energy transformation by: courtney benson, thomas knight, and andrew thomson
TRANSCRIPT
Potential and Kinetic
Potential energy is stored energy and the energy of position
Kinetic energy is motion, the movement of energy
These categories are further divided up into subcategories
Types of Energy
•Potential: Chemical, mechanical, nuclear, gravitational, electric
•Kinetic: Radiant, thermal, motion, sound
EntropyDisarray of atoms
Ordered: solid-lower entropy
Disordered:gas-high entropy
Potential has less entropy than kinetic
Predictability of the movement of particles
First Chain
•The following energy transformation chain stems off of radiant energy
•First of two chains resulting from sun
Solar
• Sun’s rays melts snow, radiant energy
• Entropy is increased water, from a solid to a liquid
• Reaction of hydrogen being fused together in a nuclear reaction
• Sun melting snow is thermal
Hydroelectricity
• Gravitational potential energy water stored in water pushing against dam
• Turbines in dam extract electrical energy from high pressure
How it WorksFlow of water makes
blades on turbine spin
This rotates a spindle in the turbine, which leads into the generator
Then energy is transferred into electrical energy
Electricity in Action
• Electricity from dam used to power electric hybrid car
• Energy within rechargeable battery, electrical and chemical energy stored
• Pistons apply mechanical energy
• Run by batteries, but more directly move car
• Same pistons can power electromagnetic engines, which are magnetic as well as electric
•Water is heated by thermal energy
•Water is changed to steam, also thermal
•Increase of entropy, liquid to gas
•Steam directed through turbine to power electric generator, compressed, mechanical energy
•The generator runs propellors of a large ship