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Physical Science Comprehensive Spring 2011 Test
Multiple Choice
Identify the choice that best completes the statement or answers the question.
1. Nanotechnology is based on a unit of measurement called a nanometer, which is what fraction of a meter?
|A. |one hundredth |
|B. |one thousandth |
|C. |one millionth |
|D. |one billionth |
|E. |one trillionth |
2. What describes how close together repeated measurements or events are to one another?
|A. |accuracy |
|B. |precision |
|C. |resolution |
|D. |reproducibility |
|E. |closeness |
3. Which of the following is NOT a unit of measurement in the metric system?
|A. |Meter |
|B. |Second |
|C. |Centimeter |
|D. |Foot |
4. The conversion factor for changing one unit of length to another in the metric system is a multiple of:
|A. |3. |
|B. |10. |
|C. |12. |
|D. |5,280. |
5. How many seconds are in 3 days?
|A. |72 seconds |
|B. |4,320 seconds |
|C. |259,200 seconds |
|D. |86,400 seconds |
6. What is the value of a conversion factor ratio?
|A. |1 |
|B. |3 |
|C. |10 |
|D. |12 |
7. When you convert a measurement from SI to English, what changes?
|A. |Units |
|B. |Values |
|C. |Error |
|D. |Resolution |
8. What are the meaningful digits called in a measurement?
|A. |Precision |
|B. |Uncertainty |
|C. |Significant digits |
|D. |Accuracy |
[pic]
Figure 1-1A
9. What is the volume of liquid in the graduated cylinder shown in Figure 1-1A?
|A. |8 mL |
|B. |18 mL |
|C. |18.5 mL |
|D. |19 mL |
10. Which measurement has 4 significant digits?
|A. |0.04349 |
|B. |43.490 km |
|C. |434.90 km |
|D. |4349.0 km |
[pic]
Mt. Elbert is the highest peak in the Colorado Rocky Mountains. Its elevation is listed at 14,433 feet.
Figure 1-3A
11. How many significant digits are in the measurement 14,433 feet?
|A. |3 |
|B. |4 |
|C. |5 |
|D. |6 |
12. A meniscus:
|A. |is formed when a liquid is in a tube. |
|B. |makes volume measurements impossible. |
|C. |always curves downward. |
|D. |All of the above |
13. The amount of matter in an object is called its:
|A. |volume. |
|B. |gram. |
|C. |weight. |
|D. |mass. |
14. Mass is measured in units of:
|A. |inches and feet. |
|B. |pounds and ounces. |
|C. |kilograms and grams. |
|D. |cubic centimeters. |
15. The space that an object takes up is known as its:
|A. |density. |
|B. |volume. |
|C. |weight. |
|D. |mass. |
16. Which is true of a kilogram of feathers and a kilogram of bricks?
|A. |They have the same mass. |
|B. |They have the same volume. |
|C. |The bricks are less dense. |
|D. |The feathers are more dense. |
17. A plastic toy with a mass of 18 grams occupies 9.0 cm3 of space. Its density is:
|A. |0.3 g/cm3 |
|B. |1.5 g/cm3 |
|C. |2.0 g/cm3 |
|D. |6.0 g/cm3 |
18. A graduated cylinder contains 30 mL of water. You place an object into the cylinder and the water level rises to 52 mL. What is the volume of the object?
|A. |22 mL |
|B. |30 mL |
|C. |52 mL |
|D. |82 mL |
19. Which of the following is the same measurement as 500 grams of water?
|A. |0.5 liters of water |
|B. |5 liters of water |
|C. |5 kilograms of water |
|D. |5 milliliters of water |
20. By adding more copper to an copper block, you:
|A. |increase its density. |
|B. |decrease its density. |
|C. |decrease its mass. |
|D. |do not change its density. |
21. How does the density of a pure silver teapot compare to a pure silver bracelet?
|A. |It is higher. |
|B. |It is lower |
|C. |It is the same. |
|D. |You can’t tell without the numbers. |
22.
|Material |Density |
|Wood |0.9 g/cm3 |
|Glass |2.3 g/cm3 |
|Aluminum |2.7 g/cm3 |
|Iron |7.8 g/cm3 |
A block has a mass of 23 grams and a volume of 10 cm3. Using the table above, what material is the block made of?
