A
The ability to do work.
What is energy?
Energy stored in an object because of its position or condition is called.....
Potential energy
The energy of movement is called......
Kinetic energy
Write an energy flow diagram for a toaster.
electrical energy -> heat energy + sound energy
What is a Sankey diagram?
It shows energy inputs, useful outputs and wasted by-product outputs in arrows. The bigger the arrow the higher the energy value
Complete the statement; energy cannot be ___________ or ___________, just _____________.
created, destroyed, transformed
Energy is stored in an object that is stretched
Elastic potential energy
The only type of energy that can be seen.
Light energy
Write an energy flow diagram for a TV
electrical energy -> light energy + sound energy + heat energy
What does energy efficiency mean?
How much useful energy is produced compared to the total energy used.
When energy is moved from one object/place to another.
energy transfer
Energy stored in an object that is held stationary above the ground.
Gravitational potential energy
The energy of movement of vibrating particles within a substance.
Thermal energy or heat energy
Write an energy flow diagram for an electric fan
electrical energy -> kinetic energy + sound energy + heat energy
What is the unit for electrical consumption?
Kilowatt-hour (kWh)
When energy is changed from one form to another.
energy transformation
Energy that is stored within a substance.
Chemical Potential energy
The energy of moving charges particles.
Electrical energy
What does the term by-product mean?
something that is produced but was not wanted, it is wasted
What do energy efficiency stickers show?
How efficient the appliance is, more stars = more efficient
What is the original source of energy on Earth?
The Sun.
Energy stored in a system of charged particles.
Electrical potential energy
The energy of vibrating particles that travel through a medium/substance in a wave.
Sound energy.
What are the 2 most common by-products of energy transormations?
Heat and sound
What are the features of an energy efficient 7-star home?
1. good insulation in walls and ceilings
2. double glazed windows
3. solar panels
4. energy efficient lighting (LED lights)
5. proper house orientation for natural heating and cooling