Open the App

Subjects

PhysicsPhysics272 views·Updated 23 Jun 2026·4 pages

Energy Resources Study Notes - Physics Y9

I
isaac@isaac_pcpe

Understanding energy resources is crucial for tackling climate change and...

1
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Energy Resources and Fossil Fuels

Fossil fuels are the energy sources that power most of our world today, but they come with serious problems. These non-renewable resources like coal, oil, and natural gas can only be used once before they're gone forever. Once you burn coal for electricity, that coal is finished - there's no getting it back.

The environmental impact of fossil fuels makes them particularly concerning. When we burn these fuels, they release harmful gases that contribute to climate change and air pollution.

Understanding which energy sources are renewable versus non-renewable helps you grasp why scientists are pushing for change. Renewable sources like wind, solar, hydroelectricity, and wave energy can be used repeatedly, whilst non-renewable ones like oil, coal, natural gas, and nuclear fuel have limited supplies.

Quick Check: Remember that biofuels, despite being made from plants, are actually renewable because we can always grow more crops to make them!

2
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Why Fossil Fuels Still Dominate

Renewable energy sources can theoretically be used infinitely - wind will always blow, waves will always move, and the sun will always shine. They're much better for the environment than fossil fuels, though they often cost more to set up initially.

So why haven't we switched completely to renewables yet? Fossil fuels are considered more reliable because we've been using them for decades and know exactly how to extract energy from them efficiently. They're easily available and provide consistent power regardless of weather conditions.

The economics make change difficult too. Despite massive UK government investment in wind power, fossil fuel use hasn't declined significantly. This happens because fossil fuel companies make enormous profits and resist change, whilst our energy infrastructure isn't ready to rely completely on renewables yet.

Having a "blend" of energy sources rather than depending solely on coal gives us flexibility and helps different sectors see which alternatives might be profitable. This approach allows for gradual transition rather than sudden, disruptive change.

Think About It: Even with 60 years of renewable energy development, we're still working on making the transition from fossil fuels - change takes time!

3
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Renewable Energy Challenges and Growth

Looking at renewable energy consumption over 60 years reveals interesting patterns. Wood energy hasn't increased much because burning wood still involves deforestation and emissions - other renewable sources are simply more environmentally friendly.

Wind turbines represent a classic renewable energy challenge. Despite huge investments, wind power doesn't produce as much energy as other renewable sources. This happens because many people consider turbines an eyesore and don't want them nearby, plus they're expensive to install compared to alternatives.

The key is matching the right energy source to each situation. Cars can run on biofuels or gas, whilst electricity production works well with wind or solar power. Home heating might use coal or geothermal energy, and trains can be powered by coal or solar.

Understanding these practical applications helps you see why we need multiple energy sources rather than relying on just one type.

Real World: The "not in my backyard" attitude towards wind turbines shows how social acceptance affects renewable energy adoption, not just technology!

4
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

The Greenhouse Effect Connection

Human activities have significantly worsened the greenhouse effect, primarily through burning fossil fuels. When we burn coal, oil, and natural gas for electricity, heating, and transport, we release greenhouse gases that trap heat in Earth's atmosphere.

This connection between energy choices and climate change explains why switching to renewable sources matters so much. Every fossil fuel we burn adds to the problem, whilst renewable energy sources produce little to no greenhouse gas emissions.

The challenge lies in balancing our immediate energy needs with long-term environmental protection. We need reliable energy for modern life, but we also need to reduce our impact on the planet's climate systems.

Key Takeaway: Your energy choices today - from how your home is heated to supporting renewable energy policies - directly impact the greenhouse effect and climate change!

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.

Most popular content: Energy

2

Most popular content in Physics

9
PhysicsPhysics

Forces and Motion Overview

Explore key concepts in Forces and Motion, including Hooke's Law, velocity, acceleration, and the principles of moments. This summary covers essential topics such as the relationship between force and extension, terminal velocity, and the impact of safety devices in physics. Ideal for AQA Physics Unit 5 revision.

109,190872
G
PhysicsPhysics

GCSE Physics - Energy stores and Systems

Pl-Energy topic to revise for GCSE

101,3742
C
PhysicsPhysics

Conservation of energy- energy types and stores

Build a strong foundation in physics with these easy flashcards covering key concepts and principles.

