Energy Forms What is Energy Energy is the

Energy Forms

What is Energy? Energy is the ability to do work ¢ It allows us to change or move matter ¢ We have learned to utilize energy to make life more comfortable and efficient ¢ Energy occurs in many forms ¢

Two Main Groups ¢ Energy can be divided into two main groups: ¢ KINETIC: energy of motion l l ¢ Motion of waves, molecules, substances, and objects Radiant, Thermal, Mechanical, Sound, Solar POTENTIAL: stored energy l l Think of it as the “potential” for active energy Examples include: Chemical, Electrical, Gravitational, Nuclear

Types of KINETIC Energy

Thermal Energy Thermal = Heat ¢ As molecules in a substance move more quickly, they produce heat and thermal energy is increased ¢ Geothermal Energy- heat energy from the inside the Earth ¢ l Geo = Earth

Examples of Thermal Energy

Radiant Energy Travels in waves ¢ Includes light, x-rays, gamma rays, and radio waves ¢ Also called electromagnetic ¢ ¢ Solar energy is a special type of radiant energy that combines heat and light to warm the Earth

Examples of Radiant Energy

Mechanical Energy ¢ Energy produced by moving parts or objects Machines l Your body l The faster the motion the greater the energy l • Think of a car crash

Examples of Mechanical Energy

Types of POTENTIAL Energy

Chemical Energy ¢ ¢ Stored in the bonds of atoms and molecules Energy released from chemical reactions Is converted into other forms of energy when bonds are broken or combined Biomass- is stored chemical energy that we get from living things l l Bio = living things Use coal to create fuel

Examples of Chemical Energy

Electrical Energy created by the movement of charged electrons ¢ Often travel through wires or circuits ¢ Usually converted into other forms of energy ¢

Examples of Electrical Energy

Nuclear Energy stored in the “nucleus” of atoms ¢ Two processes to access this energy: ¢ NUCLEAR FISSION: splitting one large nucleus into two smaller ones l NUCLEAR FUSION: combining two smaller nuclei into one larger one l

Examples of Nuclear Energy

Energy Transformations Occur when one form of energy is “transformed” or converted into another more useful form ¢ For example: ¢ l Electrical Energy Light and Thermal energy

QUIZ TIME!!!!

What types of energy are shown below? Chemical, Electrical, Mechanical and Radiant/Electromagnetic Energy

What type of energy is shown below? Chemical Energy (yummy)

What type of energy is shown below? Thermal Energy

What type of energy is shown below? Mechanical Energy

What type of energy is shown below? Nuclear Energy

What type of energy is shown below? Thermal and Electrical Energy

What type of energy is shown below? Solar Energy

¢ Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving. Radio: Chemical Electrical Mechanical Sound Tires: Chemical Mechanical Thermal