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24 questions
This is the symbol for a _____?
switch
light
battery
wires
Why is electrical wiring usually covered with a layer of plastic?
To make it look pretty
To help electricity flow along the wire
To make it safe
To add more energy
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
What needs to be done to this circuit so that the lamp lights up?
Close the switch
Add a power source and close the switch
Add another lamp and close the switch
Add another lamp and a switch
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
What is the difference between a conductor and an insulator?
An insulator allows electricity to flow through it easily and a conductor does not.
A conductor allows electricity to flow through it easily and an insulator does not.
An insulator is magnetic and a conductor is not.
A conductor is magnetic and an insulator is not.
Joe set up an electrical circuit to determine whether certain materials would conduct electricity. Which of these items would complete Joe's circuit?
A metal pin
A plastic bag
A rubber ball
A wooden block
Electrical current is a flow of
Protons
Neutrons
Electrons
Atoms
Which of the following could NOT be a source of electricity?
Which of the following represents the energy conversion in power stations?
Chemical energy of fossil fuels --> Heat (Thermal energy) --> Kinetic energy of steam in boiler --> Kinetic energy of turbine --> Electrical energy
Chemical energy of fossil fuels --> Kinetic energy of steam in boiler --> Heat (Thermal energy) --> Electrical energy --> Kinetic energy of turbine
Chemical energy of fossil fuels --> kinetic energy of turbine --> Kinetic energy of steam in boiler --> Heat (Thermal energy) --> electrical energy
Which of the following is / are advantage(s) of using solar energy?
stable source of energy
large amount of electricity is generated
less pollution
everywhere in Australia is sunny
Energy transfer is ...
when energy changes from one type to another
when energy changes to the source from where it comes from
when energy stays the same but moves to another object
when energy stays the same but becomes faster
Energy transforming is ...
when energy changes from one type to another
when energy changes to the source from where it comes from
when energy stays the same but moves to another object
when energy stays the same but becomes faster
Which is NOT a renewable source of energy?
Sun
Coal
Wind
Water
Who invented the battery?
Alex Volt
Alexi Battery
Alessandro Volta
Alessandro Battery
What type of energy is not created in this circuit?
chemical
light
sound
electrical
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