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1

Which of the following measurement units is NOT an international standard unit?

Temperature -C

Electric Current -A

Length -D

Speed -B

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    2

    An unknown substance sample with mass \[50\;\;g\] was placed in a graduated cylinder containing \[40\;\;mL\] of water, causing the water level to rise to \[45.6\;\;ml\]. The unknown substance is

    Iron -C

    Aluminum -A

    Mercury -D

    Copper -B

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    3

    An aluminum sample with mass \[30\;\;g\] and density \[2.7\;\;g/mL\] was placed in a graduated cylinder containing \[30\;\;mL\] of water. The final water level equals

    \[ 47.3\;\; mL \;\;\;\;\;\;-C\]

    \[ 48.2 \;\;mL \;\;\;\;\;\;-A\]

    \[ 45.5\;\; mL\;\;\;\;\;\;-D\]

    \[ 41.1\;\; mL\;\;\;\;\;\;-B\]

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    \[\star\star 4\]

    A pencil has a length of \[13.7 \;\;cm\]. A student was asked to measure the length of the pencil using a ruler, and the measurement was \[13.9\;\;cm\]. The percentage error in the student's attempt is:

    \[ 2.17 % \;\;\;\;\;\;-C\]

    \[ 1.46% \;\;\;\;\;\;-A\]

    \[ 1.96 % \;\;\;\;\;\;-D\]

    \[ 3.12 % \;\;\;\;\;\;-B\]

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    5.

    Which of the following equals \[5\;\;km\]

    \[ 5 × 10^3 \;\;Cm \;\;\;\;\;\;-C\]

    \[ 5 × 10^6 \;\;Cm \;\;\;\;\;\;-A\]

    \[ 5 × 10^4 \;\;Cm\;\;\;\;\;\;-D\]

    \[ 5 × 10^5\;\;Cm\;\;\;\;\;\;-B\]

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    6

    Which of the following equals \[5\;\; µs\]

    \[ 5 × 10^{-6} \;\;S \;\;\;\;\;\;-C\]

    \[ 5 × 10^{-5} \;\;S \;\;\;\;\;\;-A\]

    \[ 5 × 10^{-4} \;\;S \;\;\;\;\;\;-D\]

    \[ 5 × 10^{-3} \;\;S \;\;\;\;\;\;-B\]

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    7

    The time required for an object to fall from a height of \[2\;\;m\] is \[t=0.64\;\;s\]. The fall time was measured by four students, and each student performed the measurement three times.
    The results of the students' measurements are as follows:

    Measurement Results

    Ahmed's measurements \[0.75;S\;\;\;\;\;\;\;0.76\;S\;\;\;\;\;\;\;0.77\;S-C\]

    Majed's measurements\[0.68\;S\;\;\;\;\;\;\;0.51\;S\;\;\;\;\;\;\;0.95\;S-A\]

    Yousef's measurements \[0.64\;S\;\;\;\;\;\;\;0.65\;S\;\;\;\;\;\;\;0.63\;S-D\]

    Tariq's measurements \[0.78\;S\;\;\;\;\;\;\;0.551\;S\;\;\;\;\;\;\;0.35\;S-B\]

    One of the following measurements is accurate and precise
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    8

    The graph represents the relationship between acceleration and force The slope of the graph equals

    \[ 0.2 \;\;\;\;\;\;-C\]

    \[ 0.1 \;\;\;\;\;\;-A\]

    \[ 0.3 \;\;S \;\;\;\;\;\;-D\]

    \[ 0.4\;\;\;\;\;\;-B\]

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    9

    The relationship between volume and mass was studied for a set of different masses of the same material
    The following values were obtained and a graph was plotted between mass and volume
    The resulting graph is shown below
    From the slope of the graph, the density of the material equals

    \[ 0.8\;\; g/mL \;\;\;\;\;\;-C\]

    \[2 \;\;g/mL \;\;\;\;\;\;-A\]

    \[ 0.5 \;\;g/mL \;\;\;\;\;\;-D\]

    \[ 0.4\;\; g/mL \;\;\;\;\;\;-B\]

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    10

    Which of the following equals \[5\;\;km\]

    \[5×10^4 \;\;cm\;\;\;\;\;\;-C\]

    \[5×10^3 \;\;cm\;\;\;\;\;\;-A\]

    \[5×10^6 \;\;cm\;\;\;\;\;\;-D\]

    \[5×10^5 \;\;cm\;\;\;\;\;\;-B\]

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    11

    The following numbers were measured with instruments. One of the following numbers consists of four significant figures.

