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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:
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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 • Motion of waves, molecules, substances, and objects • Radiant, Thermal, Mechanical, Sound, Solar • POTENTIAL: stored energy • Think of it as the “potential” for active energy • Examples include: Chemical, Electrical, Gravitational, Nuclear
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 • Geo = Earth
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
Mechanical Energy • Energy produced by moving parts or objects • Machines • Your body • The faster the motion the greater the energy • Think of a car crash
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 • Bio = living things • Use coal to create fuel
Electrical Energy • Energy created by the movement of charged electrons • Often travel through wires or circuits • Usually converted into other forms of energy
Nuclear Energy • Energy stored in the “nucleus” of atoms • Two processes to access this energy: • NUCLEAR FISSION: splitting one large nucleus into two smaller ones • NUCLEAR FUSION: combining two smaller nuclei into one larger one
Energy Transformations • Occur when one form of energy is “transformed” or converted into another more useful form • For example: • Electrical Energy Light and Thermal energy
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
Radio: Chemical Electrical Mechanical SoundTires: Chemical Mechanical Thermal • Draw a flow map showing the flow of energy transformations in a car from starting vehicle to driving.