Download Sample Test Questions - Washington Educator Skills Tests

The Washington Professional
Educator Standards Board
Washington Educator Skills Tests
Sample Test Questions
Physics
WA-SG-FLD025-02
Washington Educator Skills Tests—Endorsements (WEST–E)
SAMPLE TEST QUESTIONS
The sample test questions in this document are designed to give you an introduction to the nature
of the questions included in the Washington Educator Skills Tests—Endorsements (WEST–E).
They represent the various types of questions you may expect to see on an actual test in this test
field; however, they are not designed to provide diagnostic information to help you identify specific
areas of individual strength or weakness or to predict your performance on the test as a whole.
Work through the sample questions carefully before referring to the answer key that follows. The
answer key provides the correct response for each question and lists the objective within the test
framework to which each question is linked. When you are finished with the sample questions, you
may wish to review the test objectives and descriptive statements provided in the test framework for
this test field.
In addition to reading and answering the sample questions, you should also utilize the following
preparation materials available on the WEST Web site:

Read WEST–E Test-Taking Strategies to understand how test questions are designed to
measure specific test objectives and to learn important test-taking strategies for the day of the
test.

Review the Test Summary and Framework for your test field to familiarize yourself with the
structure and content of the test. This document contains general testing information as well as
the percentage of the total test score derived from each content domain described in the test
framework.
Please note that a set of constants and a set of formulas are provided for this test. Please refer
to these materials as needed in responding to the sample test questions. These materials are
located in the Reference Materials section at the end of this document.
A scientific calculator may be used for this test as needed in responding to the sample test
questions, and one will be provided at the test administration. Please refer to the current WEST
registration information regarding the use of calculators at the test administration.
Readers should be advised that this document, including many of the excerpts used herein,
is protected by federal copyright law.
Copyright © 2009 Pearson Education, Inc. or its affiliate(s). All rights reserved.
Evaluation Systems, Pearson, P.O. Box 226, Amherst, MA 01004
Pearson and its logo are trademarks in the U.S. and/or other countries of Pearson Education, Inc. or its affiliate(s).
—1—
SAMPLE TEST QUESTIONS
Physics
SAMPLE MULTIPLE-CHOICE QUESTIONS
1.
A truck moving at a constant speed
of 35 m/s passes a stopped police car.
Once the truck is 20 m past the police
car, the police car begins to accelerate
uniformly at a rate of 3 m/s2. The position
of each vehicle is given by the following
equations.
truck: xf = 20 + 35t
car:
xf = 1.5t2
2.
Which of the following best describes the
nature and significance of Einstein's and
Perrin's work on Brownian motion?
A.
The random behavior of small
particles suspended in a fluid
provided a value for Avogadro's
number and additional support for
the atomic hypothesis.
B.
Particle accelerator experiments
demonstrated that a particle's mass
became infinite as its velocity
approached the speed of light.
C.
Patterns in the spectral emission
lines of hydrogen provided evidence
for quantized electron jumps from
higher energy levels to lower energy
levels.
D.
Observations associated with a
collimated beam of gas molecules
from an oven provided evidence
for the statistical distribution of
molecular speeds.
How long will it take the police car to
overtake the truck?
A.
7.52 s
B.
23.9 s
C.
36.6 s
D.
47.8 s
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—2—
SAMPLE TEST QUESTIONS
Physics
Use the reaction below to answer the
question that follows.
14
6C
A
14
7N
Use the graph below to answer the
question that follows.
Position vs. Time
+ e– + m
ν
Which of the following statements follows
from the equation shown above?
A.
4.
ν particle is
The mass of the m
1 amu.
Position
3.
Time
B.
The m
ν particle has a positive
charge.
C.
A proton disintegrates into an
electron and a positron.
D.
The position versus time graph shown
above could represent the motion in which
of the following situations?
A.
A ball rolls along a horizontal
surface, strikes a wall, and rebounds
back to its starting point.
B.
A car initially at rest accelerates to
the speed limit, maintains the speed
limit, and slows down to a stop.
C.
