Energy

• What is chemical energy?

  Potential energy stored in chemical bonds
• What happens to the chemical energy in fuels when burned?

  It is released as energy during combustion
• What is kinetic energy?

  Energy due to an object's motion
• What happens to kinetic energy as speed increases?


  Kinetic energy increases with faster speed
• What does the fact that the potential energy approaches zero at large distances signify?

  The gravitational influence of both Earth and Moon becomes negligible at large distances.
• What is the formula for gravitational potential energy?

  $GPE =$$mgh$
• In the formula $GPE =$$mgh$, what does 'g' represent?


  Gravitational field strength in N/kg
• What happens to a spring when it gains elastic potential energy?

  • The spring is either compressed or stretched
  • It stores energy
• What happens to particles when temperature increases?

  Particles move faster, increasing thermal energy
• How does thermal energy relate to kinetic energy?

  Thermal energy focuses on collective particle movement
• What happens to the elastic potential energy when a spring returns to its original length?


  It is released for use
• What is the relationship between Magnetic Energy and potential energy?


  Magnetic Energy is a form of potential energy
• What do parallel lines in an electric field represent?

  Uniform potential in a constant electric field
• What does the change in potential energy, ΔP.E., represent?

  The work done against gravity when moving the spacecraft between two locations.
• What visual representations are associated with electrostatic energy?

  Electric field lines and equipotential lines
• What concept does Figure 3 represent and what does it show?

  Figure 3 represents the potential energy well of a spacecraft influenced by the gravitational fields of both the Earth and the Moon. It shows how the potential energy changes as the spacecraft moves between the Earth and the Moon, demonstrating the transition from one gravitational influence to another.
• What is the formula for kinetic energy?

  KE = ½mv²
• How does gravitational potential energy vary on Earth and the Moon?

  • GPE increases with distance from the surface
  • Earth's GPE increases with distance (red line)
  • Moon's GPE follows a similar pattern (blue line)
• Why is a neutron used to initiate nuclear fission?

  Because they are neutral and can penetrate the nucleus easily
• If one neutron initiates a fission event that releases three neutrons, how many fission events will the initial neutron initiate in the next generation?

  Three
• How can Magnetic Energy be utilized in practical applications?

  By powering an electric motor
• How does nuclear energy demonstrate density compared to other energy forms?

  It is an incredibly dense form of stored energy
• What is one of the main energy stores discussed?

  Chemical energy
• In the formula $GPE =$$mgh$, what does 'm' represent?


  Mass in kilograms (kg)
• How does nuclear fission lead to a chain reaction?

  The released neutrons trigger more fission events
• How is elastic potential energy stored in an object?

  When its shape changes through deformation
• What can stored Magnetic Energy be used for?


  To do work, like moving objects
• What are the products of nuclear fission?

  • Fission products
  • More neutrons
• What are the components of the energy store table related to Magnetic Energy?

  • Energy Store: Magnetic
  • Description: In magnetic fields
  • Alignment: Magnetic dipoles
• What is elastic potential energy?

  Stored energy in a deformed object
• What are the products of nuclear fission?

  Smaller nuclei, more neutrons, and energy
• How does thermal energy relate to the movement of particles?

  It is the total kinetic energy of all particles
• How does thermal energy differ from chemical energy?

  Thermal energy is kinetic, not stored in bonds
• What pattern do electric dipoles create in electric fields?

  Elliptical patterns
• What is a key difference of nuclear energy from other potential energy stores?

  It is contained within the nucleus
• What do the three patterns of charge distribution indicate about electric fields?

  • Constant electric field: parallel lines indicate uniform potential
  • Point charges: create radial patterns
  • Electric dipoles: create elliptical patterns
• What is gravitational potential energy (GPE)?


  Energy stored due to an object's position
• What happens when chemical bonds break?

  They release energy that can do work
• How does eating food relate to chemical energy?

  Food provides our bodies with chemical energy
• How does gravitational potential energy change with height?


  It increases with increasing height