Skip to main content

Some Natural Phenomena Chapter 14 - 8th Class Science

Some Natural Phenomena Chapter 14 - 8th Class  Science 

Lightning occurs because of the transfer of massive electric charges. Natural disasters sometimes cause tremendous damage to life and property.
Electric charges
All matter is made up of atoms. Every atom is made up of positively charges particles, negatively charges particles and neutral particles. The positively charged particles of an atom are called protons. The negatively charged particles are called electrons.
The atom as a whole consists of an equal number of positive and negative charges and it is called electrically neutral.
If the charge is not balanced, the atom will have a positive charge if protons are more in number than electrons and negative charge if electrons are more in number than protons.
Objects with the same type of charge brought together will repel each other. Objects with opposite charge will attract each other.
Online CBSE NCERT Class 8 Science Chapter 14 - Some Natural Phenomena,  NCERT Solutions for class 8
From above we can conclude easily that like charges repel each other and unlike charges attract each other.
Animated classes for Class 8th Science are available, click on Class 8 online classes.
Charging an object
An object can be given an electric charge by using the below-mentioned methods.
  • Charging by induction-Charging is done without the charged body touching the object that has to be charged.
Eg: -A charged glass rod is brought close to a metal object but does not touch it.
  • Charging by friction –This kind of charging is done by rubbing one material with another.
Eg:-Rubbing glass with silk
  • Charging by the conduction-An object can also be charged by making it touch a charged body. The nature of the charge acquired will be the same as that of the charging body.

NCERT solutions for class 8, more notes, worksheets, sample papers, live classes and doubt sessions, register with Takshila Learning.
Labels:

Comments

Post a Comment

Thank you we will contact ASAP.

Popular posts from this blog

Why is Hindi Day celebrated on 14 September?

Why is Hindi Day celebrated on 14 September? After independence, the Government of India set a goal to give an ideal form to the mother tongue of the country and set a target for grammar and orthography using the Devanagari script to bring standardization in writing. Subsequently, on September 14, 1949, the Constituent Assembly decided by a vote that Hindi would be the official language of India. To propagate the importance of this decision and to spread Hindi in every region, India is celebrating Hindi Day every year from 1953 to 14 September, at the request of Rashtrabhasha Prachar Samiti, Wardha. Apart from this, 14 September is also the birthday of Rajendra Singh, who worked tirelessly to make Hindi the official language of India. Hindi Day is observed every year on 14 September to mark the importance of the Hindi language in the country. The Hindi language is one of the oldest languages, which derives most of its academic vocabulary from the Sanskrit language written in the Deva
Post a Comment
Read more

Magnetic and non-magnetic material Class 6 Science

Magnetic and non-magnetic material  Class 6 Science A magnet is a substance that is drawn to certain magnetic materials like iron, cobalt, and nickel. Magnets have the ability to draw iron to them. Natural magnets are rocks that naturally draw iron. Non-magnetic materials include things like wood, rubber, coins, feathers, leather, etc. that are not drawn to iron. Magnet characteristics It pulls magnetic materials, such as iron. The magnet's two ends are referred to as its poles. The magnet's diametrically opposed poles are drawn together. Heating, hammering, or dropping causes it to lose its characteristics. On the basis of properties types of Magnets Temporary magnets are those magnets that are magnetic for only a little duration. Typically, iron, cobalt, or nickel are used to make them. When they are close to the powerful magnet, they act like a magnet. When they are yanked away from the powerful magnet, they stop being magnetic. Permanent magnets are magnets that have magne
Post a Comment
Read more