Pretest for CP -TLE Electrical Technology, First year, quarter 1 on Electrical Gadgets

1. Multiple Choice: Write the letter in
your answer sheet.

2. The smallest part of something is
__________________.
A. a nucleus B. a proton
C. an electron D. an atom

3. You need electricity to do many
things, but you do not need it to:
A. Watch TV B. Start a car
C. Read a book D. Surf the internet

4. This part of the atom has no charge
and is part of the nucleus:
A. Nucleus B. Protons
C. Electrons D. Neutrons

5. Negatively charge particles of an
atom is a _______________.
A. Nucleus B. Protons
C. Electrons D. Neutrons

6. This part of the atom is part of the
nucleus and it has a positive
charge:
A. Nucleus B. Protons
C. Electrons D. Neutrons

7. This part of the atom is very small
and moves around outside the
nucleus:
A. Nucleus B. Protons
C. Electrons D. Neutrons

8. Objects that have like charges :
A. Repel B. Attract
C. Magnetize D. Stay together

9. Objects with unlike charge :
A. Repel B. Attract
C. Break D. Stay away together

10. Objects that have no charge are
attracted to:
a. objects with no charge
b . only objects with a positive charge
c. all charged objects

11. The path the electrons flow through is
the:
A. Circuit B. battery
C. Electrical current d. wires

12. One source of electricity you can use
to power a flashlight is made by a :
a. generator b. battery
c. atom d. current

13. It is the flow of moving electrons.
A. Electronics B. Electrons
C. Electricity D. Current

14. 13. The electrons move
from_______to_______ terminal.
A. + to -
B. – to -
C. – to +
D. + to +

15. 14. A material allowing the flow of
electric current
A. Conductor
B. Insulator
C. Connector
D. Wire

16. 15. Connecting a short metal wire
between the terminals of the
battery.
A. Open Circuit B. Close Circuit
C. Short Circuit D. Bad Circuit

17. 16.
A. Open Circuit B. Close Circuit
C. Short Circuit D. Bad Circuit

18. 17.
A. Open Circuit B. Close Circuit
C. Short Circuit D. Bad Circuit

19. 18. This is made possible when a
conductor, such as coil of wire
rotates in a magnetic field.
A. Electromagnetism
B. Friction
C. Photoelectric
D. Chemical action

20. 19. Certain materials are rubbed
against each other to produce
charges.
A. Electromagnetism
B. Friction
C. Photoelectric
D. Chemical action

21. 20. Certain materials emit their
electrons when they are exposed
to light under right conditions.
A. Electromagnetism
B. Friction
C. Photoelectric
D. Chemical action

22. 21. There is a breaking up of atomic
structure of some elements, thus
releasing a great amount of energy.
A. Piezo-electric
B. Photoelectric
C. Nuclear Method
D. Thermoelectric

23. 22. Uses certain materials, which
when made to vibrate, produce
voltage.
A. Piezo-electric
B. Photoelectric
C. Nuclear Method
D. Thermoelectric

24. 23. This method utilizes
materials that release electrons
when heated enough.
A. Piezo-electric
B. Photoelectric
C. Nuclear Method
D. Thermoelectric

25. 24. An object that attracts metals
such as iron and steel.
a. Magnet
b. magnetic field
c. Pole
d. attract

26. 25. The space around a magnet in
which a magnetic force can be
found.
a. Magnet
b. magnetic field
c. Pole
d. attract

27. 26. The end of a magnet.
a. Magnet
b. magnetic field
c. Pole
d. attract

28. 27. To pull toward one another, as
opposite poles of two magnets pull
toward one another.
a. Magnet
b. magnetic field
c. Pole
d. attract

29. 28. A form of the mineral magnetize
that is naturally magnetic or has
become magnetized.
a. Lodestone
b. Compass
c. magnetic field
d. pole

30. 29. An instrument that uses a
freely moving magnetic needle to
indicate direction.
a. Lodestone
b. Compass
c. magnetic field
d. pole

31. 30. A piece of iron that becomes a
temporary magnet when electricity
flows through an insulted wire
wrapped around it.
a. Lodestone
b. Compass
c. magnetic field
d. electromagnet

32. Test 2
a. Give the steps in making the electromagnet (5 points)
1.
2.
3.
4.
5.
b. Draw the electromagnet project(5 points)
.