for Grade 5 I-Check 1 ORANGE PUBLIC SCHOOLS OFFICE OF CURRICULUM AND INSTRUCTION OFFICE OFD SCIENCE
i The Grade 5 I-Check is made up r of multiple choice questions, constructed response questions GRADEe and performance 5 questions. c
SCIENCEt Read each question carefully, i including diagrams and/or graphs. I-Checko 1 Work as rapidly as you can n without sacrificing accuracy. Do Unit not2: spend too much time s puzzling over a question that seems too difficult for you. Levers andAnswer Pulleys the easier questions first; then return to the harder ones. Try to answer every question, even if you have to guess.
Where necessary, you may use scratch paper for your work. Do not use the margins of the test booklet to do scratch work.
FOR ALL QUESTIONS, YOU MUST RECORD ALL OF School Year 2014-2015 YOUR ANSWERS ON THE TEST BOOKLET. I-CHECK Investigation 1—Levers
Study the graph at the right and answer the following questions. a. If the effort is applied 13 cm from the fulcrum, how much effort is needed to lift the load?
b. If it takes an effort of 2.7 N to lift the load, how far would the effort be from the fulcrum?
c. What is the relationship between the amount of effort required and its distance from the fulcrum? N a m.0 . e D 7.0 a t 6.0 e 5.0 . 4.0 Lever Ef e 3.0 . fo . . rt x 2.0 re qu p ire e 1.0 d to ri lift m th 00 5 10 15 20 25 30 e e Distance of effort from fulcrum (in centimeters) lo ad n (in t ne wt w on s) it h l o a d a p p li e d 1 5 c m
fr o I-CHECK Name m Investigation 1—Levers
(the f u little lc To the right is an metal r incomplete drawing of a indicat u spring scale. m a. Draw a bar or) on 8 the spring scale to other simple show a g machine is called a(n) measurement . of 1.4 N. N 0 b. How much force (effort) 0A lever is does each 100 a As the load is moved farther from the fulcrum, the effort needed to lift the small, light si m load line on the 01 p . spring scale l 200 e represent? m a c 02 h 300 i n e . 03 A b FOSS Levers and Pulleys Module 400 © The Regents of the University of California e Can be duplicated for classroom or workshop use. n Name e I-CHECK fi 04 Investigation 1—Levers t 500 o b t Archimedes, the Greek a mathematician, once said, “Give me a 05 i n place to stand and a lever of sufficient 600 e length, and I will move the Earth.” d b 06 y 700 u si n g 07 a 800 l e v e 08 r 900 o Explain why Archimedes’ lever r would work. 17. The unit used to measure the amount of force (effort) needed to lift a load or overcome a resistance is the
.
FOSS Levers and Pulleys Module © The Regents of the University of California Can be duplicated for classroom or workshop use. I-CHECK Name Investigation 1—Levers
18. a. Use the information on the table at Position of load Effort right to complete the graph below. (cm from fulcrum) (scale + 0.5 N) 5 cm 1.0 N 1.5 N 10 cm 2.5 N 3.0 N 15 cm 4.0 N 4.5 N 20 cm 5.5 N 6.0 N
Lever experiment with effort applied 10 cm from fulcrum
b. What is the relationship between the amount of effort required to lift the load and the distance the load is from the fulcrum? C. Less effort will be needed to I-CHECK lift the load. Investigation 1—Levers
19. The simple machine you see in this picture is a (Circle the one best answer.) A. wedge. B. wheel and axle. C. lever. D. inclined plane.
20. Use the lever pictured here to answer questions 20a and 20b.
Effort
20 15 10 5 0 l 5.0 N Load Fulcrum
a. If the load is moved closer to the fulcrum, what will happen? (Circle the one best answer.) A. More effort will be needed to lift the load. B. The same amount of effort will be needed to lift the load. C. Less effort will be needed to lift the load.
b. If the fulcrum is moved closer to the effort, what will happen? (Circle the one best answer.) A. More effort will be needed to lift the load. B. The same amount of effort will be needed to lift the load.