SYSTEMS
What is a system?
A set of parts that work together to perform a specific function or task.
What is energy?
The ability to do work or cause change.
What is energy dissipation?
Energy spreading into the surroundings, often as heat or sound.
What is automation?
Using machines or technology to do tasks with little or no human involvement.
What does efficiency mean?
How well a system uses energy to do useful work.
What do we call what goes into a system?
Inputs
What law states that energy cannot be created or destroyed?
The Law of Conservation of Energy.
Which force causes energy loss as heat in many systems?
Friction
Name one everyday example of automation.
Automatic doors, washing machines, self-checkouts, traffic lights, etc.
Is any system 100% efficient? Why or why not?
No — some energy is always dissipated.
What do we call what comes out of a system?
Outputs
When energy changes from one form to another, what happens to the total amount of energy?
It stays the same.
Name two ways energy can dissipate from a system.
Heat, sound, vibration, light (any two).
How can automation improve safety?
It can perform dangerous tasks instead of humans.
How does reducing friction affect efficiency?
It increases efficiency by reducing energy loss.
Give one example of a mechanical system.
Bicycle, pulley, lever, gears, elevator.
What type of energy is stored energy?
Potential energy.
When bike brakes are applied and get warm, what is happening to the energy?
Energy is dissipating as heat.
What is one benefit of automation in factories?
Faster production, fewer errors, increased efficiency (any valid).
Why might a society choose automation despite drawbacks?
Increased efficiency, productivity, safety, lower costs.
Why is it important that parts of a system work together efficiently?
To reduce wasted energy and improve performance.
What type of energy is energy of motion?
Kinetic energy.
Does energy disappear when it dissipates? Why or why not?
No — it spreads out but is still conserved.
What is one possible negative impact of automation?
Job loss, need for retraining, dependence on machines.
How can automation impact the environment positively or negatively?
Can reduce waste or increase energy use/pollution (balanced answer).