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    12

    Using the rules of significant figures and scientific notation, the product of the following significant figures is: \[ 50.4 \ × 310 = …………\]

    \[ 15.62×10^{3}\;\;\;\;\;\;-C\]

    \[ 15.6×10^{3} \;\;\;\;\;\;-A\]

    \[ 1.6×10^{4}\;\;\;\;\;\;-D\]

    \[ 1.5×10^{4}\;\;\;\;\;\;-B\]

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    13

    Using significant figures rules and scientific notation, find the result of: \[ 5.63+15.1+14=..............\]

    \[ 34.7 \;\;\;\;\;\;-C\]

    \[ 34.73\;\;\;\;\;\;-A\]

    \[ 34 \;\;\;\;\;\;-D\]

    \[ 35 \;\;\;\;\;\;-B\]

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    14

    The galvanometer device in the figure below is used to measure current intensity and voltage difference, now it's used to measure current intensity
    Then the galvanometer reading with error margin is:
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    15

    Force is measured in Newtons, which is equivalent to basic units:

    \[N=\frac{Kg.m}{s^2}\]


    One of the following relationships correctly expresses the resultant force acting on an object using dimensional analysis:
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    16

    One of the following equations correctly represents the graph below:

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    17

    The device shown in the figure is an ammeter used to measure current intensity
    The correct current reading considering the margin of error is:

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    18

    One of the following graphs represents an inverse relationship

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    19

    A ruler was used to measure lengths of fabric pieces resulting in the following measurements: \[22.45 Cm \;\;, \;\;12.4676 Cm \;\;,\;\; 55.7 Cm\] Using significant figures rules for addition, the total length of these pieces equals:

    \[ 90.61 \;\;Cm \;\;\;\;\;\;-C\]

    \[ 90.6176 \;\;Cm \;\;\;\;\;\;-A\]

    \[ 90 \;\;Cm \;\;\;\;\;\;-D\]

    \[ 90.6 \;\;Cm \;\;\;\;\;\;-B\]

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    20

    One of the following answers does not represent significant figures in its measurement:

    Volume of a cup of water -C

    Time for a pen to fall-A

    Number of 10th grade students-D

    Length of a pen -B

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    21

    One of the following arrangements is the correct order of the scientific method:

    Collect information - Form hypothesis - Draw conclusions -C

    Collect information - Analyze data - Form hypothesis -A

    Form hypothesis - Collect information - Draw conclusions-D

    Test hypothesis - Form hypothesis - Draw conclusions -B

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    22

    It is a statement that describes something that occurs in nature and appears to be true in all cases:

    Models -C

    Collect information - Analyze data - Form hypothesis -A

    Scientific law-D

    Scientific theory -B

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    Solve the following problems

    1

    A student conducted an experiment on the time of a ball's fall and the distance it traveled, resulting in the following graph


    What is the shape of the graph?
    \[....................................\]
    At 1.8 seconds, what is the distance traveled by the ball?
    \[....................................\]
    The time needed for the ball to travel 6 meters
    \[....................................\]
    One of the following mathematical formulas represents the graph
    \[X=a.t^2+b.t+c\]\[X=a.t\]\[X=at+b\] \[X=\frac{a}{t}\] What is the independent physical quantity?
    \[...................................\]
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  • 2

    In the figure below
    Identify which graph represents the inverse relationship
    Identify which graph represents the linear relationship
    Identify which graph represents the quadratic relationship
    The following graph shows the relationship between position and time. From the figure, calculate the slope of the graph
    \[.........................................\;\;\;\;\;....................................\] \[.........................................\;\;\;\;\;....................................\] \[.........................................\;\;\;\;\;....................................\] \[.........................................\;\;\;\;\;....................................\] Write the equation expressing the position of the object using the slope of the graph \[.........................................\;\;\;\;\;....................................\] \[.........................................\;\;\;\;\;....................................\]

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