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

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

What are Noble Gases? Example and noble gases name

What are Noble Gases? Example and noble gases name Noble Gases Noble gases, sometimes known as inert gases or erosions, are part of the modern periodic table's 18th group. This group is made up of the following individuals: Helium is a kind of gas (He) Neon (Ne) Argon is a gas (Ar) Krypton  (Kr) Xenon is a kind of xenon gas (Xe) Radon is a gas that can cause cancer (Rn) Noble gases exist in a gaseous state under typical temperature and pressure conditions. Because all noble gases have stable electronic structures, they have very little chemical reactivity. They are monoatomic gases that do not readily form molecules. 'ns2np6' represents the basic electrical configuration of noble gases. As a result, noble gases' outermost valence shells can be deemed 'complete.' The chemical inertness of the group of 18 elements is due to this. Because of the stability of certain elements, these gases form a group. These stable elements' crusts are totally filled. Regardles...
Post a Comment
Read more

CS Executive

At  Takshila Learning  we provide you Video Lecture of best faculties in India. We assure you not only the best quality of videos but also best content. Our teachers way of teaching, presentation and explanation is very simple and unique. Why Takshila Learning? We can give you 10 top reasons why you should take CS Executive Online Video Coaching Classes Lectures from Takshila Learnings. We are providing online classes of CS Executive for last 5 years (almost  oldest in the market ) We pick  best teachers  for every subjects. We don’t provide updates only with old videos. Infact we provide  new updated classes  for every attempt Our teachers update notes for every attempt. Videos and notes are  highly exams oriented . Our teachers  cover last 5 attempts question papers  along with ICSI Course content. Our video classes  includes live practical examples  to help you understand easily. Our structure of our  fee ...
Post a Comment
Read more