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Updated Mar 17, 2026
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Aqa Physics Paper 1 Notes - PDF Summary with Topics and Gravitational Energy Examples
A
Antonia Akoni
@antoniaakoni_khtn
1 / 8
Circuit Symbols and Electrical Components
This comprehensive section details essential electrical circuit symbols and their functions in electrical systems.
Definition: Circuit symbols are standardized representations of electrical components used in circuit diagrams.
The section includes detailed explanations of basic circuit components:
- Cells and batteries
- Lamps and LEDs
- Variable resistors
- Switches (open and closed)
- Diodes
- Thermistors
Vocabulary: Current is defined as the flow of electrons through a circuit, measured in amperes (A).
Example: An ammeter measures current while a voltmeter measures potential difference in circuits.
Thermistors and Circuit Configurations
This section explores temperature-sensitive components and different circuit arrangements.
Definition: A thermistor is a temperature-dependent resistor used in various applications including central heating and street lights.
Highlight: Light Dependent Resistors (LDRs) change their resistance based on the amount of light they receive.
The section explains two main circuit configurations:
- Series circuits: Where current remains constant throughout
- Parallel circuits: Where current splits across different branches
Example: In series circuits, the total resistance is calculated by adding individual resistances , while in parallel circuits, it follows the formula 1/R₁ + 1/R₂.
[Continued in next sections...]
Page 3: Thermistors and Circuit Configurations This section covers temperature-sensitive components and circuit arrangements, particularly focusing on series and parallel circuits.
Highlight: Thermistors are temperature-sensitive components used in applications like central heating and street lights Definition: Series circuits maintain the same current throughout, while parallel circuits split current across branches Example: Light Dependent Resistors (LDR) change resistance based on light intensity
Page 4: Mains Electricity and National Grid An examination of domestic electricity supply and the national grid system, including voltage levels and safety features.
Vocabulary: Step-up transformer - device that increases voltage for efficient power transmission Highlight: Mains electricity operates at 230V and 50Hz in the UK Example: Plug components include live (red), neutral (blue), and earth (green & yellow) wires
Page 5: Density and Atomic Structure Covers fundamental concepts of density, specific heat capacity, and atomic structure.
Definition: Density is the amount of mass in a set volume Vocabulary: Specific heat capacity - energy needed to raise 1kg of substance by 1 degree Example: Atoms consist of protons, neutrons, and electrons with specific charges and locations
Page 6: Radiation and Atomic History Details the development of atomic theory and different types of radiation.
Highlight: Three main types of radiation: alpha, beta, and gamma Example: Alpha radiation stopped by paper, beta by foil, gamma requires lead shielding Definition: Isotopes are atoms with different numbers of neutrons
Page 7: Static Electricity and Background Radiation Explores static electricity phenomena and sources of background radiation.
Definition: Half-life is the time taken for half of radioactive atoms to decay Example: Background radiation sources include radon (50%), medical sources (14%), and ground radiation (14%) Highlight: Radioactivity has various practical applications including cancer treatment and smoke alarms
Energy Types and Conservation
This section provides a comprehensive overview of energy types and the fundamental principle of energy conservation. The content explores various forms of energy and their practical applications in everyday scenarios.
Definition: The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.
Vocabulary: Gravitational potential energy is the energy possessed by an object due to its position in a gravitational field.
The section covers multiple energy forms including:
- Kinetic energy
- Sound energy
- Light energy
- Nuclear energy
- Chemical energy
- Thermal energy
Highlight: Energy efficiency in homes is achieved through various insulation methods including cavity insulation, double glazing, loft insulation, carpets, and curtains.
Example: Renewable energy sources include solar, wind, water (hydroelectric), geothermal, tidal, and wave power, while finite sources include fossil fuels and nuclear energy.
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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 Knowunity AI. 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 Knowunity AI. 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
Aqa Physics Paper 1 Notes - PDF Summary with Topics and Gravitational Energy Examples
A
Antonia Akoni
@antoniaakoni_khtn
Overall Summary
A comprehensive guide covering key physics topics including energy types, electrical circuits, radiation, and nuclear processes. This aqa physics paper 1 notes pdf covers essential concepts for GCSE physics, focusing on both theoretical understanding and practical applications.
