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WorksheetsYear 8 Formative Assessment
Total questions: 25
Worksheet time: 18mins
What is an electrical current
Flow of electrons
Flow of protons
Flow of neutrons
Select the THREE things for electricity to flow:
An electrical source
a switch
a conductor
a bulb
What type of circuit it this
(a)
What does this symbol represent?
(a)
What does this symbol represent?
(a)
What does this symbol represent?
(a)
Is this circuit series or parallel?
Series
Parallel
What device measures voltage?
(a)
What device measures current?
(a)
In a circuit, what direction is the flow of electrons?
(a)
True or False - A Christmas tree lights are a parallel circuit
True
False
True or False - Your house is arranged as a parallel circuit
True
False
In a series circuit, if one light breaks, the electrons cant flow, and the circuit turns off.
True
False
A 4 amp current is fed through this series circuit. How many amps/ how much current will there be at the red "?"
1A
2A
4A
I don't know
A 3 amp current is fed through this Parallel circuit. How many amps/ how much current will there be at the green "?"
3A
1A
9A
I don't know
What is energy efficiency?
Reducing wasteful energy
Increasing wasteful energy
What type of WASTEFUL energy is created when using a normal light bulb?
Light energy
Sound energy
Heat energy
Which light bulb is the most energy efficient?
LED
Halogen
Incandescent
CFL
What method of producing electricity is the most energy efficient?
Hydro
Nuclear
Coal
Gas
Which of these is the best heat conductor?
Copper
Brass
Iron
Aluminium
Which of these is not an example of a heat insulator?
Silver
Cardboard
Rubber
Cotton
What materials allow the flow of electricity and heat?
(a)
What materials prevent the flow of heat or electricity?
(a)
The image shows a Sankey diagram for a light bulb that is supplied with 100 J of energy, where 80 J of energy is wasted as heat. What is the useful energy output of the bulb?
100
20
80
50
Can energy be created or destroyed?
Yes
No
