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FORMATIVE ASSESSMENT IN SCIENCE GRADE 9

Quiz by CID Office SDO Balanga

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10 questions
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  • Q1
    Metal salts when heated produce different colors because of the absorption of heat  from the flame. Which of the following does NOT describe the flame color of the  compound when heated?
    Boric acid - green
    Sodium chloride - orange 
    Copper (II) sulfate – blue- green 
    Potassium chloride – yellow
    30s
  • Q2
    Bohr’s atomic model describes the atom like a solar system, where the electrons are  found only in a specific circular path which are represented by symbol “n”.  What does the symbol “n” in the Bohr’s theory of atomic structure represents?
    The total energy of the atom. 
    The orbit in which an electron is found.
    The number of electrons in an energy level.
    The energy of electron. 
    30s
  • Q3
    What will happen when an electron moves from a higher energy level to a lower  energy level?
    The atom moves faster. 
    This process is not possible. 
    Another electron goes up from a lower to a higher energy level. 
    Colored light is given off.
    30s
  • Q4
    A toy was stucked high up in a tree. Children are throwing their slippers to hit the toy and eventually free it from the branches of the tree. Which angle of release would most likely be useful to accomplish the task of getting the toy back?
    60⁰
    90⁰
    30⁰
    45⁰
    30s
  • Q5
    For a cannonball to be shot the farthest, which angle of release is most appropriate?
    30⁰
    60⁰
    90⁰
    45⁰
    30s
  • Q6
    A pingpong ball is tossed upward. When the ball is at its highest point, which statement best describes the ball's velocity and acceleration?
    Its velocity is zero and its acceleration is not zero.
    Both its velocity and acceleration are zero
    Both its velocity and acceleration are not zero.
    Its velocity is not zero and its acceleration is zero.
    30s
  • Q7
    A steel ball is rolled horizontally off a high platform at 12.0 m/s. It falls and hits the ground 18.0 m below. How long does the ball stay in the air?
    t=2.5s
    t=2.0 s
    t=1.75 s
    t=3.0 s
    30s
  • Q8
    A rock is rolled horizontally off a high platform at 12.0 m/s. It falls and hits the ground 18.0 m below.How far from the base of the platform does the rock hit the ground?
    dx=10.0m
    dx=15.0m
    dx=21.0m
    dx=18.0m
    30s
  • Q9
    The unknown element has a single orbital of 4d sublevel , what is the maximum number of electrons does it may contain?
    2
    5
    4
    10
    30s
  • Q10
    The last entering electrons of Lithium and Berrylium have the same
    n only
    n and l
    ml and ms
    n and ms
    30s

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