GLOBAL WARMING

   
         The increase in unpredictable climatic changes, underlines that Global Warming is a serious threat to the entire world. Global Warming is basically an increase in the average temperature of the Earth's surface, air and oceans...      

Causes:-
      Greenhouse gases such as water vapour, carbon dioxide, methane, nitrous oxide, ozone, chlorofluorocarbons (CFCs) and hydroflurocarbons (HFCs) result from human industrial process. These gases have the ability to absorb and hold heat in the atmosphere. This phenomenon is known as the green house effect. Burning of fossil fuels like natural gas, coal, oil and gasoline raises the level of carbon dioxide in the atmosphere. Carbon dioxide is a major contributor to global greenhouse effect..

Effects:-
      Due to higher amount of greenhouse gases, more heat is trapped in the atmosphere. This heat changes the climate and alters weather patterns. It causes extinction of endangered species, seasonal changes and natural calamities like coastal flooding..

Remedial Measures:-
*  Reusing and recycling of products may reduce waste and help limit the level of carbon dioxide in atmosphere.
*  Planting of trees in our surroundings as plants absorb carbon dioxide and give out oxygen. A single tree absorbs about one ton of carbon dioxide in its lifetime.
*  Cut down on the use of heaters and air- conditioners whenever possible.

*  Save fuels like petrol, diesel, oil and instead choose to walk or cycle your way whenever possible. Use of public transport can cut down on excess use of gasoline.
*  Save electricity and water.
*  Though Global Warming may be a threat universally, each one of us can fight it on individual level..








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PRECIOUS PRAIRIES...

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What Is A Prairie?
       Prairie is a French word referring to a meadow, grassland or a pasture. Prairie is a kind of land form, which refers to an area with low landscapes consisting of grasses and herbs, with lesser trees. It is basically temperate grassland..

Where Is It Found?
       Prairie is typically found in North America. It covers much of the area referred to as the Great Plains of the United Nations and Canada. North American prairie is one of the most endangered ecosystems on earth. The grasslands of North America began to form  about 20 million years ago..

How Are Prairies Formed?
      Prairies are formed when the sediments are washed out of the rocky mountains over millions of years. This rubble from glaciers, windblown deposits of silt, sand and clay was once a shallow land area. The moist area from Pacific, dried out the interiors of the continent and favoured grass over trees..


Prairie Advantage:-
        Prairie's are not subject to soil erosion. Due to the deep, interconnected root systems, the prairie grasslands firmly hold the soil in place thus preventing erosion. As a result, the prairie plants can retain water even in the driest conditions...

Purple Coneflower

grasshoppers                                                                                                      

beetles

Prairie Habitat:-
Although most prairies may be grasslands consisting a vegetation of wild flowers like Purple Coneflower have medicinal value to humans. This type of daisy family was used to treat ordinary colds to snakebites by the Native American tribes. Animals in prairie habitat have adapted to varying environment changes. They can withstand freezing winters to sweltering summers. From invertebrates like grasshoppers and beetles to large mammals like antelopes and bisons survive in a prairie habitat... 


HERE IS A VIDEO:-

                                                        HOPE YOU LIKE IT..:)

AMAZING SCIENCE...

STATIC ELECTRICITY... 
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        Have you ever walked across a nylon rug or carpet and felt a slight tingling sensation? This is an example of static electricity.

What Is Static Electricity?

     When electrical charges build up on the surface of a material, it is called static electricity. It is called 'static' because the flow of current is absent here. Therefore static electricity stays in one place. Static electricity is usually caused when materials are rubbed together or pulled apart. The result is that objects may be attracted to each other or even may cause a spark to jump from one object to the other.

Friction Electricity:-

         
            Static electricity is also termed as 'friction electricity'. When two objects rub against each other they generate electricity. This action is on account of friction. Therefore the electricity produced is known as friction electricity.
   
 Weather Factor:-:
          Static electricity can be experienced in winter when the air is very dry. In a dry weather, the air contains a large amount of charged particles, which cannot ground easily. During summer,the air is humid. The water in the air helps electrons move off you more quickly, so you cannot build up as big a static charge.

The Lightening Effect:-:
         Static electricity can also give a shock. Lightening is also a form of static electricity. When negatively charged clouds rub against each other, they get positively charged. This causes a huge spark of static electricity in the sky called as lightening... 

 Z FOR ZINC ...


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         Among the various nutrients, zinc is considered to be an important element required for the human body. Zinc is vital for many biological functions and is found in tissues, bones and cells in the body. Muscles and bones contain almost 90 per cent of zinc. Every cell in our body contains a trace of this vital element..








