Vocabulary
The ability to do work
Energy
Energy that is stored through stretching or squashing
Elastic potential energy
The law of conservation of energy
Energy cannot be created or destroyed, it changes from one form to another.
The arrow points in the _________ of the transformation.
direction
TECAICELLR
ELECTRICAL
Energy often moves from one object to another
Energy transfer
Energy stored at the centre of atoms
Nuclear energy
2 types of waste energy
Sound energy and thermal energy
What information is written on the left hand side of the diagram
The energy input (type of energy, amount and units)
AOIRALNIVGATT
GRAVITATIONAL
Energy can be converted from one type to another.
Energy transformation
Energy that our eyes can usually detect. It moves in small packets of energy called photons.
Light energy
How do we represent an energy transformation scientifically?
Flow diagrams / Sankey diagrams
What information is written the at the tip of the straight arrow.
Useful energy output (type of energy, amount and units)
LECMHICA
CHEMICAL
The energy of motion
Kinetic Energy
Is generated by friction, burning chemicals and electrical devices.
Thermal energy
Efficient transformations produce less ______ energy.
Waste
What information is written the at the tip of the arrow pointing downwards (to the right).
Waste energy (type of energy, amount and units)
The faster the object is moving, or the more mass the object has, the greater the ______ energy
Kinetic
Energy that can be stored
Potential energy
Produced by the vibration of particles
Sound energy
The energy at the end must be ________ to the energy present at the beginning.
Equal
Unit of energy in the International System of Units (SI)
Joule
What is the formula to calculate energy efficiency?
useful energy (output)
efficiency = _________________ X 100
total output energy