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TEKS Grade 8 Science - 8.6 Diagnostic - Force, Motion and Energy

Quiz by Texas Education Agency

Grade 8
Science (2017)
Texas Essential Knowledge and Skills (TEKS)

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Measures 3 skills from
Grade 8
Science (2017)
Texas Essential Knowledge and Skills (TEKS)


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10 questions
Show answers
  • Q1
    A leaf fell from a tree branch. The path it followed is shown in the diagram. Which of these best describes why the leaf fell in a crooked path instead of straight down?
    Question Image
    Objects with irregular shapes never fall in straight lines.
    Air currents and gravity applied changing and unbalanced forces to the leaf.
    The upward force of the air on the leaf was greater than the downward force of gravity.
    Once the leaf was in motion, it continued moving in the same direction because the forces were balanced.
  • Q2
    The diagram shows a homemade car being pushed with a force of 25 N. The force causes the car to move at a constant speed of 3 m/s. What will happen if the force is changed to 35 N?
    Question Image
    The car will move at a constant speed of 13 m/s.
    The speed of the car will increase.
    The speed of the car will decrease to 1 m/s.
    The speed of the car will not change.
  • Q3
    Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student’s push is 4 N, what is the net force acting on the board?
    Question Image
    10 N
    14 N
  • Q4
    The three vehicles shown are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck —
    Question Image
    needs a large amount of force to move
    is traveling on a curve in the road
    can accelerate faster than the other two vehicles
    is traveling in the opposite direction from the other two vehicles
  • Q5
    Which of the following best describes the velocity of an object?
    30 m/s
    30 m east
    30 m/s east

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