|A. |Wood |
|B. |Glass |
|C. |Aluminum |
|D. |Iron |
23. A scientific hypothesis:
|A. |is one that can be tested. |
|B. |is a prediction of the outcome of an experiment. |
|C. |may be modified as new evidence becomes available. |
|D. |is sometimes referred to as an educated guess. |
|E. |may be described by all of the above. |
24. Natural laws are:
|A. |rules that explain how all things in the entire universe always behave. |
|B. |a process of discovering the answers to questions. |
|C. |a preliminary explanation. |
|D. |a form of inquiry. |
|E. |laws that mother nature is the judge. |
25. A scientific explanation supported by much evidence collected over a long period of time is a(n):
|A. |hypothesis. |
|B. |deduction. |
|C. |theory. |
|D. |law. |
|E. |expectation. |
26. In order for evidence to be considered scientific evidence, it must be:
|A. |the opinion of an important scientist. |
|B. |objective and repeatable. |
|C. |deduced by a detective. |
|D. |found in a textbook. |
|E. |testable |
27. Once a scientific theory has been accepted:
|A. |its evidence does not need to be repeated. |
|B. |it continues to be tested against new evidence. |
|C. |it can never be changed or revised. |
|D. |it is considered to always be true. |
|E. |a cash prize of 1 million dollars is given to the person that had the original theory. |
28. A control variable is:
|A. |a variable that stays the same throughout an experiment. |
|B. |a variable that is changed in an experiment. |
|C. |the largest, most powerful variable in an experiment. |
|D. |rarely used in scientific experiments. |
|E. |a variable that has control over the other variables. |
29. The application of science to meet human needs and solve problems is called:
|A. |science. |
|B. |engineer. |
|C. |technology. |
|D. |experiment. |
|E. |appliscihunesoprobs. |
30. Why are prototypes developed by engineers?
|A. |To test a design and see if it works |
|B. |To create a conceptual design |
|C. |To publish in a scientific journal |
|D. |To learn the basic principles of how things work |
|E. |To see if it can go professional instead of maintaining amateur status. |
31. How can scientists reduce the bias in their experiments?
|A. |By being truthful in reporting their results |
|B. |By reporting only the results that support their conclusions |
|C. |By getting their results on the news |
|D. |By getting peers to join their side |
|E. |All of the above |
32. Ethics can be defined as
|A. |can be standards of conduct that enable a person to determine what behavior is right in a given situation. |
|B. |can be standards of conduct that enable a person to determine what behavior is wrong in a given situation. |
|C. |must be considered because of the potential help to human population |
|D. |must be considered because of the potential harm to human population |
|E. |All of the above |
33. Which of the following statements gives the best definition of position?
|A. |It is a variable that gives location relative to an origin. |
|B. |It is the distance with a value of zero. |
|C. |It is the distance an object travels divided by the time it takes. |
|D. |It is the distance traveled. |
|E. |It is a title, such as Mr, Mrs, or even Dr. |
34. On a graph, all of the following directions are normally considered to be positive EXCEPT:
|A. |North. |
|B. |East. |
|C. |Left. |
|D. |Up. |
|E. |Right. |
35. Speed is:
|A. |calculated by dividing the distance traveled by the time taken. |
|B. |zero for objects at rest. |
|C. |a measure of how quickly an object gets from one place to another. |
|D. |can have a negative value. |
|E. |All of the above |
36. Speed that does not change is called:
|A. |average speed. |
|B. |constant speed. |
|C. |instant speed. |
|D. |minimum speed. |
|E. |instantaneous speed. |
37. In 1/2 hour, a bicyclist traveled 20 kilometers. What was the bicyclist’s average speed?
|A. |60 km |
|B. |10 km/hr |
|C. |40 km |
|D. |40 km/hr |
|E. |20 km/hr |
38. From home, you walk 6 blocks east and then walk 4 blocks west. Your position traveled is:
|A. |2 blocks. |
|B. |4 blocks. |
|C. |6 blocks. |
|D. |10 blocks. |
|E. |1.5 blocks. |
39. If the average speed of a drag racing car is 0.069 miles per second, how long would it take the car to complete a 1/4 mile (0.25 mile) straight track?
