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1. Which of the Following is true about Magnetic Poles?
A) The northern magnetic pole attracts the southern magnetic pole
B) The southern magnetic pole attracts the southern geographic pole
C) The northern magnetic pole is stronger than the southern magnetic pole
D) The southern magnetic pole is stronger than the northern magnetic pole
2. For an object to be magnetized,
A) The particles must be attracted to another magnetic object
B) The magnetic domains are aligned
C) Made of metal
D) Attracted to the Northern or southern poles.
3. An electromagnet differs from a plain solenoid because
A) It has more coils than a plain solenoid
B) It uses more magnetism than a plain solenoid
C) It causes a larger magnetic field
D) It has a ferromagnetic core
4. The changing of a current in an electromagnet controls
A) The speed and velocity of its magnetic field
B) The force and acceleration of the magnetic field
C) The mass the magnetic field
D) The strength and direction of the magnetic field
5. What ratio of turns does a step up transformer do?
A) 200:50 B) 300:200 C) 50:100 D) 50:150
6. Which conducts heat the fastest:
a) solids b) Liquids c) gases d) fluids
7. A heating device releases air through vents into a room. What process allows the room to maintain a constant air temperature?
a) radiation b) convection c) conduction d) having a lot of vents in the room
8. In order for thermal energy to flow from colder objects to hotter objects, work must be done on the system. Which law of thermodynamics is this?
a) first b) second c) third d) fourth
9. What type of engine is found in trucks?
a) external b) internal c) internal with diesel fuel d) external with diesel fuel
10. Most heating systems use ______ to distribute thermal energies
a) convection b) conduction c) radiation d) diffusion
11. A __________ wave causes the medium it passes through to vibrate parallel to the wave. A ______ wave causes the medium to vibrate
perpendicular to the wave.
A. Longitudinal, transverse
B. Compression, Rarefaction
C. Transverse, Longitudinal
D. Surface, P-waves
12. The relationship between wavelength and frequency can be described as...
A. They are equal
B. Wavelength is always twice the frequency
C. Wavelength is inversely proportional to frequency
D. They are unrelated
13. When a wave enters a new medium why does refraction occur?
A. Both sides are changing speed at the same time
B. One side of the wave is moving more slowly than the other
C. The wave is flipped upside down
D. The wave bounces back
14. According to the Doppler Effect….
A. as the source of a sound approaches you hear a higher frequency and as the source moves away you hear a lower frequency
B. As the source of the sound approaches you hear a lower frequency and as the source moves away you hear a higher frequency
C. As the source of the sound approaches it is louder and as it moves away it gets softer
D. The faster the source of the sound is moving, the higher the pitch
15 The middle ear receives and amplifies vibrations. What are the bones which allow this to happen?
A. Hammer, anvil, cochlea
B. Hammer, anvil, femur
C. Stirrup, phalanges, cochlea
D. Hammer, anvil, stirrup
16. In vector addition, vectors going in different directions are: (a) added (b) multiplied (c) cannot be added (d) subtract from one another
17. A resultant vector shows: (a) displacement (b) vector addition (c) total distance (d) magnitude
18. A change in velocity could result in a change of : (a) speed (b) distance
(c) speed and/or direction (d) all of the above
19. Riding on a carousel is an example of: (a) change in speed (b)acceleration (c) free fall (d) instantaneous speed
20. If a motion is in a straight line, velocity can be treated as: (a)acceleration (b) energy loss (c) velocity vector (d) speed
1. Which is not a type of machine?
a. lever
b. wheel and axle
c. fulcrum
d. screw
21. The ideal mechanical advantage can be calculated by
a. dividing the effort force by resistance force
b. dividing the effort distance by resistance distance
c. dividing the resistance force by effort force
d. none of above
22. In a second class lever,
a. a fulcrum is located in the middle
b. the mechanical advantage is always less than 1
c. The input is located between the output and fulcrum
d. the output is located between the input and fulcrum
23. What is not true about the wheel and axle?
a. its IMA can be calculated by dividing the radius where input force
b. its IMA is always less than 1
c. the outer part is called wheel
d. the two different disks have two different radii.
