I Henry investigates how the flow of electricity produces magnetism. He follows this procedure. Electromagnetic Investigation Battery Since only two paper clips adhered to the nail, which action would BEST make the electromagnet attract more paper clips? A. Replace the nail with a pencil. B. Increase the number of colls of insulated wire. C. Connect an on/off switch between the battery and the nail. D. Reverse the direction of the positive and negative poles of the battery.
I Henry investigates how the flow of electricity produces magnetism. He follows this procedure. Electromagnetic Investigation Battery Since only two paper clips adhered to the nail, which action would BEST make the electromagnet attract more paper clips? A. Replace the nail with a pencil. B. Increase the number of colls of insulated wire. C. Connect an on/off switch between the battery and the nail. D. Reverse the direction of the positive and negative poles of the battery.
Transcribed Image Text:Directions: Answer the following question(s).
i Henry investigates how the flow of electricity
produces magnetism. He follows this procedure.
2 Jonathan models two kinds of circuits containing
identical bulbs and batteries.
Electromagnetic Investigation
inlated wre
Battery +
Crcuit
Circuit A
batery
If one of the bulbs in each circuit breaks, which of
the following explains what would happen to the
rest of the bulbs?
Since only two paper clips adhered to the nail,
which action would BEST make the
electromagnet attract more paper clips?
A. Electrons would stop flowing in all bulbs of
circuits A and B.
A.
Replace the nail with a pencil.
B. The flow of electrons would stop in all bulbs of
circuit A but not of circuit B.
B. Increase the number of coils of insulated wire.
C. Connect an on/off switch between the battery
and the nail.
C. The flow of electrons would stop in all bulbs of
circuit B but not of circuit A.
D. Reverse the direction of the positive and
negative poles of the battery.
D. Electrons would stop flowing only in the broken
bulbs of circuits A and B.
3 If a circuit has a current of 0.25 A and a voltage
of 3 V, how much resistance is in the circuit?
A. 0.083 ohms
B. 0.75 ohms
C. 1.5 ohms
D. 12 ohms
Directions: Answer the following question(s).
4 The ambulance is moving towards the woman standing
6 A beam of light is reflected off a mirror.
on the sidewalk.
As the ambulance approaches the woman, how will
she perceive the pitch of the siren and why?
Which of the following diagrams best illustrates
how light rays are reflected off a mirror?
A. She will perceive a higher pitch because the
speed of the sound waves is faster.
B. The pitch she will perceive will be the same, only the
A.
volume of the sound is louder.
C.
She will perceive a higher pitch because the
frequency of the sound waves is higher.
D. The pitch she will perceive will be the same, only
the intensity of the sound is greater.
E The tuble
iffesoat
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