Jagriti
40
Posts
5
followers
2
following
2695 points 0 status 7 Lessons 1 Quizes 30 Notes 1 Question 0 Answers 0 Media
Changing the face can change nothing but facing the change can change everything.
Education Jean Paul's High School, Ara
Work And Goals 1st year media student
Thomson, Rutherford and Bohr model of atom.
Thomson's atomic model proposed that an atom is uniform sphere of positive charges (due to presence of protons ) as well as the negative charges (
Charged Particles in Matter | Electrons and Protons
A matter is consists of many atoms and an atom is consists of electrons, protons and neutrons. of these electrons and protons are the equally oppo
Structure of Human Ear and Hearing Aid
A hearing aid is a battery-operated, an electronic device that receives sound from the atmosphere and converts it into electrical signals. Humans
SONAR : “Sound Navigation and Ranging”
“Sonar” can be defined as “ Sound Navigation and Ranging” This device is used to measure the distance, direction and speed of underwater objects by
Applications of Ultrasound (ultrasonic sound waves)
The high frequency waves are known as ultrasound. ultrasonography is also done to examine the foetus during pregnancy to detect defect or growth abn
How do bats search their prey?
Bats generate high-pitched ultrasonic waves which are then reflected from the obstacle or prey and return back to bat’s ear.
Sound: Reverberation, and Range of Hearing
Reverberation is the persistence of a sound after a sound is produced. A reverberation is created when a sound signal is reflected multiple times un
Speed of sound in different media
The speed of the sound in a medium is affected by the 1. It depends upon the density of the medium. For instance - The speed of sound is maximum
Sound waves : Different Characteristics - Frequency, Amplitude, Pitch, Timber
Compression (C) – These are the regions where particles are crowded together and are represented by the upper portion of the curve that is known a
Sound: Production and propagation
The basic way for the production of Sound is “vibration”. When an object vibrates it produces sound. The matter or substance through which sound is
Molecular Mass and Mole Concept
The summation of the atomic masses of all the atoms in a molecule of the substance is known as the molecular mass of that substance. It is expresse
Chemical Formula of compounds and rules for writing
The symbolic representation of composition is termed as the chemical formula of a compound. Two things are required to learn and write a chemical f
Molecules and ions
A molecule is, in general, a group of two or more atoms that are chemically bounded together by certain attractive forces. For example, Two atom of
Waves and sound - types, production, propagation and characteristics.
As the object moves backward and forward consecutively, a series of compression and rarefaction will be created in the air which will ultimately for
Atom, Atomic Mass, Atoms Existence And Nomenclature Of Elements
Atoms are extremely small, they are smaller than anything that we can imagine or compare with.For example – more than millions of atoms when stacked
Laws Of Chemical Combination And Dalton's Atomic Theory
Lavoisier and Joseph L. Proust proposed two laws of chemical combination. during a chemical reaction, the sum of masses of the reactant and the pro
Atoms, Molecules And Ions
The Building block of all matter is called an atom. Atoms are extremely small, smaller than anything that we can imagine or compare with. For exam
What Is Meiosis?
we all know cell is the basic unit of life. Every organisms growth is determined by cell division. Here are two terms mitosis and meiosis for cell d
Cell Parts And Cell Organelles | Cell Biology
Living cells are bound by a membrane called the plasma membrane, also known as the cell membrane controls entry and exit of any substance like min
Cell Division By Meiosis
Meiosis is the process by which a single cell is divided twice into four cells by containing half of the genetic information or chromosome of the pa
Which Is Known As The Power House Of The Cell?
Which is known as the power house of the cell?
Cell Division by Mitosis | All stages of mitotic cell division
Mitosis occurs continuously inside the body or somatic cells.Daughter cells have a diploid number (2N) of chromosomes like their parent pl
Function and characteristics of cells
The different organs made by different kinds of cells perform
different functions. For example – the stomach performs digestion of food, lungs
pe
Some Important Facts Related To The Discovery Of Cell
Discovery
of cell was proposed by Robert Hooke in 1665 and he himself saw the cell under
microscope and thus credited with the discovery of cell
Three Laws of Motion
Motion is a kind of state in which some distance is
being covered with respect to the time that possesses some speed. We have a well-flourished
ge
Cell - The Unit Of Life
Cells are the structural, functional, fundamental and biological unit of life. These are a building block or smaller unit from which all organis
Types Of Motion in Physics
This motion is a kind of motion in which an object moves from one point to another uniformly in the same line or direction. Translational motion.
Some important definitions related to motion | Scalar and Vector Quantities
Scalar quantity : This physical quantity have it’s own magnitude but not specific direction. Example- distance, speed etc.Vector quantity :This ph
Motion and Laws of Motion
·
Rest and motion are relative
states. It means an object which is at rest at one frame of reference can be in
motion in another fram
Dimensions of Fundamental Quantities
The power to which fundamental quantities must be raised in order to express the given physical quantity are called its dimensions.
Fundamental and Derived Quantities
The quantities that are independent of other quantities are called fundamental quantities. The quantities that are derived using the fundamental q
Physical Quantities
A quantity that can be measured and by which various physical happenings can be explained and expressed in the form of laws is called a physical qua
Unit, dimensions and measurement
Unit, Dimensions and measurementsPhysical quantityA quantity that can be measured and by which various physical happenings can be explained and expr
The five kingdom Classification, characteristic features and differences.
Robert Whittaker grouped organisms into
Classification of organisms - taxonomy
The domain is the highest order and species is the lowest order category.Biologists, such as Ernst Haeckel (1894), Robert Whittaker (1959)
and Car
Diversity in living organisms
Earth stands for life. A place or a heaven where diverse life forms exists. There are about 20 lac organism known on Earth with variety of difference
Classification of organisms
There are billions of species on earth with tones of differences and similarities too. Classification is important to categorise and find deta
Chemical composition of matter
chemical composition of matter is the classification of matter on the basis of it's chemical properties. It is further divided into 3 types
Physical composition of matter
Although there are so many factors behind the existence of physical
composition of matter but here basically we will be dealing with the
f
States of matter
Matter is anything that have definite mass, occupies space, can exert pressure, can produce physical resistance and whose existence can be felt