3. Unit for Frequency of a Wave
Name: ______Per: ______Date ______
Units:
1. Unit for speed
2. Unit of intensity/loudness
3. Unit for frequency of a wave
4. Unit of power
5. Unit of force
6. Unit of acceleration
7. Unit of energy
Measurement
8. The unit of length that most nearly matches the width of your finger is the:
9. List the measurement prefixes in order from smallest to largest.
10. What are the basic units to measure length, volume, and mass?
11. How many centimeters are there in a stick 3 meters long?
12. What is the mass shown on the triple beam balance?
Motion: Speed Velocity, Acceleration
13. Gravity causes things to fall at the same rate (ignore air resistance). True or False?
14. What is speed?
15. What is the speed of a rocket that travels 2,000 meters in 4 seconds?
16. If an automobile travels at 25 m/sec for 50 seconds, how far has the car traveled?
17. A dragster accelerates from rest to 60 m/sec in 3 seconds. What is the acceleration of the dragster?
18. The acceleration due to gravity is approximately 10 m/sec2. If a penny is dropped from the thirteenth floor of a building, ignoring air resistance, after falling for 8 seconds what will the speed of the penny be?
19. Use the graph to predict the speed of the car when the car is at 50 cm.
20. At which point on the graph is the object standing still? When is it traveling the fastest?
21. The graph showing the position of a car is given below, how far did the car travel between 1 and 2 seconds? Between 2 and 4 seconds? Total?
22. The rate of acceleration due to gravity on earth is______.
23. In this speed vs. time graph, what is the object doing at each point?
C.
Forces: Newton’s Laws of Motion, Momentum
24. Newton’s 1st Law of Motion is also called the Law of ______.
25. Compared to your weight and mass on Earth, on the Moon, your weight would be ______and your mass would be ______. (use words: greater, less, the same)
26. Objects tend to resist changes in motion. This property is called ______.
27. As you climb up Mount Everest and you get farther away from the center of the Earth, your ______decreases and your ______stays the same.
28. What is the mass of a chair that weighs 49 newtons? (Fw= mg)
29. A bulldozer pushes a 5000-kilogram pile of dirt with a net force of 5,000 newtons. What is the acceleration of the pile?
30. A 0.50-kilogram baseball accelerates at 50 m/sec2. How large is the force required to cause an acceleration of this size?
31. What is the momentum of a 2.5 -kilogram bowling ball moving at 10 m/sec?
32. If a force of 100 N was exerted on an object and no work was done, what motion did the object have?
33. A 800-kilogram Volkswagen and a 1500-kilogram semi truck are both traveling at 27 m/sec. Which object has more momentum? Why?
34. The relationship between force, mass, and acceleration is explained by Newton’s ______Law.
35. A rocket blasts off from earth. This is an example of Newton’s ______Law.
36. Forces must be ______to cause a change in motion.
Machines, Mechanical Systems, Work, Power
42. Calculate the work needed to lift a book weighing 7 newtons a height of 3 meters.
Energy
Please define…
46. Gravitational potential energy:
47. Kinetic energy:
48. Thermal energy:
49. Chemical energy:
50. Energy can be defined as the ability to do ______.
51. Energy is measured in______.
52. When a ball is dropped from a tall building, potential energy converts to kinetic energy. As this happens, its speed will ______.
53. Compare the kinetic energy of the following: a truck going 20 km/hr or a bird flying 20 km/hr. Are they the same? Why or why not?
54. A marble rolls along the track below with no friction. Where is the GPE the greatest? Where is the KE the greatest? The speed will be greater at the ______of a hill, and slower at the ______.
55. A 10 kg box is held 5 m above the ground. What is the GPE of the box?
56. Moving electrical charges produce ______.
57. A change in energy from one form to another is called a ______.
Heating and Cooling
Identify these common temperatures…
58. 37 oC
59. 0oC
60. 25oC
61. 212oF
62. 0 K
Define…
63. Conduction:
64. Convection:
65. Radiation:
66. Reflectors:
67. Insulators:
68. Temperature:
69. Average normal human body temperature measured in degrees Fahrenheit is ______.
70. What is heat?
71. Water boils at a temperature of ______oF, or ______oC.
72. What are the common units of heat energy? (there are three)
73. Which of the following will have the greatest amount of thermal energy: large and cold, small and cold, large and warm, small and warm?
74. If you hold a can of soda just removed from the refrigerator in your hand, heat will go from ______to ______.
75. Hot air rises up a chimney due to ______.
76. Conduction is the transfer of thermal energy due to______.
77. Of solid, liquid, and gas, which is generally the worst conductor?
Which is generally the best?
