FOR MORE CLASSES VISIT tutorialoutletdotcom An automotive technician is skeptical of published miles -per -gallon figures and thus performs an experiment to see how fuel -efficient one particular car actually is. The car's mileage recorder is the dashboard odometer. What should the technician do to obtain the car's correct miles -per -gallon figure? A. Use the car's owner manual. Obtain the car's fuel tank capacity and record as Y gallons.

1. An automotive technician is skeptical of published miles
FOR MORE CLASSES VISIT
tutorialoutletdotcom
An automotive technician is skeptical of published miles -per -gallon
figures and thus performs an
experiment to see how fuel -efficient one particular car actually is. The
car's mileage recorder is the
dashboard odometer. What should the technician do to obtain the car's
correct miles -per -gallon figure?
A. Use the car's owner manual. Obtain the car's fuel tank capacity and
record as Y gallons. Use the
car's odometer and drive X miles. Calculate the quotient X/Y.
B. Top off the fuel tank. Record the number of gallons as Y. Drive X
miles using the car's odometer.
Calculate the quotient X/Y.
C. Top off the fuel tank. Use the car's odometer and drive X miles. Then
top off the fuel tank again,
recording the number of gallons as Y. Calculate the quotient X/Y.
D. Use the car's odometer and drive X miles. Then top off the fuel tank
with gasoline, recording the

2. number of gallons as Y. Calculate the quotient X/Y. 2. A gardener
hypothesizes that potted plants lose more water to evaporation than they
absorb with
their roots. The gardener also observes that no water escapes from the
pot and that the plant's weight
depends only on the amount of water absorbed. Which method correctly
tests this hypothesis?
A. Record the amount of water added to the pot every day for one
month. Also record the humidity
of the surrounding atmosphere each day with a barometer. Graph these
measurements.
B. Fill two identical buckets with the same amount of water. Use one
bucket to water the plant for
one month. Then compare the amount of water left in the two buckets.
C. Weigh the potted plant with dry soil. Keep track of the total amount
of water added to the pot
for one month, then weigh the potted plant again once the soil is dry.
D. Weigh a sample of the dry soil and the plant root. Record the total
amount of water added to
the pot in one month, then weigh new samples of the soil and of the
plant root. 3. Which characteristic must a scientific hypothesis possess?
A.
B.
C.

3. D. It must be able to be proven false.
It must be scientifically correct.
It must contradict existing data.
It must conform to an existing law. 4. What is a characteristic of a
scientific hypothesis?
A.
B.
C.
D. It must be repeatable.
It must be measurable.
It must be disprovable.
It must be provable. 5. A scientist makes a hypothesis about an observed
phenomenon in nature. The scientist records and
analyzes the observations. The analysis of data supports the hypothesis
to be correct. Which step should
come next if the scientist is to maintain a valid scientific discovery? A.
The scientist and other scientists must perform many more tests to
provide evidence for the
hypothesis. If one carefully performed test and analysis of the data
contradicts the hypothesis,
the hypothesis must be re-evaluated.
B. The scientist and other scientists must perform more tests to prove the
hypothesis. If three tests

4. are carefully performed and prove the hypothesis, then the hypothesis
becomes fact
C. The scientist and other scientists must perform many more of the tests
to prove the hypothesis.
If carefully -performed tests or a data analysis contradicts the
hypothesis, the scientist still has a
second or third chance to try to prove the original hypothesis is correct.
D. The scientist is finished. The original hypothesis was proven and is
now fact 6. A set of observations contains data that do not fit a
hypothesis. A new hypothesis and a more accurate
measurement technique are proposed to explain the data that do not fit
the original hypothesis. Which
course of action should the scientific community take regarding the new
hypothesis?
A. Prominent scientists should vote on whether to accept the new
hypothesis.
B. The new hypothesis should be disregarded because unexplained data
is trustworthy.
C. Scientists are not required to account for unexplained data, so the new
hypothesis should be
ignored.
D. The new hypothesis should be tested using the new measurement
technique to determine if it is
correct. 7. A company claims to have built a device that multiplies input
energy.What should the company do to

