Types of Energy and Particle Model Overview
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33 Terms
Chemical Energy
Energy stored in chemical bonds.
Kinetic Energy
Energy stored in a moving object.
Elastic Potential Energy
Energy stored in a stretched object.
Thermal Energy
Energy stored in the vibration of the particles.
Gravitational Potential Energy
Energy stored in a raised object.
Work formula
work = force x distance.
Renewable resources
Resources that can be replenished.
Non-renewable resource
Resources that cannot be replenished.
Examples of renewable energy sources
tidal power, hydro-electric, wind.
Examples of non-renewable energy sources
coal, oil, nuclear.
Energy Transfers
Heat, Electrical, Radiation, Mechanical.
Particle Model - Solid
Particles are tightly packed in a regular structure. They have the least kinetic energy.
Particle Model - Liquid
Particles are tightly packed but free to move past each other.
Particle Model - Gas
Particles are spread out and move randomly. They have the highest kinetic energy.
Formula for density
density = mass/volume.
Phase Change - Solid to Liquid
Melting.
Phase Change - Liquid to Gas
Boiling/Evaporation.
Phase Change - Gas to Liquid
Condensation.
Phase Change - Liquid to Solid
Freezing.
What is resistance in electrical terms?
The measure of how much a material opposes the flow of electric current.
How is resistance measured?
In Ohms (Ω).
What is potential difference?
The energy transferred per unit of electric charge between two points in a circuit.
How is potential difference measured?
In Voltage (V).
What is power in the context of work and energy?
The rate at which work is done or energy is transformed.
How is power measured?
In Watts (W).
What is the current like in a series circuit?
The current is the same everywhere.
How is the potential difference distributed in a series circuit?
The potential difference is shared across all components.
How is the total resistance calculated in a series circuit?
The total resistance is the sum of all resistors.
How is current distributed in a parallel circuit?
Current in a parallel circuit is shared across all components.
What is the potential difference in a parallel circuit?
The potential difference in a parallel circuit is the same everywhere.
How does the total resistance of resistors in a parallel circuit compare to individual resistors?
The total resistance of resistors in a parallel circuit is less than any individual resistors.
What is a current?
The rate flow of electrical charge around a circuit.
How is current measured?
Measured in Amps. (A)