Part one: multiple choice
Circle the correct answer
1. We can get electric shocks from naked wires…………….
a) With plastic covering
c) without insulators
b) Without rubber covering
d) B and C are correct
2. ……………….. is the path followed by an electric current.
a) An electric shock
c) A switch
b) A copper wire
d) an electric circuit
3. The switch enables the current to move when it is……………
a) Open
c) closed
b) None
d) both
4. The movement of charges from one material to another cause a……
a) Friction
c) damage
b) Sparks
d) reproduction
5. Another name for electrostatics is……………………..
a) Circuit
c) translucent
b) Static electricity
d) opaque
6. We can protect tall buildings from lightening by using…
a) Lightening arrestors
c) lightening attractors
b) Fencing them
d) painting them
7. Materials that allow electricity to pass through them are called…..
a) Conductors of heat
c) conductors of electricity
b) Conductors of sound
d) conductors of light
8. Example of material that allow electricity to pass through them is…
a) Copper wire
c) plastic wire
b) Water
d) C is incorrect
Part two: true or false
1. Water does not conduct electricity (
)
2. Do not use a single socket to operate all your electric appliances at the same
time (
)
3. Lightening hits the lowest point (
)
4. You can handle electric appliances when they are wet (
)
5. Avoid swimming or crossing rivers during thunderstorm (
)
6. Electric charge is the pathway of electricity (
)
7. Switch controls lamp to off only (
)
8. Wire are non-conductors in the simple circuit (
)
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9. Additional of many cells are called battery (
)
10.
You can handle electric appliance with dry hands (
)
Part three : fill the blank space with a neat and clear answer from the
box
1.
2.
3.
4.
5.
6.
7.
8.
9.
{converter, terminals, light up, charged, dry cell (battery), not follow,
insulators, not light up, wet hands, thunderstorm}
When current flows through the filament, the bulb will __________________________
Lightening occurs when there is a ___________________________________
The two ends of the torch cell are called_________________________
If positive terminal is joined to positive terminal, the current will________________
And the bulb will ___________________________
A______________________ changes electric charges to another form of energy.
Plastic and rubber materials are___________________________________
A torch cell is also known as__________________________________
Electric equipment should not be handled with ____________________________
A car battery can be __________________but a torch cell cannot.
Part four: extended questions
Answer all the questions with neat and clear answer.
1. Define the following terms:
a) Electrostatics
___________________________________________________________________________________
_____________________________________________________________________
b) Electric circuit
___________________________________________________________________________________
_______________________________________________________________________
c) Switch
_______________________________________________________________________________
2. Write down three safe ways we can deal with thunderstorm.
______________________________________________________________________________________
______________________________________________________________________________________
_________________________________________________
3. Explain how lightening is generated during thunderstorm.
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______________________________________________________________________________________
______________________________________________________________________________________
_____
4. Draw a simple circuit and label its parts.
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