96391
PhysicsPhysics

Physics Paper 2 Essentials

Master key concepts for AQA Combined Physics Paper 2, including electromagnetic waves, mechanics, forces, and motion. This comprehensive summary covers essential topics like wave properties, Newton's laws, and the motor effect, ensuring you're well-prepared for your exam.

1116,072940
PhysicsPhysics

GCSE Physics Practical Experiments

Explore essential GCSE Physics practicals for AQA, covering key concepts such as Hooke's Law, wave properties, thermal insulation, and electrical circuits. This comprehensive guide includes step-by-step procedures, variables, and safety considerations for each experiment, ensuring a thorough understanding of practical applications in physics.

1011,409477
P
PhysicsPhysics

Physics Made Easy: Essential Concepts for Grade 10 Students

Master the fundamentals of physics with this comprehensive flashcard set designed specifically for grade 10 students. Learn key concepts and principles in an easy and engaging way!

104531
PhysicsPhysics

physics paper 2 foundation notes

aqa combined science physics paper 2 foundation notes

101,32938
PhysicsPhysics

Physics paper 2 notes

physics aqa gcse paper 2 combined higher notes

101,23911
P
PhysicsPhysics

Physics Quiz - Current, Charge and Power

AQA physics quiz.

111,0262

Most popular content

9
SociologySociology

Sociology of Education Overview

Explore comprehensive A-Level Sociology notes on the education system, covering key theories, policies, and sociological perspectives. This resource includes insights on marketisation, gender roles, cultural deprivation, and educational inequalities, providing a thorough understanding of how education shapes social stratification and individual achievement. Ideal for exam preparation and in-depth study.

12102,8703,040
SociologySociology

Sociology of Families: Comprehensive Revision

Dive into an extensive overview of family dynamics, perspectives, and patterns in sociology. This resource covers key concepts such as family diversity, gender roles, marriage, and the impact of social policies on family structures. Perfect for A-Level Sociology students preparing for Paper 2.

1273,6662,307
CriminologyCriminology

Criminology: Crime & Punishment Overview

Comprehensive mindmaps covering key concepts in the Crime and Punishment topic for WJEC Criminology Unit 4. This resource includes detailed insights into the Criminal Justice System, crime prevention strategies, sentencing models, and the roles of various agencies. Ideal for A-Level revision, ensuring you grasp essential theories and legislative processes to excel in your exams.

1254,8721,059
SociologySociology

Comprehensive Crime & Deviance Overview

Explore an extensive revision of crime and deviance topics, including theories, types of crime, and the impact of media. This resource covers key concepts such as Marxism, functionalism, gender and crime, and the influence of globalization on criminal behavior. Ideal for students seeking a thorough understanding of criminology and its various theories. Type: Full Topic Revision.

1251,6541,399
C
BiologyBiology

Cell Biology and Cell structure

cell structures

93,2490
English LiteratureEnglish Literature

An Inspector Calls: Character Insights

Explore in-depth analysis and key quotes for characters in J.B. Priestley's 'An Inspector Calls'. This resource covers Gerald Croft, Inspector Goole, Sheila Birling, Mrs. Birling, Eric Birling, and Eva Smith, focusing on themes of class, gender roles, and social responsibility. Ideal for students aiming for Grade 8 and above.

1025,431907
CriminologyCriminology

WJEC Unit 4 Criminology

Criminology unit 4 detailed revision note

127,154125
CriminologyCriminology

Criminology Theories Overview

Explore key criminology theories and their implications on crime and deviance. This comprehensive summary covers biological, psychological, and sociological perspectives, including labelling theory, right realism, and the impact of social campaigns on policy development. Ideal for A-Level criminology students seeking to understand the complexities of criminal behaviour and the factors influencing crime prevention strategies.

129,761210
English LiteratureEnglish Literature

Romeo and Juliet: Key themes

Key Romeo and Juliet themes and analysed quotes

106,708198

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5App Store
4.7/5Google 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 SiOS 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 KlichAndroid 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.

AnnaiOS user

PhysicsPhysics272 views·Updated 23 Jun 2026·4 pages

Energy Resources Study Notes - Physics Y9

I
isaac@isaac_pcpe

Understanding energy resources is crucial for tackling climate change and building a sustainable future. This topic covers the differences between renewable and non-renewable energy sources, examining why we're still heavily dependent on fossil fuels despite growing investment in cleaner alternatives.

