10 Surprising Effects Of Global Warming

A creative video explain the pollution gases.

By sk

Pollution, Ozone, Recycling, etc.

http://eschooltoday.com/ozone-depletion/ozone-information-for-children.html
The website above contains lots of information about what we are currently studying. I hope this will help our class Sec 2 for our Geography project. :)

-Adrian Wong

Fun Science Facts about Our Body Parts ! @@

The brain uses over a quarter of the oxygen used by the human body. Your heart beats around 100000 times a day, 36500000 times a year and over a billion times if you live beyond 30. Red blood cells carry oxygen around the body. They are created inside the bone marrow of your bones. The colour of a humans skin is determined by the level of pigment melanin that the body produces. Those with small amounts of melanin have light skin while those with large amounts have dark skin. Adult lungs have a surface area of around 70 square metres!. Humans have a stage of sleep that features rapid eye movement (REM). REM sleep makes up around 25% of total sleep time and is often when you have your most vivid dreams. Most adults have 32 teeth. The smallest bone found in the human body is located in the middle ear. The staples (or stirrup) bone is only 2.8 millimetres long. Your nose and ears continue growing throughout your entire life. Infants blink only once or twice a minute while adults average around 10. As well as having unique fingerprints, humans also have unique tongue prints. The left side of your body is controlled by the right side of your brain while the right side of your body is controlled by the left side of your brain. Antibiotics are only effective against bacteria, they won't help in fighting off a virus. It takes the body around 12 hours to completely digest eaten food. Your sense of smell is around 10000 times more sensitive than your sense of taste. Your height is 7 times the length of your foot XD For more facts, your can visit   http://www.sciencekids.co.nz/sciencefacts.html EriccC

Main causes of OZONE DEPLETION

As we study this chapter, we have read through Ozone depletion. Let's look at the MAIN OZONE DEPLETION SUBSTANCES(ODS)

• Chlorofluorocarbons (CFCs)
  • The most widely used ODS, accounting for over 80% of total stratospheric ozone depletion.
• Used as coolants in refrigerators, freezers and air conditioners in buildings and cars manufactured before 1995.
• Found in industrial solvents, dry-cleaning agents and hospital sterilants.
• Also used in foam products — such as soft-foam padding (e.g. cushions and mattresses) and rigid foam (e.g. home insulation).
• Halons
  • Used in some fire extinguishers, in cases where materials and equipment would be destroyed by water or other fire extinguisher chemicals. In B.C., halons cause greater damage to the ozone layer than do CFCs from automobile air conditioners.
• Methyl Chloroform
  • Used mainly in industry — for vapour degreasing, some aerosols, cold cleaning, adhesives and chemical processing.
• Carbon Tetrachloride
  • Used in solvents and some fire extinguishers.
• Hydrofluorocarbons (HCFCs)
  • HCFCs have become major, “transitional” substitutes for CFCs. They are much less harmful to stratospheric ozone than CFCs are. But HCFCs they still cause some ozone destruction and are potent greenhouse gases.

By-Bigbang VIP Janice Kwon❤

Air Pollution Causes, Effects And Solutions!! This video shows some picture and some causes that cause air pollution and how all this cause global warming .There also provide some solution .Perhaps we can take some idea from here for our project.

 BY:Emily 

The origin of bad ozone

When gasoline and coal are burned, nitrogen oxide gases (NOx) and volatile organic compounds (VOC) are released into the air. During the warm, sunny days of spring, summer and early fall, NOx and VOC are more likely to combine with oxygen and form ozone. During those seasons, high concentrations of ozone are often formed during the heat of the afternoon and early evening, and are likely to dissipate later in the evening as the air cools.

VIDEO ABOUT IT :)

BY: ZOEY 

SoRRy I am late :(