•... Show more
Circuit Symbols and Electrical Components
This comprehensive section details essential electrical circuit symbols and their functions in electrical systems.
Definition: Circuit symbols are standardized representations of electrical components used in circuit diagrams.
The section includes detailed explanations of basic circuit components:
- Cells and batteries
- Lamps and LEDs
- Variable resistors
- Switches (open and closed)
- Diodes
- Thermistors
Vocabulary: Current is defined as the flow of electrons through a circuit, measured in amperes (A).
Example: An ammeter measures current while a voltmeter measures potential difference in circuits.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Thermistors and Circuit Configurations
This section explores temperature-sensitive components and different circuit arrangements.
Definition: A thermistor is a temperature-dependent resistor used in various applications including central heating and street lights.
Highlight: Light Dependent Resistors (LDRs) change their resistance based on the amount of light they receive.
The section explains two main circuit configurations:
- Series circuits: Where current remains constant throughout
- Parallel circuits: Where current splits across different branches
Example: In series circuits, the total resistance is calculated by adding individual resistances , while in parallel circuits, it follows the formula 1/R₁ + 1/R₂.
[Continued in next sections...]
Sign up to see the contentIt's free!
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Page 3: Thermistors and Circuit Configurations This section covers temperature-sensitive components and circuit arrangements, particularly focusing on series and parallel circuits.
Highlight: Thermistors are temperature-sensitive components used in applications like central heating and street lights Definition: Series circuits maintain the same current throughout, while parallel circuits split current across branches Example: Light Dependent Resistors (LDR) change resistance based on light intensity
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Page 4: Mains Electricity and National Grid An examination of domestic electricity supply and the national grid system, including voltage levels and safety features.
Vocabulary: Step-up transformer - device that increases voltage for efficient power transmission Highlight: Mains electricity operates at 230V and 50Hz in the UK Example: Plug components include live (red), neutral (blue), and earth (green & yellow) wires
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
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Page 5: Density and Atomic Structure Covers fundamental concepts of density, specific heat capacity, and atomic structure.
Definition: Density is the amount of mass in a set volume Vocabulary: Specific heat capacity - energy needed to raise 1kg of substance by 1 degree Example: Atoms consist of protons, neutrons, and electrons with specific charges and locations
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Page 6: Radiation and Atomic History Details the development of atomic theory and different types of radiation.
Highlight: Three main types of radiation: alpha, beta, and gamma Example: Alpha radiation stopped by paper, beta by foil, gamma requires lead shielding Definition: Isotopes are atoms with different numbers of neutrons
Sign up to see the contentIt's free!
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Improve your grades
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Page 7: Static Electricity and Background Radiation Explores static electricity phenomena and sources of background radiation.
Definition: Half-life is the time taken for half of radioactive atoms to decay Example: Background radiation sources include radon (50%), medical sources (14%), and ground radiation (14%) Highlight: Radioactivity has various practical applications including cancer treatment and smoke alarms
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
Energy Types and Conservation
This section provides a comprehensive overview of energy types and the fundamental principle of energy conservation. The content explores various forms of energy and their practical applications in everyday scenarios.
Definition: The law of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.
Vocabulary: Gravitational potential energy is the energy possessed by an object due to its position in a gravitational field.
The section covers multiple energy forms including:
- Kinetic energy
- Sound energy
- Light energy
- Nuclear energy
- Chemical energy
- Thermal energy
Highlight: Energy efficiency in homes is achieved through various insulation methods including cavity insulation, double glazing, loft insulation, carpets, and curtains.
Example: Renewable energy sources include solar, wind, water (hydroelectric), geothermal, tidal, and wave power, while finite sources include fossil fuels and nuclear energy.
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.
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Most popular content: Voltage
Most popular content in Physics
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Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.6/5
App Store
4.7/5
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 Knowunity AI. 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 Knowunity AI. 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