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A comprehensive guide to KS3 waves revisioncovering... Show more
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Waves Intro KS3 Yr9 Science
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6 Nov 2022
•
KS3 Year 9 Science: Waves Summary and Revision
Sound Waves and Wave Speed
This section explores sound waves KS3 concepts and wave speed calculations, essential for KS3 Waves revision and BBC Bitesize waves KS3 study.
Sound waves are a type of energy created when sources vibrate particles in various mediums. Key points about sound waves include:
- Measured in decibels
- Travel best in solids due to particle density
- Cannot travel in a vacuum
- Propagate as longitudinal waves
- Are pressure waves with repeating patterns of high and low pressure regions
Vocabulary: Auditory range - The range of frequencies a species can hear, from lowest to highest.
Wave speed, also known as wave velocity, is crucial in understanding wave propagation. The formula for wave speed is:
Speed = Wavelength × Frequency
Highlight: Wave speed can be calculated using a triangle diagram, which is a helpful tool for KS3 waves questions.
Light waves, also called electromagnetic radiation, have unique properties:
- Consist of electric and magnetic parts
- Are transverse waves
- Visible light is a small portion of the electromagnetic spectrum
- Higher frequency waves are less visible to the human eye
Example: The electromagnetic spectrum includes visible light, as well as invisible waves like radio waves and gamma rays.
Understanding these concepts is crucial for mastering KS3 year 9 science waves summary GCSE and BBC Bitesize waves KS4 materials.
Page 2: Sound Waves and Wave Speed
This section covers Sound waves KS3 concepts in detail, explaining how sound energy propagates through different mediums and introduces wave speed calculations.
Definition: Sound waves are pressure disturbances that travel through mediums as longitudinal waves.
Vocabulary:
- Decibels : Unit of sound measurement
- Wave Velocity: Scientific term for wave speed
- Auditory Range: Frequency range detectable by species
Example: A vacuum jar demonstration shows how sound cannot travel through a vacuum due to lack of medium particles.
Highlight: The speed of a wave can be calculated using the formula: Speed = Wavelength × Frequency
Wave Features and Fundamentals
Understanding wave features is crucial for KS3 waves questions and KS3 Waves revision. This section covers key concepts like rest position, displacement, and amplitude.
Definition: Waves in physics are oscillations or disturbances that transfer energy from one point to another without permanently displacing the medium's particles.
Wave features include:
- Rest position: The undisturbed state of particles when not vibrating.
- Displacement: The distance of a point in the medium from its rest position.
- Peak/Crest: The highest point above the rest position.
- Trough: The lowest point below the rest position.
- Amplitude: The maximum displacement from the rest position, measured in meters.
Vocabulary: Amplify - To increase the amplitude of sound, resulting in a louder effect.
- Wavelength: The distance of a full wave cycle, measured peak-to-peak or trough-to-trough.
- Time period: The duration of a full wave cycle.
- Frequency: The number of waves passing a point per second, measured in hertz .
Highlight: Waves travel fastest through solids, moderately in liquids, and slowest in gases due to particle density and compactness.
Types of waves include:
- Transverse waves: Oscillations perpendicular to the wave's direction.
- Longitudinal waves: Vibrations parallel to the wave's direction.
- Surface waves: Seismic waves trapped along Earth's interface.
Example: Transverse waves can be visualized as ripples, such as the vibrations of a guitar string.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
KS3 Year 9 Science: Waves Summary and Revision
Overall Summary
A comprehensive guide to KS3 waves revision covering fundamental wave properties, types, and behaviors. This educational material explores wave mechanics, sound, and light waves, essential for GCSE preparation.
- Wave features including rest position, displacement, amplitude, and frequency
- Detailed... Show more
Sound Waves and Wave Speed
This section explores sound waves KS3 concepts and wave speed calculations, essential for KS3 Waves revision and BBC Bitesize waves KS3 study.
Sound waves are a type of energy created when sources vibrate particles in various mediums. Key points about sound waves include:
- Measured in decibels
- Travel best in solids due to particle density
- Cannot travel in a vacuum
- Propagate as longitudinal waves
- Are pressure waves with repeating patterns of high and low pressure regions
Vocabulary: Auditory range - The range of frequencies a species can hear, from lowest to highest.
Wave speed, also known as wave velocity, is crucial in understanding wave propagation. The formula for wave speed is:
Speed = Wavelength × Frequency
Highlight: Wave speed can be calculated using a triangle diagram, which is a helpful tool for KS3 waves questions.
Light waves, also called electromagnetic radiation, have unique properties:
- Consist of electric and magnetic parts
- Are transverse waves
- Visible light is a small portion of the electromagnetic spectrum
- Higher frequency waves are less visible to the human eye
Example: The electromagnetic spectrum includes visible light, as well as invisible waves like radio waves and gamma rays.
Understanding these concepts is crucial for mastering KS3 year 9 science waves summary GCSE and BBC Bitesize waves KS4 materials.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
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Page 2: Sound Waves and Wave Speed
This section covers Sound waves KS3 concepts in detail, explaining how sound energy propagates through different mediums and introduces wave speed calculations.
Definition: Sound waves are pressure disturbances that travel through mediums as longitudinal waves.
Vocabulary:
- Decibels : Unit of sound measurement
- Wave Velocity: Scientific term for wave speed
- Auditory Range: Frequency range detectable by species
Example: A vacuum jar demonstration shows how sound cannot travel through a vacuum due to lack of medium particles.
Highlight: The speed of a wave can be calculated using the formula: Speed = Wavelength × Frequency
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Wave Features and Fundamentals
Understanding wave features is crucial for KS3 waves questions and KS3 Waves revision. This section covers key concepts like rest position, displacement, and amplitude.
Definition: Waves in physics are oscillations or disturbances that transfer energy from one point to another without permanently displacing the medium's particles.
Wave features include:
- Rest position: The undisturbed state of particles when not vibrating.
- Displacement: The distance of a point in the medium from its rest position.
- Peak/Crest: The highest point above the rest position.
- Trough: The lowest point below the rest position.
- Amplitude: The maximum displacement from the rest position, measured in meters.
Vocabulary: Amplify - To increase the amplitude of sound, resulting in a louder effect.
- Wavelength: The distance of a full wave cycle, measured peak-to-peak or trough-to-trough.
- Time period: The duration of a full wave cycle.
- Frequency: The number of waves passing a point per second, measured in hertz .
Highlight: Waves travel fastest through solids, moderately in liquids, and slowest in gases due to particle density and compactness.
Types of waves include:
- Transverse waves: Oscillations perpendicular to the wave's direction.
- Longitudinal waves: Vibrations parallel to the wave's direction.
- Surface waves: Seismic waves trapped along Earth's interface.
Example: Transverse waves can be visualized as ripples, such as the vibrations of a guitar string.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user