STUDENT NAME DATE ID. Interim Assessment 1. 7 th Grade SCIENCE

Transcription

1 STUDENT NAME DATE ID Interim Assessment 1 7 th Grade SCIENCE Administered October 2004

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3 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 = 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 Page 1

4 Group 1 1 H Hydrogen Li Be Lithium Beryllium Na Mg Sodium Magnesium K Ca 3 Sc 4 Ti Periodic Table of the Elements V Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Cr 7 Mn Rb Sr Y Zr Nb Mo Tc Ru (98) Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Cs Ba La Hf Ta W Re Os Cesium Barium Lanthanum Hafnium Tantalum Tungsten Rhenium Osmium Iridium Fr Ra Ac Rf Db Sg Bh Hs Mt (223) (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 (145) Cerium Praseodymium Neodymium Promethium Samarium Pu (244) Thorium Protactinium Uranium Neptunium Plutonium Atomic number Ni Pd Pt Symbol Atomic mass 29 Cu Ag Au Zn Cd Hg 14 Si Silicon Ga In Sn Sb Te I Tl Ge Pb Name As Bi Se Po Br At 18 2 He Helium B C N O F Ne Boron Carbon Nitrogen Oxygen Fluorine Neon Al Si P S Cl Ar Aluminum Silicon Phosphorus Sulfur Chlorine Argon Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon (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 Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium 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

5 A Page 3 7 th Grade Science Interim 1; SAISD Standard: 16/22; TAKS Commended: 20/22

6 Page 4 7 th Grade Science Interim 1; SAISD Standard: 16/22; TAKS Commended: 20/22

7 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

8 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

9 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

10 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

11 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

12 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

13 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

14 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

15 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

16 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