|A. |0.020 seconds |
|B. |0.17 seconds |
|C. |0.28 seconds |
|D. |3.6 seconds |
|E. |3.5 hours |
40. If an automobile travels at 30. m/s for 2.0 minutes, how far has the car traveled?
|A. |15 m |
|B. |60. m |
|C. |1,800 m |
|D. |3,600 m |
|E. |216,000 m |
41. The type of relationship represented between variables in the graph pictured is:
[pic]
|A. |a strong relationship. |
|B. |a weak relationship. |
|C. |an inverse relationship. |
|D. |no relationship. |
|E. |an indirect relationship |
42. On this graph, the independent variable is:
[pic]
|A. |distance. |
|B. |speed. |
|C. |acceleration. |
|D. |the slope of the speed vs. distance curve. |
|E. |meters per second |
43. When constructing a graph, the x-axis is most closely related to:
|A. |the dependent variable. |
|B. |the vertical axis. |
|C. |the independent variable. |
|D. |the slope. |
|E. |the z-axis. |
44. If large changes in the independent variable cause small changes in the dependent variable:
|A. |the relationship is strong. |
|B. |the relationship is inverse. |
|C. |the relationship is weak. |
|D. |there is no relationship between variables. |
|E. |there is an inverse relationship. |
45. Use the graph to predict the speed of the car when the car is at 60 cm.
[pic]
|A. |220 cm/s |
|B. |230 cm/s |
|C. |240 cm/s |
|D. |250 cm/s |
|E. |260 cm/s |
46. The metric unit of force preferred by scientists is the:
|A. |kilogram. |
|B. |newton. |
|C. |mima. |
|D. |pound. |
|E. |cm/s |
47. Weight is a force that depends on mass and:
|A. |friction. |
|B. |gravity. |
|C. |magnetism. |
|D. |energy conservation. |
|E. |acceleration. |
48. Which of the following diagrams shows the force vector -2 N?
[pic]
|A. |A |
|B. |B |
|C. |C |
|D. |D |
|E. |A and B are correct. |
49. Compared to your weight and mass on Earth, if you were on the moon:
|A. |your weight and mass would be less. |
|B. |your weight would be less but your mass would remain the same. |
|C. |your weight would remain the same, but your mass would be less. |
|D. |your weight would increase, but your mass would remain the same. |
50. A force that resists the motion of an object moving across a surface is called:
|A. |static friction. |
|B. |sliding friction. |
|C. |rolling friction. |
|D. |air friction. |
51. Ball bearings decrease friction in rotating motion because:
|A. |they are made of hard steel. |
|B. |they replace sliding friction with rolling friction. |
|C. |they separate surfaces with a cushion of air. |
|D. |they can be made in all sizes to fit different machines. |
52. [pic]
Which free-body diagram shows an object that will accelerate?
|A. |Diagram A |
|B. |Diagram B |
|C. |Diagram C |
|D. |Diagram D |
53. Which of the following is an object in equilibrium?
|A. |A box resting on a table without moving |
|B. |A box being pushed from rest to a speed of 5 cm/s |
|C. |A box falling freely in the air with no strings attached |
|D. |A box thrown up into the air |
54. If the net force on a moving object is zero:
|A. |the object will slow down and stop. |
|B. |the object will change direction. |
|C. |the object will change speed. |
|D. |the object will not change direction or speed. |
55. The inertia of an object is related to its:
|A. |mass and speed. |
|B. |mass and force. |
|C. |mass only. |
|D. |speed only. |
56. The property of matter that resists changes in motion is:
|A. |acceleration. |
|B. |inertia. |
|C. |force. |
|D. |speed. |
57. As the mass of an object is increased, what happens to its inertia?
|A. |It increases |
|B. |It decreases |
|C. |It stays the same |
|D. |Inertia and mass are not related in any way |
58. An object moving with constant speed has:
|A. |a net force greater than zero. |
|B. |a net force equal to zero. |
|C. |a net force less than zero. |
|D. |a constant net force. |
59. An object at rest has:
|A. |both inertia and momentum. |
|B. |neither inertia nor momentum. |
|C. |momentum but no inertia. |
|D. |inertia but no momentum. |
60. A tow truck pulls a 2,000-kg car with a net force of 4,000 N. What is the acceleration of the car?
|A. |0.5 m/s2 |
|B. |2 m/s2 |
|C. |200 m/s2 |
|D. |2,000 m/s2 |
61. A 200-kg rocket accelerates at 50 m/s2. How large is the force required to cause an acceleration of this size?
|A. |1/4 N |
|B. |4 N |
|C. |1,000 N |
|D. |10,000 N |
In the graph below, the acceleration of an object is plotted against the net force applied to the object.
