Energy
Name 3 types of energy
Chemical, mechanical, gravitational, electrical, thermal, light, sound, nuclear, elastic, magnetic
Describe the symbol for a light bulb
Circle with cross
Is metal wire an insulator or conductor?
Conductor
Can energy be created?
No
Define energy transfer
Energy transfer is the movement of same form of energy from one location to another.
Define energy
The ability to do work
Which type of circuit has all circuit elements arranged in a single path?
Series circuit
Identify 2 materials that are insulators
Rubber, wood, cork
Can energy be destroyed?
No
Energy transformation is the process of changing energy from one type of form to another.
What are the two general types of energy?
Potential and kinetic
A circuit with more than one path for current flow.
Describe the difference between insulators and conductors
An electrical insulator is a material in which electric current does not flow freely, whereas an electrical conductor is a substance or material that allows electricity to flow through it.
Energy cannot be destroyed nor created
Provide an example of energy transfer.
Kicking a ball
Is energy stored in a battery potential or kinetic energy?
What are the 3 essential components of a circuit?
battery, light, wire
How could you test if a material is a conductor or an insulator?
Put the material in a series circuit and see if the light bulb turns on. If the light turns on, the material is a conductor.
Describe one benefit of a parallel circuits
If one bulb breaks, the other sections of the circuit will still have a flow of energy, and therefore the other bulbs will still light up
Provide an example of energy transformation
Electrical energy powering a light bulb and transforming into light and heat energy
What is energy measured in?
Joules
Explain what electric current is
An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space.
Explain why household wires have rubber coatings. Give 2 reasons.
To prevent electrical shock and to prevent electricity from being wasted by going into the surrounding environment
Is seawater an insulator or conductor and why?
Conductor, as it contains salt/ions
Potential gravitational energy at the top of the roller coaster transforms into kinetic movement energy as the carriage travels down the slope of the rollercoaster.