Energy Transformations Ch 5.3 Physical Science Mrs. Neistadt
Objectives:• Be able to identify the six types of energy• Be able to use the Law of Conservation of Energy to show how energy transforms as it is used, demonstrated with a flow chart.
What is energy?• *Energy is the ability to do work – Examples: moving ball, moving wind, gasoline, electricity… – Any object that has energy has the ability to create a force Examples: a moving ball, electricity, gasoline…
*Different Types of Energy:1. Kinetic energy2. Potential energy3. Mechanical energy4. Radiant energy5. Electrical energy6. Chemical energy7. Nuclear energy8. Thermal energy
Potential Energy• *Potential Energy- Energy that is stored and waiting to be used later• *3 Types of Potential Energy – Gravitational Potential Energy (rollercoaster) – Chemical Potential Energy (battery) – Elastic or Compression (rubberband or spring)
Kinetic Energy• *Kinetic Energy is the energy of motion. – Anything that is moving is said to have kinetic energy. – We measure the amount of energy in joules. – Increasing speed of motion or mass of the object will increase the amount of Kinetic Energy.
Conservation of Energy• *Law of Conservation of Energy: Energy can never be created or destroyed, just transformed from one form into another Example: Roller Coasters!!
Your turn…• Refer to your handout: 5.3 Energy Transformations
*Mechanical Energy• *Mechanical Energy is the energy possessed by an object due to its motion or its stored energy of position. – It can be kinetic or potential – *an object that has mechanical energy can do work- like the Simple Machines from ch 4 – Example:
*Radiant Energy• *Radiant Energy is also known as electromagnetic energy.• *Radiant Energy is light waves that we see or feel as heat – Example: Heat from a fire; heat from the sun.
*Electrical Energy• *Electrical Energy- energy from electricity – Electrical energy is often converted from other forms, such as chemical energy (coal) through a process to become electricity. – *Examples: Electricity in our homes and businesses
*Chemical Energy• *Chemical Energy is the type of energy stored in molecules. – *Examples: Batteries; Food; Fossil Fuels
*Nuclear Energy• *Nuclear Energy comes from splitting an atom, or fusing two atoms together. When an atom is split or fused, a huge amount of energy is released. – *Examples: This is how the sun and other stars make energy – *Nuclear Power Plants
*Thermal Energy• *Thermal Energy is heat energy. Heat is the flow o energy from a high temp to a lower temp.
*Energy Transformations: Ch 5.3• If energy doesn’t get destroyed? Where does it go?• Energy is never destroyed; it transforms into one of the other types of energy. – Example: Food is chemical potential energy, that is used as kinetic energy when you run a mile
Your turn part II…• Refer to your handout, page 2: Energy Scenarios• Create flow charts to go with each scenario to show the energy transformations that are occurring.• Use a separate sheet of paper to create a poster of an energy transformation: demonstrate it with a flow chart and be ready to share it with the class. Be creative, but be accurate!