[pic]
Figure 6-2A
62. When a net force of 2 newtons is applied, the object graphed in Figure 6-2A accelerates at:
|A. |1 m/s2 |
|B. |2 m/s2 |
|C. |3 m/s2 |
|D. |4 m/s2 |
63. Different forces were applied to each of two blocks, A and B. The graphs below show the relationship between the force and the acceleration for each block.
[pic]
How does the mass of block A compare to the mass of block B?
|A. |the same. |
|B. |twice as great. |
|C. |half as great. |
|D. |four times as great. |
64. Newton’s third law of motion involves:
|A. |one force acting on one object. |
|B. |a force pair acting on two different objects. |
|C. |a force pair acting on one object. |
|D. |unbalanced forces acting on many objects. |
65. “Every action force creates a reaction force that is equal in strength and opposite in direction.” This statement summarizes Newton’s:
|A. |1st law of motion. |
|B. |2nd law of motion. |
|C. |3rd law of motion. |
|D. |law of gravitational force. |
66. What is the momentum of a 2000-kg car traveling at 20 m/s?
|A. |0 kg·m/sec |
|B. |0.001 kg·m/sec |
|C. |100 kg·m/sec |
|D. |40,000 kg·m/sec |
67. If you go twice as fast, your kinetic energy becomes:
|A. |2 times smaller. |
|B. |4 times smaller. |
|C. |2 times bigger. |
|D. |4 times bigger. |
68. Energy is measured in:
|A. |newtons. |
|B. |joules. |
|C. |kg/m2 |
|D. |kg•m/s2 |
69. An extended spring stores:
|A. |radiant energy. |
|B. |potential energy. |
|C. |kinetic energy. |
|D. |chemical energy. |
70. Energy can be thought of as stored ____.
|A. |Force |
|B. |Mass |
|C. |Weight |
|D. |Work |
71. Kinetic energy increases with:
|A. |mass and distance. |
|B. |mass and speed. |
|C. |speed and distance. |
|D. |speed and time. |
72. What happens to the potential energy of a car parked at the top of a hill if you double the mass of the car?
|A. |It increases by 4 times |
|B. |It increases by 2 times |
|C. |It decreases by 4 times |
|D. |It decreases by 2 times. |
73. Natalie lifts a 15-kg rock from the ground onto a 1.5 meter high wall. What is the amount of potential energy she has given the rock?
|A. |10 joules |
|B. |23 joules |
|C. |220 joules |
|D. |2,200 joules |
74. What is the kinetic energy of a go-cart with a mass of 150 kilograms and a speed of 20. m/s?
|A. |1,500 J |
|B. |3,000 J |
|C. |30,000 J |
|D. |60,000 J |
75. On what does kinetic energy depend?
|A. |Mass and velocity |
|B. |Gravity and mass |
|C. |Gravity and height |
|D. |Velocity and gravity |
76. When energy in a system is transformed, what happens to the total amount of energy in the system?
|A. |It increases. |
|B. |It decreases. |
|C. |It stays the same. |
|D. |It goes to zero. |
77. A bowler lifts her bowling ball a distance of 0.5 meters using 35 joules of energy. What is the mass of her bowling ball?