A person walks down a sidewalk,
stops for a period of time, and walks
back to the starting point.
D.
A bicycle rider rides to the top of a
hill, pedals across the flat top, and
then coasts down the other side.
A neutron decays and a proton is
produced.
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—3—
SAMPLE TEST QUESTIONS
Physics
5.
Use the diagram and graph below to
answer the question that follows.
F2
F1
(–)
(+)
Velocity vs. Time
6.
A ball on flat ground is kicked into the air
at an angle of 60° above the horizontal and
strikes the ground 2.8 s later at a distance
of 22.4 m from where it was kicked.
Disregarding the effects of air resistance,
what is the maximum height attained by
the ball?
A.
9.8 m
B.
11.2 m
C.
19.4 m
D.
28.4 m
Velocity
(+)
Time
t1
t2
(–)
The diagram shows two forces, F1 and F2,
acting on an object moving in one dimension. The graph shows the velocity of
the object versus time (t). Which of the
following statements about the magnitudes
of the forces acting on the object is true?
A.
F1 > F2 for 0 ≤ t < t, and
F1 < F2 for t1 < t ≤ t2
B.
F1 = F2 for 0 ≤ t ≤ t2
C.
F1 < F2 for 0 ≤ t ≤ t2
D.
F1 < F2 for 0 ≤ t < t1 and
F1 > F2 for t1 < t ≤ t2
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—4—
SAMPLE TEST QUESTIONS
Physics
7.
Use the diagram below to answer the question that follows.
blue
q
red
=
v = 4 m/s
30°
=
blue v = 0
2 m/s
red
Before Collision
After Collision
A red disk on a frictionless horizontal
surface has an initial velocity of 4.00 m/s
in the horizontal direction. The red disk
strikes a stationary blue disk. The two
disks have the same mass. The final
velocity of the red disk is 2.00 m/s at
an angle of 30° below the horizontal.
What is the final speed of the blue disk?
A.
2.00 m/s
B.
2.27 m/s
C.
2.48 m/s
D.
3.46 m/s
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—5—
SAMPLE TEST QUESTIONS
Physics
8.
Kepler's second law states that a radius
vector joining any planet to the sun
sweeps out equal areas in equal lengths
of time. This law is a direct consequence
of which of the following?
A.
Use the diagram below to answer the
question that follows.
X
The gravitational energy of the
system remains constant.
B.
The linear momentum of the system
remains constant.
C.
The rotational energy of the system
remains constant.
D.
9.
The angular momentum of the
system remains constant.
r
r
q2
q1
In the diagram above, q1 and q2 are positive point charges equal in magnitude and
separated by a distance r. The distance
from q1 to X is also r. If the magnitude of
the electric field at point X due to q1 is E,
what is the magnitude of the electric field
at point X due to q2?
2E
2
A.
B.
C.
D.
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E
2
2E
2E
—6—
SAMPLE TEST QUESTIONS
Physics
10.
Use the diagram below to answer the
question that follows.
11.
Use the diagram below to answer the
question that follows.
X X X X X
wire loop
X X X X X
X X X X X
X X X X X
In the circuit shown in the diagram above,
the capacitor is fully charged. Which of
the following best describes what will
happen when the switch is closed?
A.
The current will decrease to zero
exponentially.
B.
The current will oscillate
sinusoidally.
C.
The circuit will create a series of
digital pulses.
D.
The current will rapidly increase to
a constant value.
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magnetic field
direction
The diagram above shows a loop of
conducting wire in an external magnetic
field that points into the plane of the
paper. The direction of the field is
constant, but the magnitude is decreasing in time. Which of the following
accurately describes the direction of the
conventional current in the loop and the
magnetic field at the center of the loop
produced by the current?
A.
The current is in the clockwise
direction and the magnetic field
points into the plane of paper.
B.
The current is in the clockwise
direction and the magnetic field
points out of the plane of the paper.
C.
The current is in the counterclockwise direction and the
magnetic field points into the
plane of the paper.
D.
The current is in the counterclockwise direction and the
magnetic field points out of
the plane of the paper.