5. demonstrate that their device is based on a scientific approach?
A.
B.
C.
D. The company should conduct a poll of previous customers to see if
they would use the device.
The company should conduct and publish a test to prove whether the
hypothesis is wrong.
The company should interview potential customers who would use the
device.
The company should show comparisons to other unrelated devices from
their product line. 8. A pharmaceutical company claims that if sick
people take their specific product, they will recover
faster from their illness. The product has been tested on a thousand
people.Which type of claim is
presented in the scenario above?
A.
B.
C.
D. Quasi -scientific
Non-scientific
Scientific

6. Pseudo -scientific 9. In Which statement about a scientific hypothesis is
true?
A. A hypothesis must be proven to be true. B. A hypothesis can be
accepted or rejected but never proven to be true.
C. Accepting or rejecting a hypothesis is the same as proving whether
the hypothesis is true.
D. A hypothesis must not have the ability to be proven wrong. 10.
Which term is an explanation of a natural phenomenon that has been
repeatedly tested without
contradiction?
A.
B.
C.
D. Theory
Hypothesis
Experiment
Observation 11. A scientist is developing a protective coating. The
scientist first determines how certain atoms
combine to form the coating. The scientist then determines how the
bonds adhere the coating to the
surface. Finally, the scientist must determine how the forces and energy
are used to distribute the
coating evenly. Which order correctly identifies the fields of science
used in this experiment?

7. A.
B.
C.
D. Chemistry, Physics, Biology
Physics, Biology, Chemistry
Chemistry, Chemistry, Physics
Biology, Physics, Physics 12. The volume of a sphere is (4/3)π(radius) 3.
What is the volume of a sphere that has a radius of 6 in?
Express the result in cubic inches.
A.
B.
C.
D. 55.21 in3
904.78 in3
25.12 in3
356.21 in3 13. The distance between the earth's center and the sun's
center is R= 150,000,000 kilometers. The
circumference of a circle equation is C= 2πR. How many kilometers
(km) does the earth travel in space in
one year, assuming the earth's orbit is circular? Round to the nearest
thousand.
A.

8. B.
C.
D. 584,040,000 km
471,569,000 km
365,012,000 km
942,478,000 km 14. Which scenario depicts an example of a direct
relationship?
A. The more the resistance, the lower the current. B. The less you study,
the harder an exam will be.
C. The windier the weather, the faster rate at which the paint dries.
D. The more you sleep, the less tired you are. 15. Which scenario depicts
an example of an inverse relationship?
A. As a juggler juggles balls more quickly, the greater the force he will
feel on his hands.
B. If the distance between two balls is increased, the force of attraction
between them decreases.
C. As a person gains more experience in their professional field, the
more knowledgeable they
become.
D. If the value of a resistor is kept constant in a circuit, current increases
with the increase in
voltage. 16. An object of mass m is acted upon by an unbalanced force
that causes it to accelerate by a. What is

9. the object's acceleration if the mass is doubled?
A.
B.
C.
D. 2a
(1/4)a
(1/2)a
4a 17. After working a long day in the lab, a student rushes to the
university to attend evening classes and
bumps her head on the glass door leading to the parking lot while
looking for her car keys. How does the
force on the student's head and the force on the glass door compare?
A.
B.
C.
D. The force experienced by the student's head and glass door are not
related.
The student's head and the glass door experience the same amount of
force.
The glass door experiences a greater force than the student's head.
The student's head experiences a greater force than the glass door. 18.
What is required for an object moving in a circle with a constant speed?

