Energy Concepts in AQA Physics

The video tutorial covers the types of energy using the mnemonic 'Geek's Lunch', explaining each type with examples. It discusses the Law of Conservation of Energy, emphasizing that energy is transformed, not created or destroyed. The video provides formulas for calculating kinetic, elastic potential, and gravitational potential energy. It also explains thermal energy change and power calculations. The concept of energy efficiency and wasted energy is explored, with examples of insulation. Finally, it compares renewable and finite energy resources, highlighting their advantages and disadvantages.

Which type of energy is stored in a battery?

• Kinetic Energy

• Gravitational Potential Energy

• Chemical Energy

• Nuclear Energy

What does the Law of Conservation of Energy state?

• Energy is always gained

• Energy can only be transformed

• Energy can be created and destroyed

• Energy is always lost

How is kinetic energy calculated?

• Half times spring constant times extension squared

• Mass times velocity

• Half times mass times velocity squared

• Mass times gravity times height

What is the unit of power?

• Newtons

• Watts

• Meters per second

• Joules

What is an example of wasted energy in a light bulb?

• Light

• Chemical

• Heat

• Electricity

Which of the following is a method to improve energy efficiency in homes?

• Single glazing

• Cavity wall insulation

• Removing carpets

• Leaving windows open

What is the formula for efficiency?

• Total power in over useful power out

• Useful power out over total power in

• Useful energy out over total energy in

• Total energy in over useful energy out

Which of the following is a renewable energy source?

• Coal

• Nuclear

• Oil

• Wind

What is a disadvantage of solar power?

• It works at night

• It is expensive to install

• It releases carbon dioxide

• It is non-polluting

Why are fossil fuels considered finite resources?

• They are renewable

• They are abundant

• They are non-polluting

• They take millions of years to form