24. Work depends on
a. distance and time
b. force and distance
c. numbers and force
d. none of above
25. A force is
I. a push or pull
II. a change in friction
III. a change in speed
IV. a change in direction
V. a type of work
a. I, III, V
b. II, III, IV
c. I, III, IV
d. I, IV, V
26. The law of inertia states that
a. an unbalanced force is needed to change motion
b. static friction is greater than sliding friction
c. an object at rest remains at rest, or an object in motion remains at constant motion unless acted upon by a net force.
d. The acceleration of an object is equal to the net force acting on it divided by the object's mass.
27. Which of the following is NOT a force?
a. gravity
b. momentum
c. friction
d. electromagnet
28. An object is being pulled left with a force of 6N. The upward force is 2N. The wieght of the object is 2N. What is the net force acting on the
object?
a. 2N upwards
b. 2N left
c. 6N in all directions
d. No net force
29. Pushing an object until it starts to slide across the floor demonstrates
a. sliding friction
b. rolling friction and static friction
c. sliding friction and static friction
d. sliding friction and rolling friction
30. ______is the direction from the starting point and the length of a straight line from the starting point to the end point, whereas, _______ is the
length of a path between two points.
A. resultant vector, distance
B. distance, displacement
C. displacement, distance
D. combining displacement, vector
31. When a rock is drop from a cliff and free falls into a river below, the speed is fastest at which point?
A. the start
B. half way through
C. right before it hits
D. exactly two seconds into the fall
32. While taking a car ride you measured the times that you traveled in the car, and also the distance during that time. You traveled 49 kilometers in 1
hour, then 21 kilometers in .2 hours, and finally 78 kilometers in 1.6 hours. What was your average speed for the car ride?
A. 43.72 km/h
B. 92.5 km/h
C. 202.75 km/h
D. 58.86 km/h
33. Acceleration can be described as change in ______, _______, or ______.
A. speed, direction, both
B. speed, velocity, displacement
C. direction, velocity, both
D. distance, speed, direction
34. If a bowling ball is rolled down a bowling lane, starting from rest. After 4 seconds, its velocity is 5.4 meters per second, and then after 5 seconds,
just before it hits the pins, it is 7 meters per second. What is the acceleration of the bowling ball right before it hit the pins?
A. 1 m/s2
B. 1.4m/s2
C. 1.35 m/s2
D. 2.75 m/s2
35. Which of the following factors determine fluid pressure in a nonmoving fluid?
a. depth
b. shape of the container
c. type of fluid
d. (a) and (b)
e. (a) and (c)
f. none of the above
36. Water pressure _______ as depth increases.
a. decreases
b. increases
c. stays the same
d. fluctuates wildly
37. Which principle provides the basis for how hydraulic systems work?
a. Pascal’s Principle
b. Bernoulli’s Principle
c. Archimedes Principle
38. According to Archimedes’ principle, the buoyant force of an object equals _________
a. volume of fluid displaced
b. weight of fluid displaced
c. mass of fluid displaced
d. all of the above
39. What causes buoyant force/ explains it?
a. Pascal’s principle
b. Bernoulli’s principle
c. Archimedes’ principle
d. varying levels of pressure in a flu
40. As ________ increases, pressure decreases. (B)
a. Force
b. Area
c. Weight
d. Mass
41. ______ is a compressible fluid. (C)
a. Water
b. Liquid mercury
c. Air
d. All fluids are compressible (C)
