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ELECTRICITY AND MAGNETISM - P. 209
Physical Science Classwork 05/11/17
PS. 40, 44, 47
1) Electromagnetic induction is the process of producing an electric current by moving a loop of wire
A) through a magnetic field
B) around a magnetic pole
C) through a magnetic domain
D) around an iron core
1)
2) The function of a generator is to change ____.
A) mechanical energy to electrical energy
C) electrical energy to chemical energy
2)
B) chemical energy to electrical energy
D) electrical energy to mechanical energy
3) In an electric generator, what is the difference if a coil of wire moves past a magnet, or a
magnet moves past a coil of wire?
MAGNETS AND MAGNETIC FIELDS - P. 203
4) The region around a magnet where the magnetic forces act is the ____.
A) magnetic electron
B) electromagnetic pole
C) magnetic pole
D) magnetic field
5) The magnetic force of a magnet is ____.
A) strongest at the poles
C) strongest at the center
3)
4)
5)
B) the same at all parts of the magnet
D) weakest at the poles
6) The standard way of drawing arrows to indicate the direction of a magnetic field is to make the
arrows point as follows:
A) from the magnet's east pole to its west pole
B) from the magnet's south pole to its north pole
C) from the magnet's west pole to its east pole
D) from the magnet's north pole to its south pole
6)
7) Which diagram correctly shows the standard way of drawing Earth's magnetic field?
7)
A)
B)
C)
D)
8) Is the north pole of Earth a magnetic north pole or a magnetic south pole? Explain.
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9) Which diagram correctly illustrates the magnetic field surrounding a horseshoe magnet, where the
north pole is above the south pole?
A)
B)
C)
D)
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10) Which phenomenon best illustrates the relationship between electricity and magnetism?
A) a current in a copper wire affects a compass needle
B) a magnet attracts iron wire but not copper wire
C) a piece of polished steel reflects electromagnetic waves
D) an electric motor causes radio interference
INTRO TO WAVES - P. 274
11) Repeating disturbances that transfer energy through matter or space are _____.
A) waves
B) periodicities
C) transmitters
D) psychoses
12) A wave will only travel as long as it has ____ to carry.
A) matter
B) energy
C) amplitude
13)
Which line segment in the diagram defines the amplitude of the wave?
A) line 1
B) line 4
C) line 2
D) mass
10)
11)
12)
13)
D) line 3
14) Which line segment in the diagram defines the wave height?
A) line 1
B) line 3
C) line 4
D) line 2
15) Which line segment in the diagram defines the wavelength of the wave?
A) line 4
B) line 2
C) line 1
D) line 3
16) Mechanical waves need a _________ through which to transport energy.
A) medium
B) energy
C) frequency
9)
D) lambada
14)
15)
16)
17) When you shake the end of a rope up and down, you create a ____________________ wave.
A) seismic
B) longitudinal
C) water
D) transverse
18) Waves in which the particles of the medium move only at right angles to the motion of the
wave are ____ waves.
17)
18)
19) When you squeeze together the coils of a spring and then release them, you are creating a ____
wave.
A) longitudinal
B) water
C) seismic
D) transverse
19)
20) Another name for a longitudinal wave is ______.
A) amplitudinal
B) compressional
20)
C) transverse
D) Doppler
21) The highest point on a transverse wave is the _____.
21)
22) The lowest point on a transverse wave is the _____.
22)
23) In a longitudinal wave, the area where the particles are farthest apart is a(n)
A) compression
B) rarefaction
C) amplitude
D) node
E) crest
F) trough
23)
24) In a longitudinal wave, the area where the particles are closest together is a(n)
A) trough
B) node
C) rarefaction
D) crest
E) compression
F) amplitude
24)
25) The crests of a transverse wave correspond to the ____ of a longitudinal wave.
A) nodes
B) rarefactions
C) troughs
25)
D) compressions
26) The troughs of a transverse wave correspond to the ____ of a longitudinal wave.
A) troughs
B) compressions
C) nodes
D) rarefactions
26)
27) The __________ of a wave is a measurement of how many times it repeats every second.
A) wavelength
B) energy
C) amplitude
D) frequency
27)
28) The unit used to measure frequency is the _______.
28)
29) The time interval during which wave motion repeats is the _______.
29)
30) The speed of any mechanical wave depends on ___________.
A) its amplitude
B) the medium through which it travels
C) its angle of reflection
D) its energy
30)
31) What is the relationship between wavelength, frequency, and speed of a wave?
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32) A sound wave traveling at a speed of 336.0 m/s has a wavelength of 3.0 m. What is the
frequency of the sound?
32)
33) How long is a wave of frequency 272 hz that is traveling through water at 1435 m/s?
34)
33)
This graph shows a change in the wavelength of a sound over time. Which graph correctly shows
the sound’s frequency over the same time?
A)
B)
C)
D)
34)