10. A.
B.
C.
D. Zero velocity
Changing average speed
Zero average speed
Changing velocity 19. A ball is thrown upward from the ground with an
initial speed of 20 m/s. Assume that g = 9.80 m/s 2 What height above
the ground will the ball reach before stopping, ignoring air resistance?
A.
B.
C.
D. 10.4 m
20.4 m
4.4 m
40.4 m 20. A blue billiard ball traveling at 2 m/s hits a red billiard ball
that is traveling at 1 m/s. The billiard balls
bounce off each other in an elastic collision. How does the momentum
change after the collision?
A. The momentum of the blue ball increases and the momentum of the
red ball decreases after the
elastic collision.

11. B. The total momentum of the blue and red balls remains unchanged
after the elastic collision.
C. The total momentum of the blue and red balls increases after the
elastic collision.
D. The total momentum of the blue and red balls decreases after the
elastic collision. 21. Momentum = mass x velocity
A ball that has a mass of 3 kg and moves with a velocity of 2 m/s to the
right hits a resting clay ball that
has a mass of 1 kg. After colliding, both balls get stuck together and start
moving as a single system.
What is the combined velocity of both balls after the collision?
A.
B.
C.
D. 0.5 m/s to the right
4 m/s to the right
1.5 m/s to the right
6 m/s to the right 22. Assume that g = 9.80 m/s2.
A ball with a mass of 5 kg is thrown from the top of a building. It
experiences an air resistance of 2 N.
What is the net force acting on the ball due to gravity and air resistance?
A.
B.

12. C.
D. 55N
51 N
47N
49 N 23. A skydiver with a mass of 75 kg jumps from a plane. What is
the net force acting on the skydiver after
hitting terminal velocity?
A.
B.
C.
D. 9.8 N
294N
735N
0N 24. Linear velocity = rotational velocity x π x diameter
A student is riding a bicycle. The diameter of the wheel of the bicycle is
50.0 cm. What is the linear speed
of a point on the wheel if it rotates at the rate of 100 rotations per minute
(rpm)?
A.
B.
C.

13. D. 7,850 centimeters per minute
6,280 centimeters per minute
3,930 centimeters per minute
15,700 centimeters per minute 25. Torque = forceperpendicuiar x lever
arm distance
Student A and Student B are sitting on opposite ends of a lever balanced
on a fulcrum. Student A weighs
120 lb and Student B weighs 96 lb. Student B sits 10 feet from the
fulcrum. How far away from the
fulcrum should Student A sit to attain equilibrium?
A.
B.
C.
D. 10 ft.
7 ft
8 ft
9 ft 26. Net force = mass x acceleration
A person applies a forward force of 40 N on a bicycle. The bicycle
experiences a backward resistive force
of 25 N. What is the net force if the total weight of the person and the
bicycle is 140 lb?
A.

14. B.
C.
D. 75N
25N
140N
15N 27. Electrical force = electrical constant x (charge1 x
charge2)/distance 2 Charge q and Q have an attractive force of 0.320 N.
What is the magnitude of the new force if their distance is quadrupled?
A.
B.
C.
D. 1.28 N
0.02 N
0.08 N
0.16 N 28. Electrical force = electrical constant x (charge1 x
charge2)/distance 2
A particle with a charge of q1 is placed 3 meters from a particle with
charge of q2.The particles are
moved to a distance of 12 meters apart.
What is the new charge that is needed on q1 so that the force between
the two particles remains the
same?

15. A.
B.
C.
D.
E. 144 q1
16 q1
36 q1
12 q1
9 q1 29. Why can a bird perch on an electrical power line without
experiencing a shock?
A.
B.
C.
D.
E. The voltage along the length of the wire is very low.
The potential difference across the bird's body is zero.
The resistance of the bird's body is very high.
The insulation on the wire protects the bird.
The current in the wire is grounded to the earth. 30. An emergency
flashlight is operated by a hand crank. After cranking the flashlight
several times and

16. pressing the switch, the flashlight shines brightly and then gradually gets
dimmer. What could this
flashlight use to store the energy produced from cranking it?
A.
B.
C.
D.
E. Fuses
Capacitors
Transformers
Resistors
Diodes 31. How do fuses and circuit breakers function to prevent a
circuit from overheating? A.
B.
C.
D.
E. They limit the total current that can flow within the circuit.
They raise the overall resistance of the circuit.
They lower the overall resistance of the circuit.
They limit the voltage to each branch of the circuit.