1
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Energy Resources and Fossil Fuels

Fossil fuels are the energy sources that power most of our world today, but they come with serious problems. These non-renewable resources like coal, oil, and natural gas can only be used once before they're gone forever. Once you burn coal for electricity, that coal is finished - there's no getting it back.

The environmental impact of fossil fuels makes them particularly concerning. When we burn these fuels, they release harmful gases that contribute to climate change and air pollution.

Understanding which energy sources are renewable versus non-renewable helps you grasp why scientists are pushing for change. Renewable sources like wind, solar, hydroelectricity, and wave energy can be used repeatedly, whilst non-renewable ones like oil, coal, natural gas, and nuclear fuel have limited supplies.

Quick Check: Remember that biofuels, despite being made from plants, are actually renewable because we can always grow more crops to make them!

2
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Why Fossil Fuels Still Dominate

Renewable energy sources can theoretically be used infinitely - wind will always blow, waves will always move, and the sun will always shine. They're much better for the environment than fossil fuels, though they often cost more to set up initially.

So why haven't we switched completely to renewables yet? Fossil fuels are considered more reliable because we've been using them for decades and know exactly how to extract energy from them efficiently. They're easily available and provide consistent power regardless of weather conditions.

The economics make change difficult too. Despite massive UK government investment in wind power, fossil fuel use hasn't declined significantly. This happens because fossil fuel companies make enormous profits and resist change, whilst our energy infrastructure isn't ready to rely completely on renewables yet.

Having a "blend" of energy sources rather than depending solely on coal gives us flexibility and helps different sectors see which alternatives might be profitable. This approach allows for gradual transition rather than sudden, disruptive change.

Think About It: Even with 60 years of renewable energy development, we're still working on making the transition from fossil fuels - change takes time!

3
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Renewable Energy Challenges and Growth

Looking at renewable energy consumption over 60 years reveals interesting patterns. Wood energy hasn't increased much because burning wood still involves deforestation and emissions - other renewable sources are simply more environmentally friendly.

Wind turbines represent a classic renewable energy challenge. Despite huge investments, wind power doesn't produce as much energy as other renewable sources. This happens because many people consider turbines an eyesore and don't want them nearby, plus they're expensive to install compared to alternatives.

The key is matching the right energy source to each situation. Cars can run on biofuels or gas, whilst electricity production works well with wind or solar power. Home heating might use coal or geothermal energy, and trains can be powered by coal or solar.

Understanding these practical applications helps you see why we need multiple energy sources rather than relying on just one type.

Real World: The "not in my backyard" attitude towards wind turbines shows how social acceptance affects renewable energy adoption, not just technology!

4
of 4
Energy Resources

1) What is a fossil fuel?

Fossil fuels are non-renewable energy sources meaning they can only be used
once then they're g

Sign up to see the content. It's free!

  • Access to all documents
  • Improve your grades
  • Join milions of students

By signing up you accept Terms of Service and Privacy Policy

The Greenhouse Effect Connection

Human activities have significantly worsened the greenhouse effect, primarily through burning fossil fuels. When we burn coal, oil, and natural gas for electricity, heating, and transport, we release greenhouse gases that trap heat in Earth's atmosphere.

This connection between energy choices and climate change explains why switching to renewable sources matters so much. Every fossil fuel we burn adds to the problem, whilst renewable energy sources produce little to no greenhouse gas emissions.

The challenge lies in balancing our immediate energy needs with long-term environmental protection. We need reliable energy for modern life, but we also need to reduce our impact on the planet's climate systems.

Key Takeaway: Your energy choices today - from how your home is heated to supporting renewable energy policies - directly impact the greenhouse effect and climate change!

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.

Most popular content: Energy

2

Most popular content in Physics

9
PhysicsPhysics

Forces and Motion Overview

Explore key concepts in Forces and Motion, including Hooke's Law, velocity, acceleration, and the principles of moments. This summary covers essential topics such as the relationship between force and extension, terminal velocity, and the impact of safety devices in physics. Ideal for AQA Physics Unit 5 revision.