—7—
SAMPLE TEST QUESTIONS
Physics
12.
Use the diagram below to answer the question that follows.
y
x
The diagram above shows two modes of oscillation of a string fixed at both ends. Which of the following
diagrams represents the superposition of the two modes?
A.
B.
y
y
x
C.
x
D.
y
x
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y
x
—8—
SAMPLE TEST QUESTIONS
Physics
13.
Use the diagram below to answer the
question that follows.
0.1 m
0.2 m
0.3 m
The diagram above represents a snapshot
of a wave on a string of length 0.30 m
at time t0. The speed of the wave in the
string is 100 m/s. What is the frequency
of the wave?
A.
200 Hz
B.
333.33 Hz
C.
500 Hz
D.
666.67 Hz
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Evaluation Systems, Pearson, P.O. Box 226, Amherst, MA 01004
14.
At the turn of the twentieth century,
experimental evidence showed that light
incident on a metal caused electrons to be
ejected from the metal's surface. Contrary
to the theory at the time, it was found that
the kinetic energy of the emitted electrons
was independent of the intensity of the
incident light. Which of the following
describes how Einstein explained this
result?
A.
by demonstrating that the electrons
lose energy through the emission of
electromagnetic radiation
B.
by showing that the low value of the
kinetic energy is supplemented by
the rest mass of the electrons
C.
by postulating that the electrons
have wave properties with a wavelength directly proportional to the
energy of the photons
D.
by assuming that the energy of
the incident light was quantized
and directly proportional to the
frequency of the light
—9—
SAMPLE TEST QUESTIONS
Physics
15.
A company claims that its infrared sensing
equipment can detect whether a human
body is behind a wall. To test the
equipment, four people are randomly
placed behind ten different walls. An
individual then uses the equipment to try
to find behind which walls the people are
hidden. The locations of the people are
not revealed to the individual operating
the equipment. This final step is taken to
reduce the:
A.
occurrence of errors in the operation
of the equipment.
B.
probability that the equipment will
return a false positive.
C.
likelihood of bias being introduced
by the operator.
D.
uncertainty associated with not
having a well-defined control group.
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—10—
SAMPLE TEST QUESTIONS
Physics
16.
Use the diagram below to answer the question that follows.
galvanometer
battery
exterior coil
interior coil
The diagram above shows two wire coils,
one inside of the other. The interior coil is
connected to a galvanometer. The exterior
coil is connected to a battery in series with
a switch. When the switch changes from
open to closed or from closed to open, the
needle on the galvanometer is deflected.
This apparatus is most effective for
demonstrating which of the following
laws of physics?
A.
Ampère's law
B.
Coulomb's law
C.
Faraday's law
D.
Gauss's law
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—11—
SAMPLE TEST QUESTIONS
Physics
17.
Use the passage below to answer the
question that follows.
Electrophoresis is used to analyze DNA
by placing a specially prepared solution of
DNA in a gelatin and applying an electric
field across the gelatin. The field causes
the DNA molecules to migrate through
the gelatin with the shorter DNA strands
traveling a greater distance than the longer
strands. In this way, the DNA can be
sorted and analyzed.
18.
On a ride in an amusement park, riders
stand against the inside wall of a large
cylinder. When the ride starts, the
cylinder and the floor begin to rotate about
the cylinder's central axis. When the ride
reaches a certain speed, the floor falls
away and the riders stay in place against
the wall. A person describes a feeling of
being "pressed against the wall." Which
of the following is a commonly held
incorrect idea associated with the motion
of the person?
In order for the electrophoresis method
described in the passage above to be
effective, the DNA molecules must:
A.
The person has a natural tendency to
follow a straight-line path tangent to
the circumference of the cylinder.
A.
be ions.
B.
B.
have a net magnetic moment.
The person's speed is constant
but the person is still accelerating
toward the center of the cylinder.
C.
be radioisotopes.
C.
D.
have a low pH value in solution.
The wall of the cylinder is exerting
a force on the person directed
toward the center of the ride.
D.
The force caused by the rotation of
the cylinder is pushing the person
away from the center of the
cylinder.