42. Buoyancy is dependent on the principals that state
I. The pressure at a given depth is equally exerted in all directions
II. Pressure = Force / Area
III. Water pressure increases with depth
IV. Pascal’s Principal
a. I only
b. II and III
c. I and III
d. All of the Above
43. Hydraulic systems increase ________ and decrease ________. (A)
a. Force, Distance
b. Pressure, resistance
c. Distance, pressure
d. None of the Above
44. The reason objects float more easily in denser fluids can be explained by: (B)
a. Bernoulli’s Principal
b. Archimedes’ Principal
c. Newton’s Principal
d. Pascal’s Principal
45. In a transverse wave, which way are the particles moving relative to the energy movement?
[a] perpendicular
[b] the same direction
[c] do not move at all
[d] in crazy circles
46. Which of the following characteristics are not found in longitudinal waves?
[a] compressions
[b] troughs
[c] rarefractions
[d] crazy circles
47. On a Thursday, a wave has an amplitude of 1 cm and a frequency of 2 Hz. The wavelength is 3 cm. What is the period?
[a] 2
[b] .5
[c] 4
[d] 3
48. Which of the following is not a mechanical wave?
[a] transverse wave
[b] longitudinal wave
[c] surface wave
[d] electromagnetic wave
49. Which of the following does not effect the pitch of a sound wave?
[a] the amplitude
[b] the wavelength
[c] the source’s motion
[d] the frequency
50. Newton’s second law of motion involves:
A. force
B. force and mass
C. mass
D. force, mass, and acceleration
51. Newton’s first law of motion is also known as:
A. gravity
B. air resistance
C. inertia
D. projectile motion
52. A plant stays situated on a table due to:
A. sliding friction
B. static friction
C. fluid friction
D. rolling friction
53. Terminal Velocity is reached when:
A. force of air resistance is equal to force of gravity
B. force of air resistance is more than force of gravity
C. force of air resistance is less than force of gravity
D. force of air resistance and force of gravity equal to zero
54. Weight is:
A. Mass in g times acceleration due to buoyant force in m/s2
B. Mass in kg times acceleration due to gravitational force in m/s2
C. Volume in cm3 times acceleration due to buoyant force in m/s2
D. Volume in m3 times acceleration due to gravitational force in m/s2
55. Which list of six items contains only simple machines?
a. Lever, Pulley, Wheel and Axel, Incline Plane, Hammer and Wedge
b. Lever, Pulley, Wheel and Axel, Watch, Wedge, and Screw
c. Lever, Pulley, Fulcrum, Wheel and Axel, Wedge, and Screw
d. none of these
56. Which simple machine always has an ideal mechanical average less than one?
a. First class lever
b. Second Class Lever
c. Third Class Lever
d. 1 x 1 pulley system
57. The output work of a simple machine is always less than the input force because of
a. friction
b. the output distance
c. the weight of the object being worked on
d. gravity
58. A machine can :
a. change the size of the force needed
b. change the direction of the force
c. change the distance over which a force acts
d. all of these
59. Who provided evidence for the wave model?
a. Isaac Newton
b. Albert Einstein
c. Thomas Young
d. Albert Michelson
e. William Herschel
60. What are Amplitude and Frequency modulations used for?
a. X-ray’s
b. Radio broadcasting
c. Computer encryption
d. Hearing aids
61. Which of the following is not a primary light or primary pigment?
a. red
b. orange
c. cyan
d. magenta
62. Fluorescent light bulbs are filled with…
a. nothing, it is a vacuum
b. nitrogen
c. mercury
d. argon
63. A white object…
a. reflects white light
b. emmits white light
c. reflects all light
d. reflects no light
e. none of the above
64. Thermal energy depends on the ______, ________, and ________ of an object.
A. Mass, temperature, and volume.
B. Phase, volume and mass.
C. Volume, phase, and temperature.
D. Mass, temperature, and phase.
65. An iron skillet has a mass of 676 grams. The specific heat of iron is 0.449 j/g*Celsius. How much heat must be absorbed to raise the skillet’s
temperature by 177 Celsius degrees?