|A. |3 kg |
|B. |7 kg |
|C. |17.5 kg |
|D. |35 kg |
78. Friction between two surfaces transforms energy of motion directly to:
|A. |electric energy. |
|B. |thermal energy. |
|C. |chemical energy. |
|D. |nuclear energy. |
79. As an object is raised to a higher position, which type of energy increases?
|A. |kinetic energy. |
|B. |potential energy. |
|C. |heat energy. |
|D. |light energy. |
80. Work may be measured using units of:
|A. |watts. |
|B. |newtons. |
|C. |joules. |
|D. |newtons per second. |
81. Which of the following use the same units of measurement?
|A. |Power and work |
|B. |Force and work |
|C. |Energy and work |
|D. |Power and energy |
82. What is the most work that can be done with 100 joules of energy?
|A. |10 J |
|B. |100 J |
|C. |1,000 J |
|D. |10,000 J |
83. Calculate the work needed to push a block with 4 newtons of force a distance of 10 meters.
|A. |0.4 joules |
|B. |2.5 joules |
|C. |4 joules |
|D. |40 joules |
84. If you do 500 joules of work using a force of 50 newtons, over what distance was the work accomplished?
|A. |0.1 m |
|B. |5 m |
|C. |10 m |
|D. |25,000 m |
85. Jake, who weighs 680 newtons, climbs a 6 meter ladder in 8 seconds. What was Jake’s power?
|A. |510 watts |
|B. |4080 watts |
|C. |5440 watts |
|D. |32640 watts |
86. The efficiency of a machine is usually expressed in:
|A. |joules. |
|B. |watts. |
|C. |newton-meters. |
|D. |percent. |
87. A unit used to measure power is the:
|A. |joule. |
|B. |newtons per second. |
|C. |newton-meter. |
|D. |watt. |
88. How much power is necessary to do 50 joules of work in 5 seconds?
|A. |5 watts |
|B. |10 watts |
|C. |50 watts |
|D. |250 watts |
89. The efficiency of a modern bicycle is 95 percent. If you exert 200 joules in pedaling a bicycle on level ground, what is the work output?
|A. |95 joules |
|B. |105 joules |
|C. |190 joules |
|D. |295 joules |
90. An incandescent light bulb uses 60 joules of electrical energy every second. Due to heat loss, the energy available for light is reduced to only 6 joules per second. If this bulb is used to keep eggs warm in an incubator, about how efficient is the light bulb at producing HEAT?
|A. |10 percent. |
|B. |20 percent. |
|C. |60 percent. |
|D. |90 percent. |
91. A simple machine can multiply:
|A. |forces only. |
|B. |energy only. |
|C. |forces and energy. |
|D. |forces and speed. |
92. Which of the following is NOT considered a simple machine?
|A. |Wheel and axle |
|B. |Electric motor |
|C. |Lever |
|D. |Rope and pulley |
93. What is required to get work out of a machine?
|A. |Friction |
|B. |Efficiency |
|C. |Input work |
|D. |Gears |
94. A lever rotates around a fixed point called a:
|A. |ball bearing. |
|B. |gear. |
|C. |pulley. |
|D. |fulcrum. |
95. Mechanical advantage can be defined as the ratio of:
|A. |work input to work output. |
|B. |work output to work input. |
|C. |output force to input force. |
|D. |input force to output force. |
96. The simple machine that operates as a ramp that curves around a shaft is a:
|A. |rope and pulley system. |
|B. |screw. |
|C. |lever. |
|D. |gear. |
[pic]
Figure 9-1A
97. In the picture of the crowbar, which letter shows the fulcrum?
|A. |A |
|B. |B |
|C. |C |
|D. |None of the above |
98. In the picture of the crowbar, which letter shows the input force?
|A. |A |
|B. |B |
|C. |C |
|D. |None of the above |
[pic]
Figure 9-1
99. The human arm is an example of which class of lever?
[pic]
|A. |First class |
|B. |Second class |
|C. |Third class |
|D. |None of the above |
100. A simple machine has an input force of 10 newtons and an output force of 100 newtons. What is the mechanical advantage of the simple machine?
|A. |0.1 |
|B. |1 |
|C. |10 |
|D. |90 |
Physical Science Comprehensive Spring 2011 Test
Answer Section
MULTIPLE CHOICE
1. ANS: D REF: Technology
2. ANS: B REF: 1.5
3. ANS: D DIF: basic REF: section 1.1
4. ANS: B DIF: basic REF: section 1.1
5. ANS: C DIF: intermediate REF: section 1.2
6. ANS: A DIF: basic REF: section 1.3
7. ANS: A DIF: basic REF: section 1.3
