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Example Items Integrated Physics and Chemistry Integrated Physics and Chemistry Example Items are a representative set of items for the ACP. Teachers may use this set of items along with the test blueprint as guides to prepare students for the ACP. On the last page, the correct answer and content SE is listed. The specific part of an SE that an Example Item measures is NOT necessarily the only part of the SE that is assessed on the ACP. None of these Example Items will appear on the ACP. Teachers may provide feedback regarding Example Items. (1) Download the Example Feedback Form and email it. The form is located on the homepage of Assessment.dallasisd.org. OR (2) To submit directly, click “Example Feedback” after you login to the Assessment website. Second Semester 2016–2017 Code #: 3291 STAAR STAAR PHYSICS RefeRenCe MATeRIAlS TM State of Texas Assessments of Academic Readiness fORCe AnD MOTIOn Average velocity = displacement v change in time avg final velocity − initial velocity Acceleration = 2 Acceleration = 2 (final velocity) − (initial velocity) Displacement = a = 2(displace ment) ( initial velocity )( Centripetal acceleration = ) ( change change 1 + (acceleration) in time in time 2 (tangential velocity) v f − vi a = change in time ) 2 ∆t v f2 − vi2 2∆d ∆d = vi∆t + 1 a∆t 2 2 2 ac = radius Net force = (mass)(acceleration) v t2 r Fnet = ma Work = (force)(distance) W = Fd τ Torque = (force)(lever arm) Power = = ∆d ∆t work time = Fr P = W t a2 + b2 = c 2 Pythagorean theorem GRAVITATIOnAl, eleCTRICAl, AnD MAGneTIC fORCeS Force of gravitational attraction between = 2 objects Force between = 2 charged particles ( ( universal gravitation constant Coulomb’s constant ( ) ( )( ( ( mass of 1st object mass of 2nd object ) distance between centers of objects charge of 1st particle )( charge of 2nd particle ) (distance between particles) Electrical power = (voltage)(current) Current = )( voltage resistance Equivalent resistance for resistors in series Equivalent resistance for resistors in parallel 2 ) 2 ) ) Fg = G ( ) Felectric = kC m1m2 d2 ( ) q1q2 d2 P = VI I = V R R = R1 + R2 + R3 + . . . 1 1 1 1 = + + + . . . R R1 R2 R3 STAAR PHYSICS RefeRenCe MATeRIAlS eneRGY AnD MOMenTUM Kinetic energy = 1 2 (mass)(velocity) 2 KE = 1 mv 2 2 ( )( Gravitational potential energy = (mass) Elastic potential energy = ( 1 spring 2 constant ) acceleration (height) due to gravity distance stretched or compressed ) PEg = mgh 2 PEelastic = 1 kx 2 2 Energy = (power)(time) E = Pt Work = change in kinetic energy W = ∆KE Mechanical energy = kinetic energy + potential energy ME = KE + PE Law of conservation of energy KEi + PEi = KE f + PE f Momentum = (mass)(velocity) p = mv Impulse = (force)(change in time) = (mass)(change in velocity) Law of conservation of momentum J = F ∆t = m∆v m1v1 + m2v2 = m1v1 + m2v2 i ( specific Heat gained or lost = (mass) heat )( change in temperature ) i f f Q = mcp∆T WAVeS AnD lIGHT Velocity = (frequency)(wavelength) 1 Focal length Energy = 1 distance to image = (mass)(speed of light)2 + v = fλ 1 1 distance to object f = 1 di + 1 do E = mc 2 STAAR PHYSICS RefeRenCe MATeRIAlS COnSTAnTS AnD COnVeRSIOnS m s 8 c = speed of light = 3.00 × 10 m g = acceleration due to gravity = 9.8 s G = universal gravitation constant = 6.67 × 10 k c = Coulomb’s constant = 8.99 × 10 9 m = mass of Earth = 5.97 × 10 24 E 6 newton (N) = kg ⋅ m s 2 joule (J) = N ⋅ m watt (W) = J N⋅m = s s hertz (Hz) = cycle s −11 C kg N⋅m kg N⋅m r = radius of Earth = 6.37 × 10 m E 2 2 2 2 2 7 6 5 4 3 2 1 (262) (267) Actinide Series Lanthanide Series 60 140.908 Cerium 90 89 144.242 (145) 61 Pm Hassium (270) Hs 108 190.23 Osmium Os 76 Ruthenium 101.07 44 Ru Iron 55.845 Fe 26 8 Silicon 28.086 Si 14 Pa 231.036 Protactinium Th 232.038 Thorium Ac (227) Actinium 91 U Uranium 238.029 92 Np Neptunium (237) 93 Praseodymium