109,190872
G
PhysicsPhysics

GCSE Physics - Energy stores and Systems

Pl-Energy topic to revise for GCSE

101,3742
C
PhysicsPhysics

Conservation of energy- energy types and stores

Build a strong foundation in physics with these easy flashcards covering key concepts and principles.

96391
PhysicsPhysics

Physics Paper 2 Essentials

Master key concepts for AQA Combined Physics Paper 2, including electromagnetic waves, mechanics, forces, and motion. This comprehensive summary covers essential topics like wave properties, Newton's laws, and the motor effect, ensuring you're well-prepared for your exam.

1116,072940
PhysicsPhysics

GCSE Physics Practical Experiments

Explore essential GCSE Physics practicals for AQA, covering key concepts such as Hooke's Law, wave properties, thermal insulation, and electrical circuits. This comprehensive guide includes step-by-step procedures, variables, and safety considerations for each experiment, ensuring a thorough understanding of practical applications in physics.

1011,409477
P
PhysicsPhysics

Physics Made Easy: Essential Concepts for Grade 10 Students

Master the fundamentals of physics with this comprehensive flashcard set designed specifically for grade 10 students. Learn key concepts and principles in an easy and engaging way!

104531
PhysicsPhysics

physics paper 2 foundation notes

aqa combined science physics paper 2 foundation notes

101,32938
PhysicsPhysics

Physics paper 2 notes

physics aqa gcse paper 2 combined higher notes

101,23911
P
PhysicsPhysics

Physics Quiz - Current, Charge and Power

AQA physics quiz.

111,0262

Most popular content

9
SociologySociology

Sociology of Education Overview

Explore comprehensive A-Level Sociology notes on the education system, covering key theories, policies, and sociological perspectives. This resource includes insights on marketisation, gender roles, cultural deprivation, and educational inequalities, providing a thorough understanding of how education shapes social stratification and individual achievement. Ideal for exam preparation and in-depth study.

12102,8703,040
SociologySociology

Sociology of Families: Comprehensive Revision

Dive into an extensive overview of family dynamics, perspectives, and patterns in sociology. This resource covers key concepts such as family diversity, gender roles, marriage, and the impact of social policies on family structures. Perfect for A-Level Sociology students preparing for Paper 2.

1273,6662,307
CriminologyCriminology

Criminology: Crime & Punishment Overview

Comprehensive mindmaps covering key concepts in the Crime and Punishment topic for WJEC Criminology Unit 4. This resource includes detailed insights into the Criminal Justice System, crime prevention strategies, sentencing models, and the roles of various agencies. Ideal for A-Level revision, ensuring you grasp essential theories and legislative processes to excel in your exams.

1254,8721,059
SociologySociology

Comprehensive Crime & Deviance Overview

Explore an extensive revision of crime and deviance topics, including theories, types of crime, and the impact of media. This resource covers key concepts such as Marxism, functionalism, gender and crime, and the influence of globalization on criminal behavior. Ideal for students seeking a thorough understanding of criminology and its various theories. Type: Full Topic Revision.

1251,6541,399
C
BiologyBiology

Cell Biology and Cell structure

cell structures

93,2490
English LiteratureEnglish Literature

An Inspector Calls: Character Insights

Explore in-depth analysis and key quotes for characters in J.B. Priestley's 'An Inspector Calls'. This resource covers Gerald Croft, Inspector Goole, Sheila Birling, Mrs. Birling, Eric Birling, and Eva Smith, focusing on themes of class, gender roles, and social responsibility. Ideal for students aiming for Grade 8 and above.

1025,431907
CriminologyCriminology

WJEC Unit 4 Criminology

Criminology unit 4 detailed revision note

127,154125
CriminologyCriminology

Criminology Theories Overview

Explore key criminology theories and their implications on crime and deviance. This comprehensive summary covers biological, psychological, and sociological perspectives, including labelling theory, right realism, and the impact of social campaigns on policy development. Ideal for A-Level criminology students seeking to understand the complexities of criminal behaviour and the factors influencing crime prevention strategies.

129,761210
English LiteratureEnglish Literature

Romeo and Juliet: Key themes

Key Romeo and Juliet themes and analysed quotes

106,708198

Can't find what you're looking for? Explore other subjects.

Students love us — and so will you.

4.6/5App Store
4.7/5Google 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 SiOS 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 KlichAndroid 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.

AnnaiOS user