                                             

How Does Zinc Benefit Our Body?
        Besides cell division, Zinc is essential for the growth of height, weight and bone bone development in children. Zinc strongly effects the immune system and makes it capable to increase the 'T cells', which help to recognize and fight off infections. Zinc also activated areas of brain that receive and process information from taste and smell sensors. Zinc also activates areas of brain that receive and process information from taste and smell sensors. Zinc renews skin cells to heal body rash, cuts and wounds.Lack of sufficient zinc may lead to hair loss and dandruff. Zinc also aids vision and helps to fight vision defeats like night blindness and cataracts. 
                                             

 Which Food Is Rich In Zinc?
       Major sources of zinc in our food are meat, poultry,fish,whole cereals and dairy products. A complete complete balanced diet can ensure a sufficient amount of zinc vital to our body. Sea food is an excellent source of zinc intake; especially oysters.


How Much Should Be Our Daily Zinc Intake?
          Zinc should be included in our everyday diet. The recommended zinc intake for infants is 5 grams , for children its 10 grams and for adults its 15 grams..

 

                         NORMAL NAILS
                                             
                           

                                                                          

                                                                                                 DRY, BRITTLE NAILS
                                         

How Do We Know If We Are Getting Enough Zinc?
          Deficiency of zinc leads To stunted growth and impaired development in infants, children and adolescents. It may also affect proper function of brain. Most common deficiency symptoms are rough skin, dull hair brittle fingernails, reduced smell and taste..

                                                                  DULL HAIR


Health Caution:-
         Almost zinc is essential for a healthy body, too much of it can lead to reduced iron function and harm the immune system...

HOW DOES A PEN DRIVE WORK? 


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Very often you must have seen people inserting a small flat rectangular object into a computer. This small thing, known as a pen drive can hold a great amount of information in all forms..

What Is A Pen Drive?
        It is a type of Universal Serial Cable (USB) flash drive. It is a kind of memory card that can be plugged in a computer's USB port. It is termed "Pen Drive" with reference to its size. It is small and compact thus making it fit into the palm of our hand. It is often flat and rectangular like a highlighter pen. A pen drive is used to store data and has a storage capacity of 64 MB to 32 GB. It is removable and rewritable. It is mostly used as a backup for CD- ROMs or floppy disks.


Mechanism
        Pen drive consists of a small printed circuit board. This circuit board provides a strong base for the pen drive's form and also serves as a means to collect information. The circuit board consists of a small microchip within it. this microchip enables the pen drive to collect or feed in data. This process requires relatively low electrical power compared to CD-R's or Floppy. It is based on EEP-ROMS technology that allows writing and erasure process in a computer system..

 Transferring The Data
        The data that is to be transferred is connected through a computer programme. It is then read, transmitted or rewritten from a pen drive to a computer or vice versa. Thus the required data gets copied to any selective drive on the computer for further use.

The Working
          When a pen drive is connected to a USB port, it is activated. The USB  port gives the pen drive access to the information on a specific computer drive. Most of the pen drives are designed in such a way that they are compatible with any USB port on a computer.

Why Do We Have Toes On Our Feet?
       Our feet carry the weight of our entire body with the half of the toes. Toes help you to balance and carry your weight,your other four carry another quarter, and your heels carry the other half. Be thankful for your funny toes. Without them, you would probably flop right over!

Why Can You See Your Breath When It's Cold Outside?
        Your breath is reasonably warm and humid with invisible moisture (water vapour) in it. When this warm moist air meets the cooler air outside the body, the moisture- laden atmosphere from your lungs becomes chilled to the point where the water condenses into a fog or a small white cloud that you can see.The relative humidity, which depends upon water content and temperature, goes to 100 percent. As the breath gets further from the person's face the water content dilutes and the relative humidity goes down and the droplets go back into vapour form.

Why Don't Birds Sitting On Wires Get AN Electric Shock?
          An electric current can be very dangerous to a human bodyif it passes through the body to the earth beneath. That is why people were rubbing soles while fixing electrical wires, which insulate the body against the electric curent. Birds sitting on wires are not in contact with the ground and so the circuit of electric current does not complete keeping them safe..

GRAVITY FREE WATER.. (experiment yourself..)

Things You Will Need :-:
1) A glass filled right to the top with water.
2) A piece of cardboard.

Procedure:-:
1: Put the cardboard over the mouth of the glass making sure that no air bubbles enter the glass as you hold on to the cardboard.
2: Turn the glass upside down (over a sink or outside in a garden)
3: Take away your hand holding the cardboard.

What Happens?
       The cardboard and water stays in position. Even though the cup of water is upside down, the water stays in place. this defines gravity.

Why does this happen?
        With no air inside the glass, the air pressure from outside the glass is greater than the pressure of the water inside the glass. The extra air pressure manages to hold the card board in place, keeping you dry and your water where it should be, inside the glass.
           
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