Ergstown
What was Ergstowns problem?
They had a problem with their electrical system, because they kept on having frequent blackouts.
What are the 5 forms of energy we focused on?
Light, Thermal, Sound, Electrical, Motion.
Name 5 electrical Devices.
Phone, TV, Car, Lights, Radio.
A town relies on wind to power up their lights. How can wind power up a town?
The motion energy of the wind turbine converts into electrical energy through a generator.
Motion energy is converted into electrical energy.
Define Energy.
Ability to move or change.
What 2 variables were we testing for Ergstown?
Led Lights vs Lightbulbs
Which sources are renewable, and which sources are not renewable?
Renewable:Sun, Wind, Water
Non renewable: Fossil Fuels
What is an electrical device?
Any device that has electrical energy as an input.
What is a solar cooker?
A device that uses sunlight to cook for.
Define Variable.
Anything we can change in an experiment.
What were some things/places that were taking up electricity?
The hospital, the subway, and the streetlights.
What energy conversion takes place when you turn on a radio?
Electrical energy transfers through the wires, and then when you turn on the radio electrical energy converts into sound energy.
Energy_____________through the wires to the devices.
Transfers
How does a solar cooker cook food?
Trapping sunlight and converting it into thermal energy to cook the food.
Define Renewable.
A natural source that can replenish itself.
A natural source that never runs out.
What were the best possible solutions?
Moving the grid underground, adding backup wires, or strengthening the grid.
What is the input energy for a toaster? What is the output energy for a toaster?
Electrical, Thermal
When Sasha plugs in her hair dryer and turns it on, what energy conversion is taking place
Electrical energy to thermal energy.
What are the benefits of driving a solar powered bike vs a bike powered by fossil fuels?
Solar energy produces less pollution then fossil fuels.
Solar energy is a renewable source.
Define reliable.
A source we can count on.
What can make a system fail?
If a wire is broken electrical energy will stop flowing, or if a par of a system is broken electrical energy will also stop flowing.
What is energy Conversions?
Energy Conversion is _____________________________from one_______ to __________.
How does energy transfer from the source to a device?
The source takes in a natural source, and converts it into electrical energy through a generator. Than the generator transfers electrical energy through the wires to the device. When you plug in the device then turn it on the device and convert electrical energy to another form of energy.
Variables.
Define engineer.
A person who designs something by using science to solve a problem.