A. 53.726 kJ
B. 73.5 kJ
C. 53,723 kJ
D. 44 kJ
66. What are the four different strokes in order of the internal combustion engine of a car?
A. Power stroke – Compression Stroke – Intake Stroke – Exhaust Stroke
B. Exhaust Stroke – Power Stroke – Intake Stroke – Compression Stroke
C. Intake Stroke – Compression Stroke – Power Stroke – Exhaust Stroke.
D. Intake Stroke – Power Stroke – Compression Stroke – Exhaust Stroke
67. Stroke – Power Stroke – Exhaust Stroke.
68. Conduction in gases is _______ than in liquids and solids because the particles in a gas ______ less often.
A. slower; mix
B. faster; mix
C. slower; collide
D. faster; collide
69. What do most heating systems use to distribute thermal energy?
A. Conduction
B. Convection
C. Radiation
D. Heat
70. Work is calculated by a) Work = Force x Distance b) Work = Force x Time c) Work = Force x Speed d) Work = Speed / Force
71. What is one horsepower (hp) equal to? a) 600 watts b) 745 joules c) 746 watts d) 1700 joules
72. Mechanical advantage is the ___ a) number of times the machine increases an input force b) the number of times the machine does work c)
the amount of water produced d) the amount of power in the machine
73. What class lever always has a mechanical advantage of less than 1? a) First Class b) Second Class c) Third Class d) Fourth Class
74. What is the function of a fixed pulley? a) Increase the force b) Decrease the force c) Change the direction of force e) all of the above
75) If you want to increase power, you can
a. do more work in a given time
b. do less work in a given time
c. do the work in less time
d. a and c
76) The mechanical advantage of a pulley system depends on
a. number of fixed pulleys
b. number of movable pulleys
c. number of total ropes supporting the load being lifted
d. length of the ropes pulling the load
77) Because of friction
a. the mechanical advantage of all machines will be less than 1
b. the efficiency of all machines will be less than 1
c. the IMA will never be reached
d. a and c
78) Using the formula for power, how could you calculate work?
a. Power/time
b. Power + time
c. Power multiplied by time
d. Time/power
79) Which is not a simple machine?
a. wheel & axle
b. screw
c. ramp
d. flashlight
80. Which of the following is not a way that machines make work easier? A. Changing the force needed B. Changing the mass of the object that the
work is being done on C. Changing the direction of the force D. Changing the distance over which the force acts
81. The efficiency of any machine is always less than 100 percent because of A. power B. momentum C. horsepower D. friction
82. Doing work faster requires A. a larger difference between ideal mechanical advantage (IMA) and actual mechanical advantage (AMA) B. a
smaller difference between ideal mechanical advantage (IMA) and actual mechanical advantage (AMA) C. more power D. less power
83. A wedge is a V-shaped object whose sides are two A. inclined planes sloped away from each other B. inclined planes sloped toward each other C.
screws sloped away from each other D. screws sloped toward each other
84. If the ideal mechanical advantage (IMA) of something remains constant while the output distance of the same thing is increased, then the input
force A. would not be affected B. would decrease C. would increase, as well D. could do any of the three things mentioned above (unknown)
85. What is Archemides principle?
a. The weight of a fluid is equal to the force of gravity times the fluid's mass.
b. Pressure increases with depth.
c. The bouyant force exerted an object is equal to the weight of the fluid displaced by the object.
d. They bouyant force is the net downward force.