17. They limit the directions the current can flow within the circuit. 32. Why
are safety features such as fuses necessary in some circuits?
A. When circuits are wired in series, this can cause the electric potential
to increase to dangerous
levels as devices are added to the circuit.
B. When circuits are wired in series, this can cause the resistance to
increase to dangerous levels as
devices are added to the circuit.
C. When circuits are wired in parallel, this can cause the voltage to
increase to dangerous levels as
devices are added to the circuit.
D. When circuits are wired in parallel, this can cause the current to
increase to dangerous levels as
devices are added to the circuit. 33. Which action can increase the
attractive strength of a permanent bar magnet?
A.
B.
C.
D.
E. Stroking it with another magnet
Randomizing the domains within the magnet
Tapping it with a hammer
Placing it on a metal surface

18. Heating it to a high temperature 34. The writing head of a computer hard
drive uses current flowing through a small coil of wire to change
the direction of magnetic zones on the hard disk. What effect does the
current have on the hard disk?
A.
B.
C.
D.
E. The current creates a magnetic field.
The current causes interference.
The current allows for superconduction.
The current cancels an electric field.
The current destroys magnetic propulsion. 35. What causes the
alternating currents produced by standard generators? A. The coil rotates
so that the magnetic field passes through it in each direction for half the
time.
B. The generator coil rotates in one direction for half of the time and in
the other direction for the
other half of the time.
C. The total magnetic field produced by the generator magnet keeps
increasing and decreasing.
D. The generator coil is wound in alternating directions. 36. Two wires
suspended next to each other are connected to two separate batteries.
What will happen

19. to the wires if a steady current flows in the same direction in both wires?
A.
B.
C.
D.
E. The wires will act as a transformer.
The wires will experience a current increase.
The wires will exert a force on each other.
The wires will remain stationary.
The wires will move in the direction of the current. 37. A balloon
charged with static electricity hangs from the ceiling by a non
-conducting string. The
charges on the balloon have reached equilibrium. What is detectable in
the free space directly around
the balloon?
A.
B.
C.
D. A magnetic field
An alternating current
A direct current

20. An electric field 38. A child straps a bar magnet on top of a toy car so
that the north pole of the magnet is over the front
of the car and the south pole is over the back of the car. The child then
rolls the car down a straight
track. What is the direction of the electric field induced by the magnet if
the orientation of the magnet
remains unchanged throughout the trip?
A.
B.
C.
D.
E. Always in the opposite direction of the motion of the magnet
Always toward the center of the Earth
Always in the direction of the motion of the magnet
Always parallel to the direction of the magnet's magnetic field
Always perpendicular to the direction of the magnet's magnetic field 39.
Which change would increase the time it takes a simple pendulum to
swing back and forth? A.
B.
C.
D. Changing the size of the mass
Pulling it back farther

21. Moving it to the moon
Moving it downhill 40. How would a long pendulum behave differently
from a short pendulum?
A.
B.
C.
D.
E. It would have a longer period of oscillation.
It would better counteract the strong pull of gravity.
It would experience less torque due to the mass on the end of the
pendulum.
It would ensure the pendulum will swing with simple harmonic motion.
It would counteract the effects of Earth's magnetic field. 41. Which
wave characteristic should a surfer compare in order to find the tallest
wave to ride?
A.
B.
C.
D.
E. Speed
Period
Frequency

22. Wavelength
Amplitude 42. Which behavior is possible for light waves but not for
sound waves?
A.
B.
C.
D. Interference
Polarization
Reflection
Diffraction 43. A police car with its lights on and its sirens blaring
drives past a man sitting in a parked car. How does
the sound coming from the siren differ from the light the man sees on
the top of the car?
A.
B.
C.
D.
E. The sound requires air in order to travel but the light does not.
The sound is caused by vibrations but the light is not.
The sound spreads out spherically from its source but the light does not.
The sound experiences a Doppler shift but the light does not.

