1. 3rd Summative Test in Science 5
Third Grading
Name: __________________________ Section: ________
1.The following are the components of a Simple Electric Circuit.
Except one.
a. battery c. wire
b. load d. metal core
2. Which of the following material can be attracted by magnet?
a. Iron b. Nickel c. Cobalt d. all of these
2. _______3. A dry cell’s terminals are properly connected to a light bulb.
Why does the bulb light up?
A. Electricity transfers from the dry cell to bulb C.The circuit has no switch
B. The bulb is luminous D.The electrons are negatively charged
______4. What needs to be done to this circuit so that the lamp lights up?
A. Close the switch
B. Add another lamp
C. Add a cell and close the circuit
D. Add a motor and close the switch
______5. What is wrong with this circuit diagram?
A. There is no switch connected in the circuit.
B. There is only one bulb in the circuit.
C. There is only one battery in the circuit.
D. There is no complete connection
3. ______6. Which statement is correct about electric current powered by a
battery?
A. It does not flow through a wire.
B. It gets used up as it goes around the circuit.
C. It does not get used up as it goes around the circuit.
D. All of the above.
______7. In a simple series circuit, why does the bulb light when you close
the switch?
A. Because the switch produces electricity
B. Because closing the switch completes the circuit
C. Because closing the switch breaks the circuit
D. Because the switch provides enough power supply
_______8. What materials will you need to produce a magnet?
A. wire C. battery
B. iron fillings D. all of these
4. 9. What will happen when a part of an electromagnet is
disconnected?
a. The electromagnet will lose its magnetism.
b. Electricity will continue to flow through it.
c. There will be an increase in the number of materials
that will be attracted to it.
d. The electromagnet will become a permanent magnet.
5. 10. How will you describe the strength of the magnetic field around the
current carrying wire?
A. Magnetic field is stronger near the current carrying wire.
B. Magnetic field is weaker near the current carrying wire.
C. The magnetic field is either strong or weak near the current
carrying wire.
D. The magnetic field has no effect.
_______11. Which of the following can make an electromagnet
stronger?
A. Adding more dry cells
B. Using an iron as a core
C. Increasing the number of turns in the coil of wire
D. All of the above
6. _______12. The material produced by making electricity flow through a coil of
wire wind around an iron nail.
A. battery C. electromagnet
B. circuit D. magnet
________13. The variable that affect the magnetism of an electromagnet
I. number of batteries
II. number of coils
III. magnet
A. I and II B. II and III C. I and III D. I, II and III
________14. Which of these increases the strength of electromagnets?
A. Decreasing the number of loops of wire around the iron core
B. Increasing the number of loops
C. Minimizing the presence of currents
D. Turning the current off
7. _________15. What will happen when a part of an electromagnet is
disconnected?
A. The electromagnet will lose its magnetism.
B. Electricity will continue to flow through it.
C. There will be an increase in the number of materials that will be
attracted to it.
D. The electromagnet will become a permanent magnet.
_________16. The variable that does not affect the magnetism of an
electromagnet
A. number of batteries C. magnet
B. number of c oils D. size of the nail
_________17. Which of the following material can be attracted by an
electromagnet
A. rubber C. plastic
B. paper clips D. cotton
8. _____18. Manny wants to increase the strength of an electromagnet.
What should Manny do?
A. Decrease the amount of electric current.
B. Remove the iron core.
C. Stop the flow of electricity.
D. Increase the turns of the wire.
_____19. Which of the following devices makes use of electromagnet?
A. electric bell C. telephone
B. electric buzzer D. all of the given options
______20. Which of the following core type will make your
electromagnet stronger?
A. air C. plastic
B. wood D. iron
9. True or False
Write true if the statement is true and false if it is false.
21. In an open circuit, the flow of electricity is continuous while in
a closed circuit, the flow if electricity is not continuous.
22. It is safe to touch an open circuit while it is dangerous to
touch a closed circuit.
23Magnets can be natural or artificial/man-made.
24. Plastics can be attracted by magnets.
25. The space around the magnet where its force is extended is
called magnetic field.