Neodymium Promethium 140.116 138.905 Nd 59 Lanthanum La Pr 58 Bohrium (271) Seaborgium (272) Bh (268) Sg 107 Rhenium 186.207 Re 75 Dubnium Db 106 183.84 Tungsten 180.948 Tantalum 74 W 105 (98) 43 Tc Manganese 54.938 Mn 25 7 7B Molybdenum Technetium 95.96 42 Mo Chromium 51.996 Cr 24 6 6B Ta 73 Niobium 92.906 41 Nb Vanadium 50.942 V 23 5 5B Atomic mass Symbol Atomic number Ce 57 Lawrencium Rutherfordium (226) Radium Fr Rf 104 103 (223) 88 87 Hafnium 178.49 Hf Lutetium 174.967 Francium Barium Cesium Lr 137.328 132.905 Lu 72 71 Ra Ba Cs 56 55 Zirconium 91.224 40 Zr Yttrium 88.906 87.62 Strontium 85.468 Rubidium Y 39 Sr 38 Rb 37 47.867 Titanium 44.956 Scandium 40.078 Calcium 39.098 Potassium 22 Ti 21 4 4B Sc 20 19 3 3B Ca Magnesium Sodium K Mg 24.305 Na 12 11 22.990 9.012 Beryllium 6.941 4 Be 2 2A Lithium Li 3 Hydrogen 1.008 H 1 1 1A PERIODIC TABLE OF THE ELEMENTS STAAR PHYSICS REFERENCE MATERIALS (281) Ds 110 Platinum 195.085 Pt 78 Palladium 106.42 46 Pd Nickel 58.693 Ni 28 10 (280) Rg 111 Gold 196.967 Au 79 Silver 107.868 47 Ag Copper 63.546 Cu 29 11 1B Pu Plutonium (244) 94 Samarium 150.36 62 Sm (247) Curium Americium Cm 96 (243) Am 95 157.25 Gadolinium 151.964 64 Gd Europium 63 Eu Meitnerium Darmstadtium Roentgenium (276) Mt 109 Iridium 192.217 Ir 77 Rhodium 102.906 45 Rh Cobalt 58.933 Co 27 9 8B Name Al Thallium 204.383 Tl 81 Indium 114.818 49 In Gallium 69.723 Ga 31 Aluminum 26.982 Si Lead 207.2 Pb 82 Tin 118.711 50 Sn Germanium 72.64 Ge 32 Silicon 28.086 14 Carbon 12.011 6 C 14 4A Bismuth 208.980 Bi 83 Antimony 121.760 51 Sb Arsenic 74.922 As 33 Phosphorus P 30.974 15 Nitrogen 14.007 7 N 15 5A Bk Berkelium (247) 97 Terbium 158.925 65 Tb Cf Californium (251) 98 Dysprosium 162.500 66 Dy Es Einsteinium (252) 99 Holmium 164.930 67 Ho Fm Fermium (257) 100 Erbium 167.259 68 Er Mass numbers in parentheses are those of the most stable or most common isotope. Mercury 200.59 Hg 80 Cadmium 112.412 48 Cd Zinc 65.38 Zn 30 12 2B 13 Boron 10.812 5 B 13 3A S Md Mendelevium (258) 101 Thulium 168.934 69 Tm Polonium (209) Po 84 Tellurium 127.60 52 Te Selenium 78.96 Se 34 Sulfur 32.066 16 Oxygen 15.999 8 O 16 6A Cl No 4.003 Ar Radon (222) 86 Rn Xenon 131.294 54 Xe Krypton 83.798 36 Kr Argon 39.948 18 Neon 20.180 10 Ne Helium Updated Spring 2011 Nobelium (259) 102 Ytterbium 173.055 70 Yb Astatine (210) At 85 Iodine 126.904 I 53 Bromine 79.904 Br 35 Chlorine 35.453 17 Fluorine 18.998 9 F 17 7A He 2 18 8A Page 1 of 5 EXAMPLE ITEMS IPC, Sem 2 Use the graph to answer the next question. Motion of a Toy Car Spe ed (m /s) 20 15 10 5 0 0 20 40 60 80 100 12 0 Time (s) 1 2 3 What is the acceleration of the sports car between 60 s and 100 s? A 0 m/s B 0 m/s2 C 0.38 m/s D 0.38 m/s2 Which statement is an example of the Law of Conservation of Energy? A Appliances are turned off when they are not being used. B Gasoline is stored in the trunk of a car. C The speed of a falling object increases with time. D The charge on an electron never changes. Cold-blooded animals, like lizards, raise their body temperature by basking on rocks in the Sun. The types of heat transfer used to warm cold-blooded animals are — A conduction from the Sun and radiation from the rocks B conduction from the rocks and radiation from the Sun C convection from rocks and radiation from the Sun D conduction from both the Sun and the rocks Dallas ISD - Example Items Page 2 of 5 EXAMPLE ITEMS IPC, Sem 2 Use the illustration to answer the next question. 4 5 6 Which statement best describes the gravitational forces of the two situations in the illustration? A The gravitational force in situation 1 is three times greater than in situation 2. B The gravitational forces are equal in situation 1 and situation 2. C The gravitational force in situation 1 is nine times greater than in situation 2. D The gravitational force is zero in situation 1 and situation 2. Two protons are located near each other. Which statement about the forces acting on them is true? A Since the electrical force between them is repulsive, and the gravitational force is less attractive, the protons repel each other. B Since the electrical force between them is attractive, and the gravitational force is more repulsive, the protons repel each other. C Since the electrical force between them is repulsive, and the gravitational force is more attractive, the protons attract each other. D Since the electrical force between them is repulsive, and the gravitational force is equally attractive, the protons do not attract or repel each other. An airplane flying from Dallas northeast to New York travels 1730 km in 4.3 hours. What is the airplane’s velocity? A 402.3 m/s, southwest B 402.3 m/s, northeast C 402.3 km/h, southwest D 402.3 km/h, northeast Dallas ISD - Example Items Page 3 of 5 EXAMPLE ITEMS IPC, Sem 2 7 8 9 Applying the concept of conservation of momentum, what happens to the total momentum when an automobile and a truck collide? A Total momentum will decrease. B Total momentum will increase. C Total momentum will stay the same. D There will be no total momentum. Which possesses chemical potential energy? A Slinky B Car battery C Roller coaster D Basketball A ball is thrown into the air and follows the trajectory shown. Which statement about the kinetic energy of the ball is true? A The kinetic energy at locations 1, 2, 3 and 4 are all equal. B The kinetic energy at locations 1 and 4 are equal, but the kinetic energy at locations 2 and 3 are not equal. C The kinetic energy is greatest at location 4. D The kinetic energy is greatest at location 1. Dallas ISD - Example Items Page 4 of 5 EXAMPLE ITEMS IPC, Sem 2 Use the circuit to answer the next question. 10 11 12 13 There will be no transfer of electrical energy in this parallel circuit when — A one bulb burns out in the circuit B the switch in the circuit is opened C two bulbs are removed from the circuit D the switch is replaced with a battery The bending of waves as they pass through an opening is defined as — A reflection B refraction C bentraction D diffraction If a 10.0 kg dog exerted a force of 0.70 N on a 1.3 kg ball, what was the acceleration of the ball? A 0.07 m/s2 B 0.54 m/s2 C 1.9 m/s2 D 14.3 m/s2 An electric current (moving electrons) is made to flow through a long straight piece of wire. This results in — A a magnetic field in the space outside the wire B an electric field in the space outside the wire C a magnetic field but only inside the wire D a magnetic and an electric field only inside the wire Dallas ISD - Example Items Page 5 of 5 EXAMPLE ITEMS IPC, Sem 2 14 15 Two identical boxes, A and B, are resting on the floor. Box A is pulled by a rope with a force of 50 N. Box B is pushed by a steel rod with a force of 50 N. How do the motions of the two boxes compare and why? A B accelerates faster than A because steel is stronger than rope. B Neither box accelerates because 50 N is not enough force. C They both accelerate at the same rate because the forces on them are equal. D A accelerates faster than B because a pulling force is stronger than a pushing force. Which sequence of energy conversions is commonly used to produce electrical power for residential use? A Chemical Potential Energy Heat Energy Mechanical Energy Electrical Energy B Radiant Energy Mechanical Energy Heat Energy Electrical Energy C Nuclear Energy Chemical Potential Energy Heat Energy Electrical Energy D Wind Energy Heat Energy Chemical Potential Energy Electrical Energy Dallas ISD - Example Items EXAMPLE ITEMS IPC, Sem 2 Answer SE 1 B IPC.4B 2D 2 C IPC.5D 2E 3 B IPC.5E 2D 4 C IPC.4F -- 5 A IPC.4G -- 6 D IPC.4A 2D 7 C IPC.4E 2E 8 B IPC.5B -- 9 D IPC.5A 2D 10 B IPC.5F -- 11 D IPC.5G -- 12 B IPC.4C -- 13 A IPC.5C 2D 14 C IPC.4D 2E 15 A IPC.5H 2D Dallas ISD - Example Items Process Skills