23. The sound reflects off surrounding objects but the light does not. 44.
Which single characteristic determines the color of a light wave? A.
B.
C.
D. Reflectivity of light
Refraction of light
Speed of light
Frequency of light 45. Which portion of the electromagnetic spectrum
do humans see?
A.
B.
C.
D. About half of the entire electromagnetic spectrum
About a quarter of the entire electromagnetic spectrum
Less than a tenth of the entire electromagnetic spectrum
More than three-quarters of the entire electromagnetic spectrum 46. A
motorcycle speedily approaches and then rapidly passes a student
standing still on the sidewalk.
The motorcycle's engine is blaring loudly, and the student notices the
sound frequency changes as it
approaches and recedes down the street. Which statement correctly
describes the perceived change in
frequency?

24. A. The perceived frequency of the engine is higher as it approaches the
student and is at an even
higher frequency when it passes and recedes.
B. The perceived frequency of the engine is the same when it approaches
the student as when it
passes and recedes.
C. The perceived frequency of the engine is higher when it approaches
the student than when it
passes and recedes.
D. The perceived frequency of the engine is lower when it approaches
the student than when it
passes and recedes. 47. The first law of thermodynamics states that heat
energy added to the system = increase in internal
energy + work done by the system. An automobile engine produces
8,000 J of energy to move the car
100 feet During this procedure, a specific portion of gasoline from the
tank is used. When burned in the
cylinders of the engine, that same portion of gas produces 32,000 J of
energy. What is each aspect of the
first law of thermodynamics, according to the terms of this case?
A. Heat energy added to the system = 32,000 J. Increase in internal
energy = 8,000 J. Work done by
the system = 24,000 J.

25. B. Heat energy added to the system = 32,000 J. Increase in internal
energy = 24,000 J. Work done
by the system = 8,000 J.
C. Heat energy added to the system = 8,000 J. Increase in internal
energy = -24,000 J. Work done by
the system = 32,000 J.
D. Heat energy added to the system = 24,000 J. Increase in internal
energy = 32,000 J. Work done
by the system = -8,000 J. 48. Change in internal energy = heat added to
system - work done by system
A person does 300 J of work on a system. The system heats the
surroundings by 300 J. What happens to
the internal energy of the system?
A.
B.
C.
D. It increases by 600 J.
It is unchanged.
It increases by 300 J.
It decreases by 600 J. 49. How is entropy affected if there is heat
exchange between a system and its environment?
A.
B.

26. C.
D. There will be no change in entropy.
The entropy will decrease.
The entropy will increase.
Entropy will reach its minimum value. 50. A student drags a study table
across the room. In doing this, the student changes the entropy of the
room. What effect does dragging the study table have on the entropy of
the room?
A. Entropy decreases as the frictional forces pull the table down. This
causes the student to do
extra work to move it around.
B. Entropy increases as the student does work against friction. This
produces heat; thus
transforming ordered energy into disordered energy.
C. Entropy increases as the frictional forces pull the table down. This
causes the student to do more
work to move it around.
D. Entropy decreases as the student does work against friction. This
produces heat; thus
transforming ordered energy into disordered energy. 51. Heat = mass x
specific heat x change in temperature.
A substance that weighs 450 grams experiences a rise in temperature
from 5°C to 55°C upon supplying

27. 495 calories of heat energy. What is the specific heat capacity of the
substance?
A.
B.
C.
D. 9.9 cal/g °C
0.022 cal/g °C
1.1 cal/g °C
0.15 cal/g °C 52. Heat = mass x specific heat x change in temperature.
14,152 J of heat is supplied to 200 grams of ethanol at 7°C. What is the
final temperature of ethanol if its
specific heat capacity is 2.44 J/g °C?
A.
B.
C.
D. 36°C
22°C
32°C
29°C 53. How are molecules affected when the temperature of a liquid is
decreased?
A.

