Energy resources power everything from your phone to entire cities,... Show more
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
Responding to change (a2 only)
Infection and response
Homeostasis and response
Energy transfers (a2 only)
Cell biology
Organisms respond to changes in their internal and external environments (a-level only)
Biological molecules
Organisation
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
Britain & the wider world: 1745 -1901
1l the quest for political stability: germany, 1871-1991
The cold war
Inter-war germany
Medieval period: 1066 -1509
2d religious conflict and the church in england, c1529-c1570
2o democracy and nazism: germany, 1918-1945
1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
2m wars and welfare: britain in transition, 1906-1957
World war two & the holocaust
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
245
•
5 Dec 2025
•
Reuben Cowell
@reubencowell
Energy resources power everything from your phone to entire cities,... Show more




Energy resources fall into two main categories that you'll need to know inside out. Renewable resources never run out because they naturally replenish themselves, whilst non-renewable resources have limited supplies that will eventually be exhausted.
Renewable sources like solar, wind, and water power are environmentally friendly champions, but they come with a catch. They're often unreliable (what happens when it's not sunny or windy?) and typically produce less energy than their non-renewable counterparts.
Solar energy is free once you've installed the panels, but only works well on sunny days. Wind turbines need lots of space and constant wind to be effective. Wave power and hydroelectricity harness water's movement, though hydro dams can seriously impact local ecosystems.
Quick Tip: Remember that renewable doesn't always mean perfect - even biofuels and geothermal energy have limitations like cost and location requirements.

Non-renewable energy sources are the reliable workhorses of our energy system, but they're also environmental troublemakers. Fossil fuels (coal, oil, and natural gas) plus nuclear fuel make up this category.
These energy sources are brilliant at meeting demand quickly and consistently. When you flick a light switch, there's a good chance non-renewable energy is powering that bulb because these sources can ramp up production instantly.
However, the environmental cost is steep. Burning fossil fuels pumps carbon dioxide into the atmosphere, contributing to climate change. Some also release sulfur dioxide, which causes acid rain that damages buildings and ecosystems.
Nuclear power presents its own challenges - whilst it doesn't produce greenhouse gases during operation, the radioactive waste lasts for thousands of years and there's always the risk of catastrophic accidents.
Remember: Non-renewables are like eating junk food - they give you quick energy but cause long-term problems!

Energy resources aren't just theoretical concepts - they power the transport and heating systems you use daily. Understanding these applications helps you see why energy choices matter.
Transport relies heavily on non-renewable fuels. Most cars run on petrol or diesel, whilst older trains might use coal. However, electric cars are becoming more popular, especially when charged using renewable electricity sources like solar or wind power.
Heating your home typically involves natural gas in the UK, which is a fossil fuel. Coal fireplaces and electric heaters powered by non-renewable sources are also common options.
The renewable alternatives are growing more practical. Ground source heat pumps use geothermal energy to heat homes efficiently, whilst solar water heaters can provide hot water year-round. Some people use renewable electricity or biofuels to power their heating systems.
Think About It: Every time you turn up the heating or get in a car, you're making an energy choice that affects the environment.
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.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
This is the aqa exam board for triple highwe
App Store
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
Reuben Cowell
@reubencowell
Energy resources power everything from your phone to entire cities, but not all energy sources are created equal. Understanding the difference between renewable and non-renewable resources is crucial for making sense of today's environmental debates and energy policies.

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Energy resources fall into two main categories that you'll need to know inside out. Renewable resources never run out because they naturally replenish themselves, whilst non-renewable resources have limited supplies that will eventually be exhausted.
Renewable sources like solar, wind, and water power are environmentally friendly champions, but they come with a catch. They're often unreliable (what happens when it's not sunny or windy?) and typically produce less energy than their non-renewable counterparts.
Solar energy is free once you've installed the panels, but only works well on sunny days. Wind turbines need lots of space and constant wind to be effective. Wave power and hydroelectricity harness water's movement, though hydro dams can seriously impact local ecosystems.
Quick Tip: Remember that renewable doesn't always mean perfect - even biofuels and geothermal energy have limitations like cost and location requirements.

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Non-renewable energy sources are the reliable workhorses of our energy system, but they're also environmental troublemakers. Fossil fuels (coal, oil, and natural gas) plus nuclear fuel make up this category.
These energy sources are brilliant at meeting demand quickly and consistently. When you flick a light switch, there's a good chance non-renewable energy is powering that bulb because these sources can ramp up production instantly.
However, the environmental cost is steep. Burning fossil fuels pumps carbon dioxide into the atmosphere, contributing to climate change. Some also release sulfur dioxide, which causes acid rain that damages buildings and ecosystems.
Nuclear power presents its own challenges - whilst it doesn't produce greenhouse gases during operation, the radioactive waste lasts for thousands of years and there's always the risk of catastrophic accidents.
Remember: Non-renewables are like eating junk food - they give you quick energy but cause long-term problems!

Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Energy resources aren't just theoretical concepts - they power the transport and heating systems you use daily. Understanding these applications helps you see why energy choices matter.
Transport relies heavily on non-renewable fuels. Most cars run on petrol or diesel, whilst older trains might use coal. However, electric cars are becoming more popular, especially when charged using renewable electricity sources like solar or wind power.
Heating your home typically involves natural gas in the UK, which is a fossil fuel. Coal fireplaces and electric heaters powered by non-renewable sources are also common options.
The renewable alternatives are growing more practical. Ground source heat pumps use geothermal energy to heat homes efficiently, whilst solar water heaters can provide hot water year-round. Some people use renewable electricity or biofuels to power their heating systems.
Think About It: Every time you turn up the heating or get in a car, you're making an energy choice that affects the environment.
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.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
10
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Explore key concepts in physics related to energy, power, and electricity. This resource covers topics such as energy transfer, Ohm's Law, radioactivity, and thermal energy, providing a comprehensive overview for GCSE Triple Science revision. Ideal for students preparing for exams, this summary includes essential equations and principles to enhance understanding.
Zoology Notes
Explore the key concepts of energy conservation and dissipation, including power, efficiency, and the relationship between force and extension in elastic materials. This summary covers essential terms and principles relevant to energy transfers in electrical appliances and the limitations of proportionality in force-extension graphs.
Explore the fundamental mechanisms of heat transfer: conduction, convection, and radiation. This summary covers how energy is transferred through different mediums, the role of particle movement, and the properties of thermal conductors. Ideal for students studying physics concepts related to thermal energy.
Explore the principles of electricity, including potential difference, resistance, and current flow in series and parallel circuits. This summary covers key concepts such as Ohm's law, the behavior of filament lamps, and the role of various circuit components. Ideal for students preparing for assessments in physics.
momentum, impulse, conservation of momentum
This is the aqa exam board for triple highwe
App Store
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