Energy stores

• What is an energy store?

  A place where energy is kept
• How is thermal energy related to temperature?

  It is related to the temperature of a substance
• How do the eight energy stores differ from each other?

  • Chemical: Bonds between atoms
  • Kinetic: Movement of objects
  • Gravitational: Height above ground
  • Elastic: Deformation of materials
  • Thermal: Heat energy
  • Magnetic: Magnetic fields
  • Electrostatic: Electrical charges
  • Nuclear: Atomic nuclei
• If you wanted to observe the detailed surface structure of a material, which type of microscope would you use?

  Scanning electron microscope
• When is elastic potential energy released?

  When it returns to its shape
• What type of energy is stored when something is stretched or compressed?

  Elastic potential energy
• What is kinetic energy associated with?

  Energy of motion
• What is the formula to calculate the kinetic energy of an object?

  $KE =$$\frac{1}{2}mv^2$
• When is electrostatic energy released?

  When charges move
• What type of energy exists between charges?

  Electrostatic energy
• What type of energy is stored in a stretched rubber band?

  Elastic potential energy
• What type of energy is thermal energy?

  Heat energy
• What factors increase kinetic energy?

  Speed and mass
• Where is magnetic energy stored?

  In magnetic fields
• Why does a ball held high on a tower have energy?

  It has gravitational potential energy ready to be released
• What is thermal energy derived from?

  Movement of particles
• In what way can the energy stored in a battery be utilized?

  It can be released as electrical energy
• How does gravitational potential energy change?

  It increases with altitude
• What are the different types of energy stores shown in the image?

  • Elastic potential
  • Magnetic
  • Electrostatic
  • Thermal
  • Gravitational potential
  • Chemical
  • Kinetic
• How is magnetic energy stored in a magnet?

  In its magnetic field
• How does a rocket gain altitude?

  It converts chemical energy to kinetic energy.
• What are the characteristics of different energy stores?

  • Chemical: Stored in bonds, released when broken
  • Kinetic: Energy of motion, increases with speed and mass
  • Gravitational potential: Related to height, increases with altitude
  • Elastic potential: Stored when stretched/compressed, released when returning to shape
  • Thermal: Heat energy from particle movement, related to temperature
  • Magnetic: Stored in magnetic fields, present in magnets/electrical currents
  • Electrostatic: Between charges, released when charges move
  • Nuclear: Stored in atomic nucleus, released through fission or fusion
• What causes thermal energy in hot water?

  Particle movement generates thermal energy
• How does the electrostatic energy store work?

  • Storing energy in the electric fields around charged objects
  • The energy is released when the charged objects interact
• What are the eight main energy stores?

  Chemical, Kinetic, Gravitational potential, Elastic potential, Thermal, Magnetic, Electrostatic, Nuclear
• What is the formula to calculate the area of a circle?

  $A =$$\pi r^2$
• How does the elastic potential energy store work?

  • Storing energy by stretching or compressing an object
  • The energy is released when the object returns to its original shape
• What is kinetic energy?

  Energy of moving objects
• What type of energy is stored in uranium in a nuclear reactor?

  Nuclear energy
• What is the result of nuclear fission in a reactor?

  Nuclear energy transforms into thermal energy.
• Why is gravitational potential energy stored in an object raised above the ground?

  Because the object has the potential to do work by falling due to gravity
• What occurs when a compressed spring is released?

  Elastic potential transforms into kinetic energy.
• What are the different energy transfers mentioned?

  1. Chemical → Kinetic
  2. Kinetic → Gravitational potential
  3. Gravitational potential → Kinetic
  4. Elastic potential → Kinetic
  5. Thermal → Kinetic
  6. Magnetic → Electrical
  7. Nuclear → Thermal
  8. Electrostatic → Kinetic
• How do the energy stores in the image differ in terms of the type of energy they store?

  The energy stores represent different forms of potential and kinetic energy
• What does gravitational potential energy depend on?

  Height-related energy
• What happens when a capacitor discharges?

  Electrostatic energy generates kinetic energy.
• How is nuclear energy released in a reactor?

  Through fission of uranium
• What happens to a ball when it is dropped?

  Gravitational potential converts to kinetic energy.
• How does a battery convert its stored energy?

  It converts chemical energy to electrical energy
• What are the characteristics of the eight main energy stores?

  1. Chemical: Stored in bonds between atoms
  2. Kinetic: Energy of moving objects
  3. Gravitational: Energy related to height
  4. Elastic: Energy stored when stretched
  5. Thermal: Heat energy
  6. Magnetic: Energy in magnetic fields
  7. Electrostatic: Energy in electrical charges
  8. Nuclear: Energy in atomic nuclei