2. Articles
  3. 6th Class

6th Class

NCERT Summary - The Living World

The Living World  
  • There is a variety of living organisms around us. Each one of them possesses a definite shape, size, structure and a colour pattern Similarly, things like living places (water and land), home (nests holes of trees), food habits, etc., give each organism a different identity.
  • Each kind of organism has many individuals. There are differences and similarities among the individuals of a kind based on which they can be recognised.
  • The individuals of a kind have a similarity in their body parts and their functioning. They eat the same kind of food and live in the same habitat. They cooperate among themselves for reproduction. Such a group of similar individuals is known as species. Each species has a name.
  • Each plant and animal has a scientific name consisting in two words. These scientific names help us in identifying each type of plant or more...
Catgeory: 6th Class

NCERT Summary - Air

Air  
  • Air is everywhere around us. No living being can survive without air.
  • The air covers the whole Earth. This cover of air is called the atmosphere. We live within the atmosphere. It extends over hundreds of kilometres. Up to a height of 16 km, we find clouds, rain and snow. As we go up in the atmosphere, there is less and less air. Jet planes usually fly above the clouds.
  • Air is matter. It occupies space and has mass. It has no colour and we can see through it. It fills all the space available to it.
  • Air is a mixture of several gases. Nearly fourth-fifths (4/5) of it is nitrogen. About one-fifth (1/5) of it is oxygen. Air also has a small amount of carbon dioxide, argon, helium, water vapour and dust particles.
  • At higher altitudes, air is thin and under the water, the more...
Catgeory: 6th Class

NCERT Summary - Water

Water   Water is the most common and important substance around us. Water is essential for almost every task we perform on a daily basis as well as for agriculture and industries.
  • All animals and plants need water. The human body has about 70 percent water by weight. Similarly the elephants and plants have 80 percent and 60 per cent water by weight respectively.
  • Animals drink water from ponds, streams and rivers. Plants take in water from the soil through their roots. From the roots, it goes to different parts of the plant. The plant uses this water for its life processes. It also loses water continuously from the tiny openings in the leaves. The process is called transpiration.
  • Seeds cannot germinate without water. Water helps animals in releasing heat which maintains their body temperatures.
  • A villager in India uses about 12 litres of water every day. more...
Catgeory: 6th Class

NCERT Summary - States of Matter

States of Matter  
  • We see a variety of objects around us. Generally, all objects are classified into three categories:
(i)   Solids (stone, wood, iron, etc.) (ii)   Liquids (water, oil, milk, etc.) (iii) Gases (oxygen, air, vapour, etc.)
  • Water can exist in all the three forms—solid, liquid, gas.
  • Solids and liquids have surfaces but gases do not have surfaces.
  • Liquids need a container to kept it, otherwise they tend to flow. On the other hand solids can be heaped anywhere.
  • All matters are made up of tiny particles called molecules. Molecules are constantly moving about. The higher the temperature, the greater is their motion. Also, when two molecules come closer they tend to stick together because there is a weak force of attraction between them.
  • The movement of molecules in solids, liquids and gases has been described:
    • more...
Catgeory: 6th Class

NCERT Summary - Electricity

Electricity   Charge
  • Charge is the fundamental quantity of electricity.
    • The classical study of electricity is generally divided into many areas:
  • Electrostatics: It deals with phenomena due to attractions or repulsions of electric charges but not dependent upon their motion.
  • Electric Current: The study of the forms of energy associated with the flow of electric charge.
  • Electromagnetism: The study of the forces acting between electrically charged particles in motion.
  • Electric Charge: (Often just called charge) It is of two types, i.e. positive (+) and negative \[\left( - \right)\] charges.
  • The term neutral does not refer to third type of charge, but to the presence in a region of positive and negative charges in equal amount.
  Methods of Charging
  • Friction: The frictional charging process results in a transfer of electrons between the two objects that are rubbed together.
  • Conduction: It more...
Catgeory: 6th Class

NCERT Summary - Magnet

Magnet  
  • A magnet is an object or a device that gives off external magnetic field.
  • Basically, it applies a force over a distance on other magnets, electrical currents, beams of charge, circuits, or magnetic materials.
  • The magnetic field of an object can create a magnetic force on other objects with magnetic fields. That force is what we call magnetism.
  • When a magnetic field is applied to a moving electric charge, such as a moving proton or the electrical current in a wire, the force on the charge is called Lorentz force.
  • Magnets have two poles, called the north (N) and south (S) poles. Two magnets will be attracted by their opposite poles, and each will repel the like pole of the other magnet.
  • Repulsion: When two magnetic objects have like poles facing each other, the magnetic force pushes them apart.
  • A magnetic field consists of imaginary more...
Catgeory: 6th Class

Motion and Measurement of Distances

  Motion and Measurement of Distances   Synopsis    
  • Different modes of transport are used to go from one place to another.
 
  • In ancient times, people used the length of a foot, the width of a finger, the distance of a step as units of measurement. This caused variation and inaccuracy and a need to develop a uniform system of measurement arose.
 
  •  Now, the International System of Units (S.I. unit) is followed all over the world.
 
  • A unit is a standardized quantity of a physical property, used as a factor to express quantities of that property.
 
  •  A standard unit is the measurement more...
Catgeory: 6th Class

Light, Shadows and Reflections

Light, Shadows and Reflection   Synopsis    
  • Objects which emit light energy by themselves are called luminous bodies.
          e.g., the sun, the stars, and glow worms.
  •  The bodies which do not have light energy of their own but reflect the light energy falling on them and hence are visible to us are called non-luminous bodies.
         e.g., the moon, objects around us, books, chairs, buildings, trees, etc.  
  • The moon appears bright due to the reflection of sunlight falling on it.
 
  • Transparent bodies are substances through which light is propagated easily,
          e.g., glass/water/etc.  
  • Translucent bodies are substances through which light is propagated partially.
          e.g., oil, ground more...
Catgeory: 6th Class

Electricity and Circuits

Electricity and Circuits   Synopsis  
  • Electricity is a form of energy widely used by man.
 
  • The simplest form of a circuit is when the two terminals of a cell are connected to the two terminals of a bulb through a switch.
 
  • In an electric circuit/the direction of current is taken from the positive terminal to the negative terminal of the source.
 
  • When a circuit is complete, current (charges) starts flowing. It stops flowing when the circuit breaks at a point.
 
  • A switch is used to break or complete a circuit.
 
  • Materials that allow electricity to pass through them are called conductors. Most of the metals more...
Catgeory: 6th Class

Fun with Magnets

Fun With Magnets   Synopsis  
  • Substances that can attract iron are called magnets.
 
  • Substances can be divided into magnetic and non-magnetic substances.
 
  • Substances that are attracted by a magnet are called magnetic substances. Usually things made up of iron, nickel or cobalt are magnetic.
 
  • Substances that are not attracted by a magnet are called nan-magnetic substances. Paper, plastic and wood are a few examples of non-magnetic substances.
 
  • Magnets are divided into two groups - natural and artificial magnets. Magnetite (lodestone) is a naturally occurring magnet.
 
  • Artificial magnets can be of many shapes and are commonly used in different articles like electric bells, radio, etc.
more...
Catgeory: 6th Class

Articles Categories


Archive


Trending Articles

You need to login to perform this action.
You will be redirected in 3 sec spinner