CST Science Pre-test Prep Test 8th Graders

29 Questions  I  By Fancylady49
Helps you get ready for your CST.  

  
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1.  Iron oxides, such as rust, form when iron metal reacts with oxygen in the air. What are the chemical symbols for the two elements found in iron oxide?
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2.  In a comparison of metals to nonmetals, metals tend to have...
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3.  When magnesium (Mg) metal is burned in the presence of oxygen (O2), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is...
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4.  An object composed mainly of ice is orbiting the Sun in an elliptical path. This object is MOST likely...
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5.  A ball is dropped from the top of a tall building. As the ball falls, the upward force of air restistance becomes equal to the downward pull of gravity. When these two forces become equal in magnitude, the ball will...
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6.  A student divides several cubes into two groups, based on whether or not each cube can float in water. What property is the student using to classify the cubes?
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7.  Which of the following compounds is MOST likely to be part of living organisms?
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8.  A force of 5 N is required to increase the speed of a box from a rate of 1.0 m / s to m / s within 5 salong a level surface. What change would MOST likely require additional force to produce the same results?
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9.  Which of the following represents the velocity of a moving object?
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10.  Within a substance, atoms that collide frequently and more independently of one another are MOST likely in a...
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11.  Which of the following BEST describes an atom?
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12.  As a smaple of water turns to ice,...
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13.  What is the density of a 64-g iron cube that displaces 8 mL of water?
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14.  A galaxy is BEST described as a cluster of...
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15.  Two students are pushing a cart, as shown. The right is pushing 200 N, and the left is pushing 150 N. The cart will move as if it were acted on by a single force with a magnitude of...
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16.  Which class of elements BEST conducts electricity?
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17.  Which of the following is found farthest from the center of an atom?
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18.                 The  galaxies pictured above would BEST be classified as...
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19.  How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 m / s?
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20.  Red-clay bricks have a density of approximately 2000 kg / m3. Air has a density of 1 kg / m3. Which of the following has the lowest mass?
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21.  Which of the following forms of energy is released or absorbed in MOST chemical reaction?
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22.  A piece of pine wood floats on the surface of a lake because the water exerts...
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23.  What characteristic of carbon (C) makes it essential to living organisms?
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24.  Which of the following sets contains only objects that shine as a result of reflected light?
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25.  What do the the elements sulfur (S), nitrogen (N), phosphorus (P), and bromine(Br) have in common?
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26.  An athelete can run 9 kilometers in 1 hour. If the athelete runs at that same average speed for 30 minutes, how far will the athelete travel?
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27.  Which of the following elements is BEST able to combine with itself and Hydrogen(H) to form large molecules?
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28.  To express the distance between the MIlky Way galaxy and other galaxies, the MOST appropriate unit of measurement is the...
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29.  Which characteristic of motion could change without changing the velocity of an object?
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Quiz Comments (1)
there are so many problems in this quiz....
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