86. How does a steel ship float in water?
a. The bouyant force is larger than the ship's weight
b. The bouyant force is equal to the ship's weight
c. The bouyant force is zero
d. Steel is more dense than water
87. If, in a hydraulic system, the pressure in the small piston is 4 Pascals the pressure in the large piston is ______
a. 4 Pascals
b. Less than 4 Pascals
c. More than 4 Pascals
d. None of the above
88. If the pressure on a object is 5 Pa and the force exerted on it is 10N then the object's area is
a. 1/2cm^2
b. 2cm^2
c. 50cm^2
d. 1/2cm^3
89. Lift in an airplane is caused by
a. differences in air pressure and Bernoulli's principle
b. air below the airplane wing moving faster than air above the wing
-
c. air below the airplane wing moving at the same rate as air above the airplane
d. greater pressure on the top of the wing
90. What is the combination of a forward velocity and a downward vertical force of gravity that causes the ball to follow a curved path?
force b. gravity of a falling object
c. projectile motion d. static friction
91. What is the tendency of an object to resist a change in its motion?
a. acceleration b. inertia
c. newton’s law d. terminal speed
92. According to Newton’s second law, the acceleration of an object is equal to the
acting on it divided by the object’s
.
a. net force, mass
b. friction, speed
c. inertia, gravity
d. net force, inertia
93. The mass of an object times the acceleration due to gravity results in a. force b. friction c. speed d. weight
94. The four universal forces are electromagnetic force, strong nuclear force, weak nuclear force, and
a. thermal energy
b. momentum
c. gravitational force d. velocity
95. When two waves interfere, the displacement where two troughs meet is a. negative b. a crest c. positive
d. zero
96. What is the frequency if the wavelength is .25 m and the speed is .75 m/s a. 0.3 Hz b. 0.1875 Hz
c. 0.333 Hz d. 3 Hz
96. What is the bending of a wave as it enters a new medium at an angle?
a. rarefaction b. diffraction
c. constructive interference
d. destructive interference
97. In a longitudinal wave, the medium vibrates
a. at right angles to the direction in which the wave travels
b. at a 45o angle to the wave direction
c. parallel to the direction the wave travels
d. in the same direction as the wave
98. According to the Doppler effect
a. As a source of sound approaches, an observer hears a lower frequency
b. As a source of sound moves away, an observer hears a higher frequency
c. As source of sound approaches, an observer hears the same frequency
d. As source of sound approaches, an observer hears a higher frequency
99. A vector is a quantity that has both
a) direction and speed
b) direction and magnitude
c) direction and velocity
d) direction and distance
100. The SI unit of speed is
a) km/h b) m/h c) m/s d) km/s
101. To find the average speed, you divide
a) distance by time
b) time by distance
a. net
c) time by velocity
d) distance by velocity
102. Acceleration can be described as
a) changes in speed
b) changes in direction
c) changes in distance
d) both a and b
103. The slope of a speed-time graph is
a) distance
b) velocity
c) acceleration
d) none of the above
104. What is force measured in ?
a. meters
b. joules
c. newtons
d. grams
105. The combination of an initial forward velocity and the ________ force of gravity causes a ball to follow a curved path.
a. horizontal
b. vertical
c. none of these
d. both a and b
106. Newton's second law states that...
a. every action as an equal but opposite reaction
b.an object at rest will remain at rest unless acted upon
c. a= F/m d. W= mg
107. Momentum depends on these two factors:
a. weight and inertia
b. velocity and mass
c. gravity and air resistance
d. none of these
108. Which two forces are the only forces that can both attract and repel ?
a. gravity, electric
b. air resistance and inertia
c. electric and magnetic
d. both a and c
109. What is the symbol for charge?
a. Q b. C c. V d. I
110. What is the outer shell of a battery usually made out of?
a. Aluminum b. Zinc c. Tin d. Graphite
111. What does the V stand for in V=IR
a. Current b. Ohm c. Watt d. Voltage
112. What is a switch that opens when a current in a circuit is too high?
a. Fuse b. Circuit Breaker c. Wiring
d. Grounding
113. What current only flows in one direction?
a. DC b. AC c. GFCI d. CRT
114. What would the iris in the eye act as in the microscope?
a) the ocular b) the diaphragm c) the eyepiece d) high-power objective e) low-power objective
