Sound can be summarized in 3 sentences:
Sound is a physical phenomenon caused by vibrations that stimulate hearing. The range of human hearing is between 15-20,000 Hz. Sound waves can travel through air, water and other substances, but the speed varies depending on the medium.
Electric current and its effect CLASS-8Ravi Prakash
Electric current
HEATING EFFECT OF CURRENT
MAGNETIC EFFECT OF CURRENT
ELECTROMAGNET
ELECTRIC BELL
ADVANTAGE OF HEATING EFFECT
DISADVANTAGE OF HEATING EFFECT
SYMBOLS OF ELECTRIC COMPONENTS
MINIATURE CIRCUIT BREAKER (MCB)
ELECTRIC FUSE
Complete and comprehensive study of the entire chapter with attractive pictorial representation of topic being discussed and Studied. Ideal material for students to get a gist of the entire Chapter, make projects, complete ppt slide presentation for self study and group discussion.
Electric current and its effect CLASS-8Ravi Prakash
Electric current
HEATING EFFECT OF CURRENT
MAGNETIC EFFECT OF CURRENT
ELECTROMAGNET
ELECTRIC BELL
ADVANTAGE OF HEATING EFFECT
DISADVANTAGE OF HEATING EFFECT
SYMBOLS OF ELECTRIC COMPONENTS
MINIATURE CIRCUIT BREAKER (MCB)
ELECTRIC FUSE
Complete and comprehensive study of the entire chapter with attractive pictorial representation of topic being discussed and Studied. Ideal material for students to get a gist of the entire Chapter, make projects, complete ppt slide presentation for self study and group discussion.
PowerPoint Presentation on the topic - 'Atoms And Molecules'.
For Class:- 9th
Created By - 'Neha Rohtagi'.
I hope that you will found this presentation useful and it will help you out for your concept understanding.
Thank You!
Please give feedbacks and suggestions to get presentations on more interesting topics.
Chapter - 18, Pollution of Air and Water, Science, Class 8Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
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Chapter - 18, Pollution of Air and Water, Science, Class 8
AIR
POLLUTION
AIR POLLUTION
AIR POLLUTANTS
EFFECTS OF AIR POLLUTION
HEALTH EFFECTS OF AIR POLLUTION
ACID RAIN
GREENHOUSE EFFECT
GLOBAL WARMING
CAUSES OF AIR POLLUTION
CASE STUDY OF THE TAJ MAHAL
ACTIONS TO PREVENT AIR POLLUTION
WATER POLLUTION
HOW WATER GETS POLLUTED?
EFFECTS OF WATER POLLUTION
ACTION POINTS TO PREVENT WATER POLLUTION
EUTROPHICATION
POTABLE WATER
HOW IS WATER PURIFIED?
ACTION KEYS TO PREVENT WATER POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
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Chapter - 13, Sound, Science, Class 8
WHAT IS SOUND?
INTRODUCTION TO SOUND
SOUND-PRODUCING MUSICAL INSTRUMENTS
SOUND PROPERTIES
HOW DO HUMANS PRODUCE SOUND?
HOW SOUND PROPAGATE IN A MEDIUM?
SOUNDS BY HUMANS
THERE ARE THREE MAJOR PARTS OF THE HUMAN EAR
AMPLITUDE, TIME PERIOD, AND FREQUENCY
THE LOUDNESS OF A SOUND
PITCH OF THE SOUND
AUDIBLE AND INAUDIBLE SOUNDS
NOISE AND MUSIC
NOISE POLLUTION
CAUSES OF NOISE POLLUTION
EFFECTS OF NOISE POLLUTION
PREVENTION OF NOISE POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
Presentation On Winds,Storms, & Cyclones....Sourav Shaw
This is the best & wonderful presentation for the students who gets projects in school,colleges on winds,storms & cyclones.This presentation makes you easier to submit your project within the time limits.It shall may saves your time.
SOUND
MUSICAL INSTRUMENT
PROPAGATION OF SOUND
PRODUCTION OF SOUND MUSICAL INSTRUMENTS
SPEED OF A SOUND
WOODWINDS INSTRUMENTS
String INSTRUMENTS
Percussion INSTRUMENTS
Brass INSTRUMENTS
SOUND PRODUCED BY HUMANS
SPEED OF LIGHT V/S SOUND
SOUND PRODUCED BY ANIMAL
VIBRATION & OSCILLATION
LOUDNESS AND PITCH OF SOUND
HUMAN EARS
PERSISTENCE OF HEARING
Echo & REVERBERATION
AUDIBLE AND INAUDIBLE SOUND
NOISE AND MUSICAL SOUND
Noise pollution
HEARING IMPAIRMENT
SIGN LANGUAGE
Reflection of sound
Uses of multiple reflection of sound
SONAR
we hear many type of sound from various sources like humans, birds, bells, machines, vehicles, televisions, radios, etc. Sound is a form of energy which produces a sensation of hearing in our ears.
The presentation which increases your knowledge about sound.
by Mohammad Ali.
