys to buy the DVD so you can watch it over and over again.

How To Tell If Your Local Beach Is Unsafe

Posted in Uncategorized by wink on November 25, 2005

Well, under this topic, I’ll just explain some phenomenon (actually, some biological indicators) to watch out for other than excessive jellyfish numbers at the beach.

It is probably not a good idea to swim or fish at beaches or lagoons when:
-Blue Starfish, yes, they are beautiful, but, their numerous presence means the water is polluted, maybe with excessive sewage in it.
-Colourful beach/Red Tides – red, violet, orange, blue, green, brown, pink – yet again, its beautiful, but Do Not fish there, because the fish you catch may give you food poisoning, even killing you.

Algal Bloom Causes Red Tides

Posted in Uncategorized by wink on November 25, 2005

There are millions of microscopic algae in the sea water. They photosynthesise/use sun to make food. To trap the necessary sunlight, they use pigments/colours eg green cholrophyll.

In summer/warmer water and also when minerals are available, algae Bloom/grow in number. In favorable times, just one alga can replicate (process of reproducing offsprings) a million times in 1 or 2 weeks!

With increasing numbers, there is competition for light so other pigments which are better adapted at collecting sunlight than green chlorophyll is used by algae. These coloured pigments may discolour the water to red, pink, orange, yellow, blue, green, brown or sometimes violet. This is Red Tide, (red because it is most common coloured pigment used)

Some algal species causing red tide can be very toxic to other organisms including humans. However, algae are very important in the sea because they are at the start of food chains. They may be eaten by shellfish (not harmed by red tide), then humans may eat the shellfish, but the toxins from the algae which are in the shellfish are fatal to humans. So, red tides are usually harmful to humans.

What Causes Water Shortage

Posted in Uncategorized by wink on November 25, 2005

Like energy, the amount of water in the world is stable. It changes its physical forms, Ice-Water-Steam, but the amount of H2O never changes. Then, why are we facing problems of water shortages?

Actually, we are facing problems of clean water shortages. This is due to many things like industries, pollution, global warming etc.
-Industrial wastes may include heavy metals like mercury and lead which are very harmful to living things, they are illegally dumped into H2O sources.
-Also, especially in developing countries, sewage is dumped into rivers which are sometimes a source of clean H2O.
-Other pollution factors maybe rubbish directly thrown by people.
-A phenomenon which depletes clean H2O sources is Global Warming. With changing climates, some countries may face more floods which pollutes clean H2O while other countries may face droughts which causes massive evaporation/drying out of clean H2O.
-Human behaviour also leads to H2O shortages, many of us, especially in developed countries use H2O for granted. We use and waste excessive amounts of it.

Polluted water cannot be used at home. Even at water treatment stations, there is not enough technology to treat/clean out all the wastes in it.

Well, the conclusion is, People cause water shortage. Pollution and even global warming is caused by people, these things cause clean H2O shortage.

Since we all dread the “H2O cutoff” notice in the newspspers, please stop polluting H2O sources and try to use H2O wisely (you can also cutdown on water bills).

Harry Potter, books

Posted in Uncategorized by wink on November 22, 2005

(HP fan discussion)

Dont worry, I wont bore you with 10 pages of my comments of books 1-6. This will be very, very brief.

– Harry Potter and the Sorceror Stone is a fantastic but a bit short book.
J.K Rowling is a great author that she explained a lot in such a short book. She added her unique sense of humor to spice up the story. Also, by the end of the book, everyone would have been feeling sorry as well as proud of Harry. Oh, as well as dying to read the next book.
Yet, I still dont understand if it’s sorceror stone or philosopher stone, can anyone explain the difference?
– HP and the Chamber of Secrets is darker, and longer. That seems to be the trend in HP books. It was Great! Loved it! My favourate lines from it are, Dobby: “Harry Potter must not return to Hogwarts” and a line from Ginny’s poem, ” His eyes are green as freshly pickled toad” . Its movie was the best of all the HP movies, loved Dobby, the flying car, Aragog (spider) and the chamber of secrets with the basilisk.
– HP and the Prisoner of Azkaban introduced Crookshanks, Sirius, Wormtail,Lupin etc. JKR was very creative here, but I kinda prefer book 2 to this.
– HP and the Goblet of Fire was better than the other 3 books (my op). It has an exciting atmosphere with the the Quidditch World Cup and Triwizard, I mean Quadriwizard, Competition. The beginning of Ron and Hermione’s romance, cough, cough. The ending leaves you hanging, no fair. We just find out Voldemort is back, then Cedric dies, Moody is not real Moody then end! The waiting for book 5 was unnerving.
– HP and the Order of the Phoenix, HP getting older, more teenagy and angry. He gets his first date with Cho, though, I knew from beginning the relationship wouldn’t last, it was meant to be with Ginny. Readers feel anger in this book then hatred for Umbridge. The ending was so sad! Why JKR, Why, did you kill Sirius? If Harry used his christmas present from Sirius (the communication mirror) maybe Sirius wouldn’t have died. BOO HOO
– HP and the Half Blood Prince, BOO HOO HOO! Why is JKR killing all my favourate characters? Why Dumbledore? The beginning of the book was different from beginnings of other books, but it was great, it took JKR 6 years to compose the beginning of this book! I was surprised that Draco turned out to have some good in him! Also, I really dont think Snape is a traitor, eventhough he killed Dumbledore. He may have only done it because he took the unbreakable vow to help Draco. I really think he is on the good side. Here again, the ending leaves you hanging, Harry and his friends going to face the world, find the horcruxes and final battle with Voldemort. The only light parts in this book were the romances between Bill+Fleur, Tonk+Lupin and the short relationship between Harry and Ginny.

I cant wait for the 7th book. Its a pity JKR is only writing 7 books!It will be worth reading. She’ll have to explain a lot in that book and I hope harry doesnt die in the end. Better not!

Harry Potter?

Posted in Uncategorized by wink on November 16, 2005

Hey you all, have you found out any gossip on Harry Potter book 7? I’ve been looking everywhere and cant find anything on it. I’ll gladly post your infos on this site.

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