LIGHT BASIC FACTS

 Light is a form of energy. Light help as to see objects around as. Light always travels in straight line. Speed of light in vacuum is 3 x 10⁸ m/s.

RAY OF LIGHT

A ray of light is the straight line representing the direction of motion of light energy in a medium.

LUMINOUS OBJECTS 

Some objects has the ability to gives out or emit light of their on. Such type of objects are known as luminous objects.
eg:- sun, electric lamps, touch bulbs etc

TRANSPARENT, OPAQUE AND TRANSLUCENT OBJECTS 

Some objects doesn’t allows light to pass through it, so we can’t see through such objects at all. Objects which have the property like this is called opaque objects.
eg:- wood, hard boards

Some objects allows light to pass through it, so we are able to see clearly through it. Such type of objects are known as transparent objects.
eg:- glass, water 

There are some objects through which we can see, but not very clearly. Such objects allows only partial light to pass through it. They are known as translucent objects.
eg :- oil paper

SHADOW

When light fall on an opaque object in any angle less than 90⁰ a dark spot in the shape of that object is formed in the opposite side of the light source. That dark spot is shadows.

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WORKING MODEL FOR SCIENCE EXHIBITION- DANCING BALLOON

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 DANCING BALLOON  SCIENCE EXHIBITION PROJECT FOR HIGH SCHOOL STUDENTS  A working model for science exhibition ‘THE DANCING BALLOON’ is an application of Newton’s third law of motion- Every action has an equal and opposite reaction and also explains about effect of less friction helps in the motion of a body. MATERIALS REQUIRED  1- Balloon  2- Compact disk (CD) 3- Glue 4- Bottle cap PROCEDURE  *Put a hole on bottle cap(at the centre)  * Using glue stick the bottle cap at the top of CD (cap should be fixed on rough and non shiny surface of CD . Make sure no gap between CD ad the bottle cap) * Keep it aside still glue dries up to make strong bond between CD and bottle cap * Inflate the ballon and fix it on bottle cap as shown in video  * And keep CD on plane surface and release it. RESULT Balloon/CD arrangement start moving around the plain surface automatically . SCIENTIFIC EXPLANATION  Due to the force applied by the air inside the balloon it start moves automatically. ( air released th
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This blog contents are specifically for high school students all over the world . Those who are preparing for GCSE physics and GCSE chemistry have lot of topic to refer from this blog. PHYSICS   CHEMISTRY   SCIENCE IN DAILY LIFE  SCIENCE EXHIBITION PROJECTS 
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ELECTRIC CHARGES

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TYPE OF CHARGES  There are two type of electric charges, positive charge (+) and negative charge(-) PROPERTIES OF ELECTRIC CHARGES Unlike charges, always attract each other.  Positive charge kept near negative charge/ negative charge kept near positive charge, attract each other. Like charges always repel each other.  Positive charge kept near positive charge / negative charge kept near negative charge, repel each other. PRESENCE OF CHARGE IN MATTER All the materials around as are generally known as matters (matter is anything that can occupy space and have mass). All the matters are made up of tiny building unites called atoms. Atoms are made up of some small subatomic particles – electrons, protons, neutrons. The centre part of the atom is known as nuclear , which contain protons and neutrons . Protons are positively charged particles and neutrons are chargeless particle (neutral). And electrons which are revolving around the nuclear of an atom in fixed orbits has negative charge.
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MAGNETS

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Magnets are substances which can attract some materials like iron, steel, nickel etc.  Different types of magnets  Based on shape of the magnets we can classify magnets into different names. Pictures and names of som magnets are given below                   A magnet always has 2 poles a north pole and a south pole ( when a magnet is cut into two pieces, the new pieces formed will act as separate magnets with a north pole and south pole for each                                     
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