8. ANS: C DIF: basic REF: section 1.4
9. ANS: C DIF: intermediate REF: section 1.2
10. ANS: A DIF: intermediate REF: section 1.4
11. ANS: C DIF: intermediate REF: section 1.4
12. ANS: A DIF: basic REF: section 2.1
13. ANS: D DIF: basic REF: section 2.1
14. ANS: C DIF: basic REF: section 2.1
15. ANS: B DIF: basic REF: section 2.1
16. ANS: A DIF: intermediate REF: section 2.1
17. ANS: C DIF: intermediate REF: section 2.2
18. ANS: A DIF: intermediate REF: section 2.1
19. ANS: A DIF: advanced REF: section 2.1
20. ANS: D DIF: basic REF: section 2.2
21. ANS: C DIF: intermediate REF: section 2.2
22. ANS: B DIF: intermediate REF: section 2.2
23. ANS: E DIF: basic REF: section 3.1
24. ANS: A DIF: basic REF: section 3.1
25. ANS: C DIF: basic REF: section 3.1
26. ANS: B DIF: basic REF: section 3.1
27. ANS: B DIF: intermediate REF: section 3.1
28. ANS: A DIF: basic REF: section 3.2
29. ANS: C DIF: basic REF: section 3.3
30. ANS: A DIF: basic REF: section 3.3
31. ANS: A DIF: intermediate REF: section 3.3
32. ANS: E REF: connection
33. ANS: A DIF: basic REF: section 4.1
34. ANS: C DIF: basic REF: section 4.1
35. ANS: E DIF: basic REF: section 4.1
36. ANS: B DIF: basic REF: section 4.1
37. ANS: D DIF: intermediate REF: section 4.1
38. ANS: A DIF: intermediate REF: section 4.1
39. ANS: D DIF: intermediate REF: section 4.1
40. ANS: C DIF: advanced REF: section 4.1
41. ANS: D DIF: basic REF: section 4.2
42. ANS: A DIF: basic REF: section 4.2
43. ANS: C DIF: basic REF: section 4.2
44. ANS: C DIF: basic REF: section 4.2
45. ANS: C DIF: intermediate REF: section 4.2
46. ANS: B DIF: basic REF: section 5.1
47. ANS: B DIF: basic REF: section 5.1
48. ANS: C DIF: intermediate REF: section 5.1
49. ANS: B DIF: intermediate REF: section 5.1
50. ANS: B DIF: basic REF: section 5.2
51. ANS: B DIF: intermediate REF: section 5.2
52. ANS: C DIF: intermediate REF: section 5.3
53. ANS: A DIF: intermediate REF: section 5.3
54. ANS: D DIF: intermediate REF: section 5.3
55. ANS: C DIF: basic REF: section 6.1
56. ANS: B DIF: basic REF: section 6.1
57. ANS: A DIF: basic REF: section 6.1
58. ANS: B DIF: basic REF: section 6.1
59. ANS: D DIF: advanced REF: section 6.1 | section 6.3
60. ANS: B DIF: intermediate REF: section 6.2
61. ANS: D DIF: intermediate REF: section 6.2
62. ANS: B DIF: intermediate REF: section 6.2
63. ANS: C DIF: advanced REF: section 6.2
64. ANS: B DIF: basic REF: section 6.3
65. ANS: C DIF: basic REF: section 6.3
66. ANS: D DIF: intermediate REF: section 6.3
67. ANS: D DIF: basic REF: section 7.1
68. ANS: B DIF: basic REF: section 7.1
69. ANS: B DIF: basic REF: section 7.1
70. ANS: D DIF: basic REF: section 7.1
71. ANS: B DIF: basic REF: section 7.1
72. ANS: B DIF: intermediate REF: section 7.1
73. ANS: C DIF: intermediate REF: section 7.1
74. ANS: C DIF: intermediate REF: section 7.1
75. ANS: A DIF: intermediate REF: section 7.1
76. ANS: C DIF: intermediate REF: section 7.2
77. ANS: B DIF: intermediate REF: section 7.2
78. ANS: B DIF: intermediate REF: section 7.2
79. ANS: B DIF: intermediate REF: section 7.3
80. ANS: C DIF: basic REF: section 8.1
81. ANS: C DIF: basic REF: section 8.1
82. ANS: B DIF: basic REF: section 8.1
83. ANS: D DIF: intermediate REF: section 8.1
84. ANS: C DIF: intermediate REF: section 8.1
85. ANS: A DIF: intermediate REF: section 8.1
86. ANS: D DIF: basic REF: section 8.2
87. ANS: D DIF: basic REF: section 8.2
88. ANS: B DIF: intermediate REF: section 8.2
89. ANS: C DIF: intermediate REF: section 8.2
90. ANS: A DIF: advanced REF: section 8.2
91. ANS: D DIF: basic REF: section 9.1
92. ANS: B DIF: basic REF: section 9.1
93. ANS: C DIF: basic REF: section 9.1
94. ANS: D DIF: basic REF: section 9.1
95. ANS: C DIF: basic REF: section 9.2
96. ANS: B DIF: basic REF: section 9.2
97. ANS: C DIF: basic REF: section 9.2
98. ANS: B DIF: basic REF: section 9.2
99. ANS: C DIF: intermediate REF: section 9.2
100. ANS: C DIF: intermediate REF: section 9.2
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