Topics Included
• Introduction
• Metals
→ Physical properties of metals
→ Chemical Properties of metals
• Non-metals
→ Physical properties of non-metals
→ Chemical Properties of metals
• Difference between metals and non-metals
• Reaction with Acids
• Reaction with Bases
This slide describes the idea of work and work-done and various idea and principles about energy and its utilization. It defines the basic aspects of work and how it is related to each other
PowerPoint Presentation on the topic - 'Atoms And Molecules'.
For Class:- 9th
Created By - 'Neha Rohtagi'.
I hope that you will found this presentation useful and it will help you out for your concept understanding.
Thank You!
Please give feedbacks and suggestions to get presentations on more interesting topics.
Chapter - 18, Pollution of Air and Water, Science, Class 8Shivam Parmar
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 18, Pollution of Air and Water, Science, Class 8
AIR
POLLUTION
AIR POLLUTION
AIR POLLUTANTS
EFFECTS OF AIR POLLUTION
HEALTH EFFECTS OF AIR POLLUTION
ACID RAIN
GREENHOUSE EFFECT
GLOBAL WARMING
CAUSES OF AIR POLLUTION
CASE STUDY OF THE TAJ MAHAL
ACTIONS TO PREVENT AIR POLLUTION
WATER POLLUTION
HOW WATER GETS POLLUTED?
EFFECTS OF WATER POLLUTION
ACTION POINTS TO PREVENT WATER POLLUTION
EUTROPHICATION
POTABLE WATER
HOW IS WATER PURIFIED?
ACTION KEYS TO PREVENT WATER POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
I have expertise in making educational and other PPTs. Email me for more PPTs at a very reasonable price that perfectly fits in your budget.
Email: parmarshivam105@gmail.com
Chapter - 13, Sound, Science, Class 8
WHAT IS SOUND?
INTRODUCTION TO SOUND
SOUND-PRODUCING MUSICAL INSTRUMENTS
SOUND PROPERTIES
HOW DO HUMANS PRODUCE SOUND?
HOW SOUND PROPAGATE IN A MEDIUM?
SOUNDS BY HUMANS
THERE ARE THREE MAJOR PARTS OF THE HUMAN EAR
AMPLITUDE, TIME PERIOD, AND FREQUENCY
THE LOUDNESS OF A SOUND
PITCH OF THE SOUND
AUDIBLE AND INAUDIBLE SOUNDS
NOISE AND MUSIC
NOISE POLLUTION
CAUSES OF NOISE POLLUTION
EFFECTS OF NOISE POLLUTION
PREVENTION OF NOISE POLLUTION
Every topic of this chapter is well written concisely and visuals will help you in understanding and imagining the practicality of all the topics.
By Shivam Parmar (Entrepreneur)
Presentation On Winds,Storms, & Cyclones....Sourav Shaw
This is the best & wonderful presentation for the students who gets projects in school,colleges on winds,storms & cyclones.This presentation makes you easier to submit your project within the time limits.It shall may saves your time.
SOUND
MUSICAL INSTRUMENT
PROPAGATION OF SOUND
PRODUCTION OF SOUND MUSICAL INSTRUMENTS
SPEED OF A SOUND
WOODWINDS INSTRUMENTS
String INSTRUMENTS
Percussion INSTRUMENTS
Brass INSTRUMENTS
SOUND PRODUCED BY HUMANS
SPEED OF LIGHT V/S SOUND
SOUND PRODUCED BY ANIMAL
VIBRATION & OSCILLATION
LOUDNESS AND PITCH OF SOUND
HUMAN EARS
PERSISTENCE OF HEARING
Echo & REVERBERATION
AUDIBLE AND INAUDIBLE SOUND
NOISE AND MUSICAL SOUND
Noise pollution
HEARING IMPAIRMENT
SIGN LANGUAGE
Reflection of sound
Uses of multiple reflection of sound
SONAR
we hear many type of sound from various sources like humans, birds, bells, machines, vehicles, televisions, radios, etc. Sound is a form of energy which produces a sensation of hearing in our ears.
The presentation which increases your knowledge about sound.
by Mohammad Ali.
Topics Included
• Introduction
• Metals
→ Physical properties of metals
→ Chemical Properties of metals
• Non-metals
→ Physical properties of non-metals
→ Chemical Properties of metals
• Difference between metals and non-metals
• Reaction with Acids
• Reaction with Bases
This slide describes the idea of work and work-done and various idea and principles about energy and its utilization. It defines the basic aspects of work and how it is related to each other
This is basic document that explain about sound waves in extreme condition audibility when we modulate the high frequency ultra-sounds with the low frequency audio signals. By super-hetrodyne receivers we can build this thing in reality by mixing those signals to get audibility and directionality by going to audible frequency and we making that to audible by this technique.
