Name That Energy
No _____, No sight.
light
State the energy transformation: blasting music over the loud speaker.
Electrical -> Sound
What 3 things are mandatory for a functional circuit?
Power source, load, conducting path
What's the purpose of chemical energy for humans?
It is our fuel. It gives us the energy needed to complete tasks.
Name 3 physical properties of matter.
Mass, volume, magnetism, solubility, density, state of matter, conductivity, etc.
You can have more or less of this energy based on your location/position or shaape.
Potential Energy
State the energy transformation: Teslas (electric vehicles)
Electrical -> Mechanical
Give 5 examples of a load.
TV, game console, light bulb, speaker, game controller, tablet, laptop/computer, phone, fan, EV, etc.
What's the purpose of batteries, generators, and solar panels?
to change one form of energy into electrical energy that can then be used to loads
What's the difference between a mixture and a compound?
Mixtures are physical combinations that are easily separate whereas compounds are chemically combined and aren't easily separated.
TRICKY TRIPLE: This energy is often a byproduct of other energy transformations.
Thermal Energy
TRICKY TRIPLE - State the entire energy conversion: solar powered fan.
Solar -> Electrical -> Mechanical
Give two examples of a conducting pathway.
wires, power cords, light bulb filaments, printed circuit board traces
What's the purpose of a load?
to use electrical energy to accomplish a task
Name two forces and their respective purposes.
Gravity causes all things to be pulled towards the center of the planet. Friction slows and eventually stops motion. A push/pull cause or stop motion. Magnetism attracts and repels objects that are magnetic.
Name two combination energies (i.e. they are made up of other types of energy)
State an energy conversion: eating food.
1. Mechanical -> Chemical
2. Chemical -> Mechanical
3. Chemical -> Thermal
State a difference between an open circuit and a closed circuit.
Answers may vary but:
1. An open circuit has a break in it while a closed circuit does not.
2. Electricity will flow in a closed circuit but not in an open one.
TRICKY TRIPLE: What's the purpose of a switch?
It controls whether or not the circuit is open or closed, i.e. if electricity will flow [device is ON] or if electricity will not flow [device is OFF].
In wat ways do forces impact the motion of an object?
They can change the speed and/or direction of an object.
This type of energy can be converted into mechanical, thermal, light, and sound energy.
Electrical Energy
DAILY DOUBLE: State two energy conversions: campfire.
1. Chemical -> Thermal
2. Chemical -> Light
3. Chemical -> Sound
Name two power sources and the energy transformations that they catalyze.
Answers may vary.
Battery = chemical to electrical.
Solar panel = solar to electric.
Dam/Wind Turbine/ Pedal Power Generator = mechanical to electric.
DAILY DOUBLE: What's the purpose of solar energy? State at least one purpose.
1. The light energy is used by plants for photosynthesis
2. We use the sun and to charge solar panels.
3. The thermal energy by the sun is used to heat the Earth to a liveable degree.
What two factors affect force strength?
Mass and Acceleration