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—12—
SAMPLE TEST QUESTIONS
Physics
19.
Use the diagram below to answer the
question that follows.
axis of
rotation
=
B
The diagram above shows a circular wire
loop rotating at a constant angular speed
in a uniform magnetic field. Many
students predict that the emf induced in
the loop is greatest when the magnetic
field lines are perpendicular to the plane
of the loop. These students are most
likely confusing:
A.
electric flux with magnetic flux.
B.
magnetic flux with the rate of
change of magnetic flux.
C.
a changing electric field with a
changing magnetic field.
D.
fields produced by currents versus
fields produced by permanent
magnets.
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20.
A person in a classroom touches the
wooden top and the attached metal leg
of a desk and notices that the metal feels
colder than the wood. The person
concludes that the metal has a lower
temperature than the wood. This person
is most likely confusing temperature with
the concept of:
A.
heat capacity.
B.
Joule heating.
C.
thermal efficiency.
D.
thermal conductivity.
—13—
SAMPLE TEST QUESTIONS
Physics
ANSWER KEY
Question
Number
Correct
Response
Test
Objective
1
B
0001
2
A
0002
3
D
0003
4
C
0004
5
C
0005
6
A
0006
7
C
0007
8
D
0008
9
B
0009
10
B
0010
11
A
0011
12
B
0012
13
C
0013
14
D
0014
15
C
0015
16
C
0016
17
A
0017
18
D
0018
19
B
0019
20
D
0020
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—14—
SAMPLE TEST QUESTIONS
Physics
REFERENCE MATERIALS
Please use the reference materials on the following pages as needed in responding to the sample
test questions. These materials will also appear in test booklets.
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Evaluation Systems, Pearson, P.O. Box 226, Amherst, MA 01004
—15—
CONSTANTS
Description
Value
Acceleration of gravity on Earth (g)
9.8 m/s2
Speed of light in a vacuum (c)
3.00 × 108 m/s
Planck's constant (h)
6.63 × 10–34 J•s = 4.14 ×10–15 eV•s
Electron rest mass
9.11 × 10–31 kg
Proton rest mass
1.67 × 10–27 kg
Charge of electron
–1.60 × 10–19 C
Coulomb's constant (ke)
9.0 × 109 N•m2/C2
Boltzmann's constant (k)
1.38 × 10–23 J/K
Gas constant (R)
8.31 J/mol•K
Gravitational constant (G)
6.67 × 10–11 N•m2/kg2
Permeability of free space (μ0)
4π × 10–7 T•m/A
Avogadro's number
6.02 × 1023
FORMULAS
Description
Formula
Quadratic formula
–b ± b2 – 4ac
2a
Constant acceleration
vf = vi + aΔt
1
xf = xi + viΔt + 2a(Δt)2
v2f – v2i = 2a(xf – xi)
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—16—
FORMULAS (continued)
Description
Circular motion
Formula
v2
ac = r
1
θf = θi + ωiΔt + 2 α(Δt)2
ωf = ωi + αΔt
v = rω
a = rα
τnet = Iα
L = Iω
Spring
F = –kx
1
PE = 2kx2
Pendulum
Optics
T = 2π
m
k
T = 2π
L
g
n1 sin θ1 = n2 sin θ2
c
n=v
1
f
1
1
=p+q
Fluids
Δp = ρgh
Thermodynamics
Q = mc ΔT
PV = nRT
Electricity
kq1q2
F = r2
P = IV
F
E=q
W
⏐ΔV⏐ = ⏐ q ⏐
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—17—
FORMULAS (continued)
Description
Magnetism
Formula
F = qv × B
F = IB × B
Δφ
Δt
εave = –
φ = B⊥ A
Photoelectric effect
hf = φ + eVs
Wave-particle relations
E = hf
h
p=λ
Relativity
γ=
1
v2
1 – c2
NOTES FOR PHYSICS TEST
Not all formulas necessary are listed, nor are all formulas listed used on this test.
In questions on electricity and magnetism, the term current refers to "conventional current" and the use of the
right-hand rule is assumed.
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—18—