Introduction to the study of acoustics, basic terminology, sound and distance inverse square law; absorption of sound, sound absorption co-efficient. Reverberation time, Sabines formula, various sound absorbing materials. Behavior of sound in enclosed spaces, Acoustical defects
Similar to R.TANUJ Sound Class IX Presentation (20)
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
2. Sound, physical phenomenon that stimulates the sense of hearing. In
humans, hearing takes place whenever vibrations of frequencies from
15 hertz to about 20,000 hertz reach the inner ear. The hertz (Hz) is a
unit of frequency equaling one vibration or cycle per second. Such
vibrations reach the inner ear when they are transmitted through air.
The speed of sound varies, but at sea level it travels through cool, dry
air at about 1,190 km/h (740 mph). The term sound is sometimes
restricted to such airborne vibrational waves. Modern physicists,
however, usually extend the term to include similar vibrations in other
gaseous, liquid, or solid media. Physicists also include vibrations of
any frequency in any media, not just those that would be audible to
humans. Sounds of frequencies above the range of normal human
hearing, higher than about 20,000 Hz, are called ultrasonic.
3.
4. Sounds can be produced at a desired frequency by different
methods. Sirens emit sound by means of an air blast
interrupted by a toothed wheel with 44 teeth. The wheel
rotates at 10 revolutions per second to produce 440
interruptions in the air stream every second. Similarly, hitting
the A above middle C on a piano causes a string to vibrate at
440 Hz. The sound of the speaker and that of the piano string
at the same frequency are different in quality, but correspond
closely in pitch. The next higher A on the piano, the note one
octave above, has a frequency of 880 Hz, exactly twice as high.
Similarly, the notes one and two octaves below have
frequencies of 220 and 110 Hz, respectively. Thus, by definition,
an octave is the interval between any two notes whose
frequencies are in a two-to-one ratio.
5. The amplitude of a sound wave is the degree of
motion of air molecules within the wave, which
corresponds to the changes in air pressure that
accompany the wave. The greater the amplitude of
the wave, the harder the molecules strike the
eardrum and the louder the sound that is
perceived. The amplitude of a sound wave can be
expressed in terms of absolute units by measuring
the actual distance of displacement of the air
molecules, the changes in pressure as the wave
passes, or the energy contained in the wave.
6. • Range of hearing
Ultrasound
Infrasound
• Applications of Ultrasound
Ultrasonics
• Diagrams
Topics covered
7. Ultrasound is an oscillating sound pressure wave with a frequency
greater than the upper limit of the human hearing range.
Ultrasound is thus not separated from 'normal' (audible) sound based on
differences in physical properties, only the fact that humans cannot hear
it.
Although this limit varies from person to person, it is approximately 20
kilohertz (20,000 hertz) in healthy, young adults.
Ultrasound devices operate with frequencies from 20kHz up to several
gigahertz.
Range Of Hearing
Ultrasound
8. Ultrasonics is the applicationof ultrasound. Ultrasoundcan be usedfor
medical imaging, detection, measurementand cleaning.
At higher power levels, ultrasonics is useful for changing the chemical
properties of substances
The potential for ultrasonic imaging of objects, was recognizedby Sokolov in
1939but techniques of the time producedrelatively low-contrast images with
poor sensitivity.
The power density is generally less than1 wattper square centimetre, to avoid
heating and cavitationeffects in the object under examination.
9. The potential for ultrasonicimaging of objects, was recognizedby
Sokolov in 1939 but techniques of the time producedrelatively low-
contrast images withpoor sensitivity.
The power density is generally less than1 watt per square centimetre, to
avoid heating and cavitationeffects in the object under examination.
Highpower applications of ultrasoundoftenuse frequencies between
20 kHz and a few hundredkHz. Intensities canbe very high; above 10
watts per square centimeter, cavitation can be inductedin liquidmedia,
and some applications use up to 1000 watts per square centimeter.
Such highintensities can inducechemical changes or produce
significant effects by directmechanical action, and can inactivate
harmful bacterias.
10. Sonar (originally an acronym for SOund Navigation And Ranging) is a
technique that uses sound propagation (usually underwater, as in
submarine navigation) to navigate, communicate with or detect objects
on or under the surface of the water, such as other vessels.
Two types of technology share the name "sonar": passive sonar is
essentially listening for the sound made by vessels; active sonar is
emitting pulses of sounds and listening for echoes.
Sonar may be used as a means of acoustic location and of measurement
of the echo characteristics of "targets" in the water.
11. Sonar may also be used in air for robot navigation.
The term sonar is also used for the equipment used to generate
and receive the sound.
The acoustic frequencies used in sonar systems vary from very
low (infrasonic) to extremely high (ultrasonic).
The study of underwater sound is known as underwater
acoustics or hydroacoustics.
12. The detection, classification and localisation performance of a sonar depends on
the environment and the receiving equipment, as well as the transmitting
equipment in an active sonar or the target radiated noise in a passive sonar.
The sound reflection characteristics of the target of an active sonar, such as a
submarine, are known as its target strength.
A complication is that echoes are also obtained from other objects in the sea such
as whales, wakes, schools of fish and rocks.
Passive sonar detects the target's radiated noise characteristics. The radiated
spectrum comprises a continuous spectrum of noise with peaks at certain
frequencies which can be used for classification.