28. B.
C.
D. Molecules of the liquid attain absolute zero.
Molecules of the liquid vibrate with more energy.
Molecules of the liquid stop vibrating.
Molecules of the liquid vibrate with less energy. 54. Change in internal
energy = heat added to system - work done by system
Enough heat is added to a system that it increases the internal energy by
50 J and causes the system to
do 500 J of external work. How much energy was added to the system?
A.
B.
C.
D. 350J
650J
550J
450J 55. Which observation indicates that light behaves as a particle?
A.
B.
C.
D. Both bulbs produce electrons at a similar rate.

29. The 100W bulb starts producing electrons sooner.
The 100W bulb produces electrons with higher energy.
Both bulbs produce electrons with similar energies. 56. Which behavior
of light demonstrates its particle -like nature?
A.
B.
C.
D. Photons passing through the output mirror in a final laser beam
Photons being absorbed and emitted from atoms in a laser cavity
Photons resonating between the two mirrors in a laser cavity
Photons traveling to neighboring atoms in a laser cavity 57. Why are
integrated circuits currently made from semiconductors and not other
materials?
A.
B.
C.
D.
E. Semiconductors have resistances that can be manipulated.
Semiconductors can process information stored magnetically.
Semiconductors behave the same at all temperatures.
Semiconductors require the least amount of energy to operate.

30. Semiconductors are the most numerous elements. 58. A chemist
measures the volume of a solution by pouring it into a beaker with
markings that are
accurate to 0.1 mL. Why can the effects of the uncertainty principle be
ignored in this measurement?
A.
B.
C.
D.
E. The system is not on the atomic scale.
Uncertainty only affects position measurements.
The system contains no uncertainty.
Physical interaction with the system is limited.
Only one quantity is being measured at a time. 59. A charge of 5 C is
moved inside an electric field until it possesses an electric potential
energy of 150 J.
Which voltage is generated during this process?
A.
B.
C.
D.
E. 150V

31. 100
30V
75V
15 V 60. A glass rod is rubbed with a cloth until it reaches a voltage of
3000 V. A student touches the rod to
discharge it. Why does the student experience only a slight spark?
A.
B.
C.
D.
E. The rod's electric potential energy per unit charge is very low.
The rod's electric potential energy is equal to its voltage.
The rod has a very low electric potential.
The rod has very little total charge.
The rod's electric potential energy is very high. 61. Electric potential =
electric potential energy /charge A positive charge of magnitude q is a
distance d from a large positive central charge. Another positive
charge of magnitude 2q is the same distance don the other side of the
central charge. Neglect the
interactions between the test charges in order to answer the following
question. What is the relationship
between the electric potentials of the two charges?

32. A.
B.
C.
D. The electric potential of positive charge q is larger than that of 2q.
The electric potential of positive charge 2q is larger than that of q.
The electric potentials of the two particles are both zero.
The electric potential of the two particles is the same. 62. A science fair
contestant is constructing a simple motor. However, when the contestant
switches on
the current, the wire loop only makes half of a revolution and then stops.
Why did this happen?
A.
B.
C.
D.
E. The current in the experiment did not switch direction.
The magnet in the experiment is not strong enough.
The wire loop is not aligned properly with the magnetic field.
The wire loop is not made of a magnetic material.
The current in the experiment is not strong enough. 63. A science fair
contestant is constructing a simple motor. However, when the contestant
switches on

33. the current, the wire loop only makes half of a revolution and then stops.
Why did this happen?
A.
B.
C.
D. The current in the experiment did n...
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