everything in one go

• What topics are covered in AQA GCSE Physics Paper 1?

  Energy, electricity, particles, atomic structure
• What is energy described as in physics?

  Energy is an idea that indicates interactions
• How is energy measured?

  In Joules
• What happens to total energy in any interaction?

  Total energy is always conserved
• What is a caveat regarding energy conservation?

  Energy can turn into matter
• What are the types of energy stores mentioned?

  Kinetic, gravitational potential, elastic potential
• How is kinetic energy calculated?

  $E =$$\frac{1}{2} mv^2$
• What does an increase in speed indicate about kinetic energy?

  Kinetic energy increases with speed
• How is gravitational potential energy calculated?

  $E =$$mgh$
• What does gravitational potential energy depend on?

  Mass, gravitational field strength, height
• What does the change in gravitational potential energy represent?

  Change in height of the object
• How is elastic potential energy calculated?

  $E =$$\frac{1}{2} k e^2$
• What does specific heat capacity measure?

  Energy needed to raise 1 kg by 1°C
• What is the equation for change in thermal energy?

  $E =$$mc\Delta T$
• What happens to particles when thermal energy increases?

  Particles move faster
• What is chemical potential energy?

  Energy stored in food or fuels
• What must happen for energy to be transferred in a system?

  Energy must move between objects or stores
• What is a closed system?

  No energy is lost or gained from surroundings
• How can we equate gravitational potential energy and kinetic energy?

  GPE lost equals KE gained
• What happens to energy in a non-closed system?

  Energy is lost to surroundings
• What is the equation for power?

  $P =$$\frac{E}{T}$
• What does power measure?

  Rate of energy transfer
• What is the unit for power?

  Watts (W)
• How do you calculate energy used in a minute?

  $E =$$P \cdot T$
• What is efficiency in energy systems?

  Useful energy output divided by total input
• How do you express efficiency as a percentage?

  Multiply the decimal by 100
• What happens to energy in poorly insulated buildings?

  Heat is lost through walls and windows
• What are finite energy sources?

  Fossil fuels and nuclear fuel
• What are renewable energy sources?

  Sources that can be replenished naturally
• What is the flow of charge called?

  Current
• What does potential difference (PD) indicate?

  Energy transferred per coulomb of charge
• How is potential difference calculated?

  <latex{V = \frac{E}{Q}}</latex>
• What is the unit for charge?

  Coulombs (C)
• How is current defined?

  Rate of flow of charge
• How is current calculated?

  <latex{I = \frac{Q}{T}}</latex>
• What is the unit for current?

  Amperes (A)
• What is resistance in a circuit?

  Opposition to the flow of charge
• What is the relationship between potential difference and current?

  They are directly proportional
• What does Ohm's law state?

  <latex{V = I \cdot R}</latex>
• How can resistance be calculated from an IV graph?

  Using <latex{R = \frac{V}{I}}</latex>