Electrical Energy - The Types of Energy Flashcards
Electrical Energy
the energy of charged particles
What uses electrical energy?
The human body
Eg. Moving your eyes to read relies on electrical signals in your muscle
Eg. Electrical signals help maintain breathing and heartbeat
Technology - eg. touch sensitive screens and robots, maglev trains
Many different types of energy can be transformed into electrical energy
Energy is neither created or destroyed
It is transformed from one kind of energy to another kind of energy
Mechanical Energy
The sum of potential energy and kinetic energy
Kinetic Energy
: Energy of motion
Potential Energy
: Stored energy that a system has due to its position or condition
Mechanical Energy example?
Eg. Water at the top of a waterfall, just before it falls, has potential energy because of its position, and kinetic energy because it is moving
Chemical Energy
: Energy stored in chemical bonds, and released when a chemical reaction occurs
Eg. Batteries store chemical energy
Eg. Chemical energy stored in animals and plants is called biomass
Eg. Fossil fuels (coal, oil, natural gas) store chemical energy
Solar Energy:
Energy carried by electromagnetic radiation given off by the Sun
Fossil fuels and biomass result from energy from the Sun being captured by plants and plant-like organisms
Nuclear Energy
: Energy generated by forming new atoms
Nuclear fusion
: New atoms are made as smaller atoms collide and fuse (occur in the Sun and stars) -> lots of energy
Nuclear fission
: New atoms are made by splitting larger atoms (carried out in reactors on Earth) ???
Thermal Energy
: Energy due to the rapid motion of particles that make up an object; detected as heat
Sources include nuclear reactions or from Earth’s interior (geothermal energy), where steam and hot water form naturally
Eg. Geysers, volcanoes, hot springs
Eg. Harrison Hot Springs, where earth’s core is thinner = more geothermal energy