115. When does total internal reflection occur?
a) it never occurs b) only occurs in a vacuum c) when the incident angle requires more than 90 degrees refraction d) when the incident angle requires
less than 90 degrees refraction e) it occurs from 8 AM to 3 PM at home so students don't really get to see it
116. Why does your image become blurry as you keep walking towards a concave mirror?
a) your body heat distorts the mirror's function b) even the smallest gravitational attraction between you and the mirror distorts the clarity of the
image c) there is no image before and after you walk towards it d) because the object is at the focal point, causing parallel rays e) the vibration you
cause as you walk shakes the mirror
116. What images do concave lenses form?
a) black-and-white images b) disproportional images c) real images d) real or virtual images 117. You have a convex lens that has a focal pt located
16 cm from the lens. A candle is located 45 cm from the lens. How far away is the image?
a) the answer cannot be found without experimentation b) 61 cm c) 29 cm d)0.248 m e) 2.81 cm
118. What happens when two negatively charged balloons are brought close together?
a. They attract
b. They repel
c. The charge doubles
d. They are neutral
119. Which one is a good insulator?
a. silver
b. gold
c. air
d. copper
120. In V = I x R, what do V, I, and R stand for?
a. voltage; current; resistance
b. velocity; amps; resistance
c. speed; current; charge
d. voltage; intensity; radius
121.What prevents a current overload in a circuit?
a. fuse
b. GFCI
c. plug
d. transistor
122. When one element in a parallel circuit stops functioning, what happens?
a. Everything stops working
b. The energy transfers
c. The other elements can still work
d. Nothing happens
123. what can you do to destroy the attraction in magnet?
a) freeze it
b) scratch it
c) put it in the water
d) burn it
124. What happens to domain whem material is magnetized?
a) all domain disappears
b) domian all face one direction, making it stronger.
c) all domain cancels out
d) domain gets all seperated
125. How do you make a wire increase in strength (magnetic strength)?
a) coil it
b) burn it
c) break it
d) stretch it
126. Electrons spin and gives magnetic field. However, what is the main reason that we do not really consider the electrons as a magnetic field?
a) because they are too small to see
b) because they do not meet
c) because they cancel out
d) none of the above
127. In which direction does magnetic field flow in a magnetic bar?
a) East to West
b) West to East
c) South to North
d) North to South
128. The unit of pressure is
a. Watt.
b. Newton.
c. Pascal.
d. Meter^2/Newton.
129. What is FALSE about hydraulic systems?
a. Applies Pascal’s Principle.
b. Uses pistons of the same size to change force.
c. Involves a pressurized fluid.
d. Is used in many machines, such as trucks.
130. What is true about lift?
a. Used in airplanes.
b. Applies Bernoulli’s Principle.
c. Is an upward force.
d. All of the above.
131. Buoyancy
a. Results in the apparent mass loss of an object.
b. Results in the apparent mass gain of an object.
c. Results in the apparent weight gain of an object.
d. Results in the apparent weight loss of an object.
132. If a cube of wood, in water, has a density of .75g/cm^3 how much of the cube is sticking out of the water?
a. 1.9 cm^3
b. 2.5 cm^3
c. 75 cm^3
d. 1.25 cm^3
133. Relative motion is motion in relation to:
a) the amount of distance traveled
b) a target object
c) a frame of reference
d) the ground
134. Which of the following are true about average speed?
a) it is calculated to obtain an instantaneous speed
b) it is calculated for the entire duration of a trip
c) it is a vector
d) its SI unit is (m/s)^2
135. The slope of a line on a distance/time graph is:
a) speed
b) velocity
c) amount of displacement
d) instantaneous acceleration
136. The slope of a line on a speed/time graph is:
a) acceleration
b) amount of displacement
c) velocity
d) instantaneous speed
137. If a ship is traveling perpendicular to a river flow at 19 kilometers per hour and the river is flowing at 7 miles per hour what is the velocity of the
boat relative to the river bank in miles per hour?
a) 64
b) square root of 410
c) 26
d) 133