Energy and Uses of Energy
What is energy?
Energy is the ability to do work
What is electricity?
Electricity is a form of energy that results from charged particles, which can be carried by wires.
Fill in the blanks with the following words:
Neutron Proton Electron
__________ and ____________ sit inside the nucleus of an atom. ___________ orbit around the atom, and can jump from atom to atom.
Proton, neutron, electron
In Canada, what is the largest consuming sector of energy?
Industrial sector
What are the three components of an atom's nucleus?
Protons, neutrons and electrons
What is the difference between static electricity and current electricity?
Static electricity is caused by a build up of charged atoms. Current electricity is caused by charged atoms moving along a stream or path of conductive materials
What are the 6 different kinds of energy?
Thermal energy
Radiant energy
Chemical energy
Nuclear energy
Mechanical energy
Electrical energy
How does something gain an electrical charge?
By gaining or losing an electron
A simple circuit needs to have what 3 main components?
Power source (where the power is coming from) - battery
Load (what is using the power) - lightbulb
Conductor (used to connect the power source to the load) - wires
What is the Law of Conservation of Energy?
The Law of Conservation of Energy states that energy can neither be created nor destroyed, only converted from one form of energy to another.
Electricity is a ______________, which means it is made from a primary source of energy, such as petroleum, natural gas, wind power, solar energy, hydroelectric power, or geothermal power.
Secondary Source of Energy
What is the difference between a series circuit and a parallel circuit?
A series circuit is a circuit that has more than one load, but only one path that the electrons flow through. A parallel circuit has more than one load and has multiple paths.
Give an example of how electrical energy can be transformed into thermal energy (eg. you can find this in your house)
Answers may vary (eg. electrical outlet - toaster heating up toast)
Describe the journey that electricity might take to get to your house and power your television (bonus 100 points)
Hydro dam near Amherstview - runs water over large generators that spin blades - spinning blades create energy - energy is turned into electricity - electricity runs from powerlines into my home - electricity goes the the outlet that my TV is plugged into - gives the TV energy to turn on
What is a disadvantage to using a series circuit?
With only one path for the electrons to follow, there are no other pathways for the electrons to follow if the circuit breaks (eg. lights on a Christmas tree)