Energies☀️

• The sun produces energy through nuclear fusion reactions
• What is the definition of work in physics?

  Transfer of energy that occurs when a force is applied to an object over a distance. Object moves in the direction if that applied force
• Work is measured in joules
• What are the different energy types?

  Radiant-thermal-kinetic-sound-nuclear-electrical-chemical pot.-elastic pot.-gravitational pot.
• What is thermal energy?

  The total amount of temperature and volume of the atoms/molecules of a substance
• Temperature is the kinetic energy of the atoms or molecules of a substance (Frequent movement and collisions)
• Heat travels from hotter areas to cooler areas
• What are the three types of heat transfer?

  Radiation, conduction, convection
• Radiation heat transfer occurs by the means of electromagnetic waves

  • Such as light, microwaves, and infrared.
• Conduction heat transfer occurs through the colliding of atoms in a solid or liquid
• Convection heat transfer occurs by the circulation path of fluid particles. Hotter particles rise and cooler particles fall.

  • LAVA LAMP
  • Sea breeze
  • Fireplace heating
• Specific heat capacity is the amount of heat energy/work required to raise the temperature of 1.0kg of a substance by 1 degree
• • When matter changes states, temperature can change when one state is present. (Warming up ice)
  • However, temperature stays constant when the state change occurs.(Ice to water)
• Latent heat is the amount of thermal energy absorbed or released during a change of state
• Conservation of energy: Energy can be transferred or transformed however the AMOUNT of energy remains constant!
• Total mechanical energy = kinetic energy + potential energy