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Magnetism Study Guide
1. Magnetism is
a. a property of matter not found in all elements.
b. characteristic of atoms with a particular electron arrangement.
c. similar to electric forcesthat involves attraction and repulsion.
d. all the other statements are correct.
2. What happens when a south pole is brought near the north pole of another magnet?
a. nothing-they do not influence each other. b. attract each other.
c. repel each other. d. first attract and then repel each other.
3. The magnetic field of a magnet is felt
a. at the poles only. c. between like poles only.
b. between unlike poles only. d. all around the whole magnet.
4. The magnetic field of a magnet is strongest
a. around the north pole only c. in the middle of the magnet.
b. around the south pole only d. around both of the poles.
5. An example of anonmagnetic material is
a. iron b. aluminum c. nickel d. cobalt
6. Magnetic domains are regions
a. where the magnetic field strength is decreased.
b. in nonmagnetic materials only.
c. of random arrangement.
d. where magnetic fields of atoms are grouped together.
7. In a nonmagnetic material the domains point
a. in the same direction b. in different direction
c. in a north south direction d. in an east west direction
8. A wire carrying current wrapped around an iron core is a(an)
a. generator b. electromagnet
c. motor d. galvanometer
9. The strength of an electromagnet is weakened by
a. increasing the number of loops b. using an iron core
c. increasing the distance of the object from the electromagnet
d. increasing the voltage
10. The relationship between electricity and magnetism
a. voltage b. electromagnetism c. current d.resistance
11. Which of the following is evidence that a magnetic field surrounds a magnet?
a. a paperclip sticking to a bar magnet. b. a magnet sticking to a metal surface
c.north poles of two magnets repel each other without touching
d. receiving a shock when you touch a metal doorknob
12. A magnet sticks to a table based on this information, which material could the table be made of
a. nickel b. copper c. wood d. aluminum
13.A device that converts electrical energy into mechanical energy is called a
a. motor b. transformer c. generator d. galvanometer
14.A device that converts mechanical energy into electrical energy.
a. motor b. transformer c. generator d. galvanometer
15. When the engineer pedals the bicycle a light bulb lights up. This device is an example of
a. motor b. electromagnet c. generator d. armature
- 16. Which sentence is NOT true of magnetic, electric and gravitational forces
a. magnetic, electric and gravity forces are all non-contact
- magnetic, electric and gravity forces all have fields
- all the forces become weaker as distance between increases
- magnetic, electric and gravity all repel and attract objects
17. Magnets A and B are of equal magnetic strength. In which position will
magnets A and B have thegreatest attractive force toward each other?
C is the answer
18.
Letters A, B, C, and D represent locations on abar magnet.
Which location has the greatest magnetic force?
(a) A (b) B (c) C(d) D