Explain both answers.
78. If I mix equal parts of ice (at 0 oC) and boiling water, what will be the equilibrium temperature?
79. Provide some examples of good insulators.
80. The type of heat transfer called convection happens as a result of…
81. The type of heat transfer which requires no matter for it to occur is called ______.
Specific Heats of Some Common Substances
Substance / Specific Heat in calories/gram °Celsiuswater / 1.00
ethanol / 0.584
aluminum / 0.215
gold / 0.031
Table 9-1A
82. The temperature of 100 grams of gold is increased by 5° Celsius. Based on Table 9-1A, the increase in the thermal energy of the gold is:
83. Suppose you add the same amount of thermal energy to each of the following substances. Based on Table 9-1A, which would undergo the smallest change in temperature?
Which would have the greatest?
84. Most heat loss in a mechanical system is due to ______. This can be reduced by using ______, ______, or ______.
Waves and Sounds
Identify the wave behavior for the following…
85. White noise
86. Light spreading out after it goes through a slit
87. Bending of light as it passes through a lens
88. Echo
Label the parts of the transverse wave:
89. A
90. B
91. C
92. D
93. E
Label the parts of the longitudinal wave:
94. A
95. B
96. C
97. In the picture below, the person sees the image of the fish in a different location than the actual fish. This happens because of ______
Figure 4.1
98. Which of the waves in Figure 4.1 has the greatest frequency? Which has the greatest amplitude?
99. The wavelength of a wave is defined as:
100. Sound waves are always ______and light is always ______.
101. The wave shown in the diagram above is an example of what type of wave? How do you know?
102. In the space below, draw two waves that would have the following types of interference:
Constructive Destructive
104. What has to happen to have constructive interference? For destructive interference?
105. As frequency increases, what happens to wavelength?
107. A decibel is a unit used to measure what?
108. The word ultrasonic means that the sound has too high a ______for humans to hear.
Light, Color, Optics
Identify the electromagnetic wave that goes with each example.
109. ______ROY G BIV
110. ______Cancer Treatment
111. ______Communications
112. ______Look for broken bones
113. ______Used in tanning beds
114. ______Night vision binoculars or goggles
115. Please list all electromagnetic energy invisible to the human eye.
116. Of the waves listed, the one with the highest frequency is ______radiation.
117. Sunscreen protects your skin from sunburn. For sunscreen to be effective, it must block or absorb what?
118. The primary pigments used in color printers are:
119. If white light falls upon a piece of red cloth, the cloth absorbs______and reflects ______.
120. A mirror changes the direction of light through the process of ______.
121. What is a laser?
122. All electromagnetic waves have the same ______.
123. A radio wave has a wavelength of 3.5 m and travels at the speed of light (300,000,000 m/s). What is the frequency of the radio wave?
124. A light ray strikes a lens parallel to the axis of the lens. Which of the following rays best represents the path of the light ray as it leaves the lens?
Electricity, Circuits, Magnetis
Name: ______Per: ______Date ______
What is the unit for each?
125. _____ Current
126. _____ Resistance
127. _____ Voltage (Potential Difference)
128. _____ Power
What do these symbols stand for?
129. R______
130. I______
131. V______
Name: ______Per: ______Date ______
132. Negative electric charges ______positive charges and ______negative charges.
133. An open circuit is off. True or False?
134. In a ______circuit, electrons have more than one path to follow.
135. When electrons move back and forth reversing their direction regularly, this current is called ______current.
136. What are the safety devices that measure or react to specific levels of current? (there are three)
137. A volt is the unit of measurement for ______.
138. In an electrical circuit, what causes the energy for the “push” of voltage?
139. What is the voltage drop across each resistor in the circuit below?
140. In the circuit below, 3 amperes of current passes through the light bulb. The resistance of the light bulb
is 1.5 ohms. What is the voltage of the battery?
141. In an electrical circuit, the term current refers to the ______of electrons.
142. The flow of electrons along a conductor, which is measured in amps, is called ______.
143. What are two examples that would make a good comparison for a resistor?
144. Ohm’s Law states that as resistance increases, the current ______.
145. Calculate the total resistance in the circuit below.
146. Power describes the rate of ______. Power is calculated in a circuit by multiplying voltage times______.
147. If a microwave draws 12.0 amps of current when plugged into a 120-volt outlet, what is its power rating?
148. One kilowatt is equal to how many watts?
149. When current flows through a coil of wire around a core of iron, you have an ______.
150. Three ways you can increase the strength of an electromagnet are: