STUDENT NAME DATE ID Interim Assessment 1 7 th Grade SCIENCE Administered October 2004
Work = force distance Speed = FORMULA CHART for Middle School Grade 8 Science Assessment Force = mass acceleration Weight = mass acceleration due to gravity Density = distance time mass volume Constants/Conversions g = acceleration due to gravity = 9.8 speed of light = 3 10 8 speed of sound = 343 m at sea level and 20 C s 1 cm 3 = 1 ml m s m s 2 W = Fd s = d t F = ma Weight = mg D = m v Centimeters 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Page 1
Group 1 1 H 1.008 Hydrogen 2 3 4 Li Be 6.941 9.012 Lithium Beryllium 11 12 Na Mg 22.990 24.305 Sodium Magnesium 19 20 K Ca 3 Sc 4 Ti 5 1 2 3 4 5 6 7 Periodic Table of the Elements V 6 21 22 23 24 25 26 27 39.098 40.08 44.956 47.88 50.942 51.996 54.938 55.847 58.933 Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt 37 38 39 40 41 42 43 44 45 Cr 7 Mn Rb Sr Y Zr Nb Mo Tc Ru 85.468 87.62 88.906 91.224 92.906 95.94 (98) 101.07 102.906 Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium 55 56 57 72 73 74 75 76 77 Cs Ba La Hf Ta W Re Os 132.905 137.33 138.906 178.49 180.948 183.84 186.207 190.23 192.22 Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium 87 88 89 104 105 106 107 108 109 Fr Ra Ac Rf Db Sg Bh Hs Mt (223) 226.025 227.028 (261) (262) (263) (262) (265) (266) Francium Radium Actinium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium 8 Fe 9 Co Rh Ir Lanthanide Series Actinide Series 58 Ce Th Pr Pa Nd U Pm Np Sm 140.12 140.908 144.24 (145) 150.36 Cerium Praseodymium Neodymium Promethium Samarium 90 59 91 60 92 61 93 62 94 Pu 232.038 231.036 238.029 237.048 (244) Thorium Protactinium Uranium Neptunium Plutonium Atomic number 10 11 28 Ni Pd Pt Symbol Atomic mass 29 Cu Ag Au 12 30 Zn Cd Hg 14 Si 28.086 Silicon Ga In Sn Sb Te I Tl Ge Pb Name As Bi Se Po Br At 18 2 He 4.0026 13 14 15 16 17 Helium 5 6 7 8 9 10 B C N O F Ne 10.81 12.011 14.007 15.999 18.998 20.179 Boron Carbon Nitrogen Oxygen Fluorine Neon 13 14 15 16 17 18 Al Si P S Cl Ar 26.982 28.086 30.974 32.066 35.453 39.948 Aluminum Silicon Phosphorus Sulfur Chlorine Argon 31 32 33 34 35 36 58.69 63.546 65.39 69.72 72.61 74.922 78.96 79.904 83.80 Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton 46 47 48 49 50 51 52 53 54 106.42 107.868 112.41 114.82 118.71 121.763 127.60 126.904 131.29 Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon 78 79 80 81 82 83 84 85 86 195.08 196.967 200.59 204.383 207.2 208.980 (209) (210) (222) Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon 110 Mass numbers in parentheses are those of the most stable or most common isotope. (269) Kr Xe Rn 63 Eu Am 64 Gd Cm 65 Tb Bk 66 Dy Cf 67 Ho 151.97 157.25 158.925 162.50 164.930 167.26 168.934 173.04 174.967 Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium 95 96 97 98 99 Es (243) (247) (247) (251) (252) (257) (258) (259) (262) Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium 68 Er 100 Fm 69 Tm 101 Md 70 Yb 102 No 71 Lu 103 Lr Page 2
A Page 3 7 th Grade Science Interim 1; SAISD Standard: 16/22; TAKS Commended: 20/22
Page 4 7 th Grade Science Interim 1; SAISD Standard: 16/22; TAKS Commended: 20/22
1 When doing an experiment with chemicals in the science classroom, a student should never - A wear goggles B have an adult present C play with an open flame D record observations 2 A lab procedure has the safety icons shown above. This means that a science student should wear - F safety goggles and gloves G a lab apron and gloves H safety goggles and a lab apron J safety goggles, a lab apron, and gloves Page 5
A student developed the following hypothesis for his science project. The speed of a skateboard rolling downhill increases faster on steeper hills. 3 The best way for the student to test this hypothesis is to - A roll the skateboard down different incline angles using boards of the same length and measure the time B roll the skateboard down different incline angles using boards of different length and measure the time C push the skateboard at different speeds down different incline angles and measure the distance traveled D push the skateboard with varying force down different inclines and measure the net force of the skateboard Ball "A" Velocity (meters/second) Ball "B" Time (seconds) 4 The graph above describes the motion of 2 different balls - ball A and ball B. According to the graph, ball A is - F moving with constant velocity G decelerating H moving with constant acceleration J not moving Page 6
Distance versus Time for Moving Objects Cruising plane Distance (meters) Racing car Flying bird Running cheetah Walking person Time (seconds) 5 The graph above shows distance-time data for various objects. The conclusion that can be determined from the data in the graph is - A the racing car is traveling the fastest of all the objects B the line of the fastest-moving object is the steepest C the bird and cheetah are traveling at the same speed D the line of the slowest-moving object is the steepest Page 7
6 As the temperature of a sample of water increases, the amount of sugar that can be dissolved in the water also increases. The graph that correctly shows this relationship is - F H Amount of Sugar Dissolved Water Temperature Water Temperature G J Amount of Sugar Dissolved Amount of Sugar Dissolved Amount of Sugar Dissolved Water Temperature Water Temperature Page 8
7 Through laboratory investigations, scientists have determined that car crashes are more dangerous when cars are traveling at high speeds. Which of the following is a reasonable explanation for that fact? A B C D A car has more potential energy at higher speeds. Mass has a greater effect on kinetic energy than speed does. A car experiences more friction at higher speeds. A car has more kinetic energy at higher speeds. Type of Stain Detergent Chocolate Grass Ketchup Jelly Syrup Brand A * * Brand B * * Brand C * * * * Brand D * * * *Indicates the stain was removed 8 A student did a science investigation to determine which brand of detergent would be the most effective in cleaning stains. The data is displayed in the chart above. According to the data collected, the detergent that is the most effective in cleaning stains is - F Brand A G Brand B H Brand C J Brand D Student A Student B 9 This model shows the forces applied when two students push on opposite sides of a box. This model does not show - A B C D Page 9 the forces acting in opposite directions that the forces are unequal that student B is pushing harder the actual amount of force
10 Which of the following statements describes a chemical property of gold? F It s a solid. G It s not soluble in water. H It s malleable. J It does not react with oxygen. 11 An example of changing a substance chemically is - A melting wax B boiling water C crushing ice D burning wood 12 A science student would like to do a class demonstration that shows an example of chemical phenomena. If the student had a large piece of plastic, which of the following actions would describe how the student could demonstrate a chemical phenomena? F Hit the plastic with a hammer. G Burn the plastic with a match. H Determine the density of the plastic. J Find the mass of the plastic. 13 Potassium is an element, a metal, which is found in Group 1 of the periodic table. Which element has physical properties that are similar to potassium? A B C D Sodium Helium Silicon Chlorine Page 10
14 A scientist has just discovered a new element and needs to determine where it would be placed on the periodic table. The characteristics of the new element are as follows: shiny, solid, conducts electric currents, and malleable. The group that the new element would belong to is - F metalloids G nonmetals H metals J unknown 15 When describing a compound, all of the following statements are true except - A compounds can be broken down into simpler substances B compounds join with no specific ratio C compounds have a unique set of properties D compounds are formed by the combination of two or more elements 16 Sodium chloride is a compound commonly known as salt. Salt is composed of sodium and chlorine. Therefore sodium and chlorine are - F solutions G mixtures H compounds J elements Page 11
17 All of the following statements represent a soccer ball being subjected to an unbalanced force except A kicking the ball B the ball sitting on the ground C picking the ball up D stopping the ball with your foot 18 Which of the following actions best demonstrates kinetic energy? F A rock on the edge of a cliff G A stretched rubber band H A bowling ball rolling J A car waiting at a red light 19 In a science class, students were studying kinetic and potential energy. Students were asked to observe an apple tree during a field investigation. Which of the following examples would represent potential energy? A An apple hanging on the tree B An apple falling to the ground C An apple being eaten by a bird D An apple being picked by a person Page 12
20 A lever is a simple machine that consists of a bar resting on a turning point called a fulcrum. A student wants to lift a box that is resting on one end of a lever using the least amount of force necessary. The picture that shows the best position for the fulcrum is - Lever F Lever G Lever H Lever J 21 There are six basic types of simple machines, however all simple machines - A increase work B change the force or distance C decrease work D eliminate friction forces Page 13
Start line Stop line 22 In a science experiment, a student was observing how far a snail could travel in 1 minute. The student placed a snail at the start line and measured the time it traveled with a stopwatch. After 1 minute, the student marked the place where the snail was (stop line.) To the nearest centimeter, how far did the snail travel in 1 minute? F 7 centimeters G 8 centimeters H 9 centimeters J 10 centimeters Page 14