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5 questions
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  • Q1
    An object will continue moving in a straight line unless it is acted on by an unbalanced force. Which of the following best explains Earth’s motion?
    The gravitational force pulling Earth toward the sun is equal and opposite to the force pulling the sun toward Earth, so there is no unbalanced force acting on Earth.
    The sun moves in an elliptical orbit around Earth, and the sun’s gravity pulls Earth along.
    Earth moves in an elliptical orbit around the sun because the gravitational force of the sun attracts Earth.
    There is no unbalanced force acting on Earth because space is empty and nothing touches Earth.
    60s
    6.11b
  • Q2
    In July 1994 the comet Shoemaker-Levy 9 collided with the planet Jupiter, as scientists had predicted. To be able to accurately predict when a comet will collide with a planet, it is essential to understand —
    the attraction of opposite poles of a magnet to each other
    the composition of a planet’s atmosphere
    the formation of comets
    the gravitational attraction that exists between all bodies
    60s
    6.11b
  • Q3
    The diagram below models Mercury and Venus orbiting the sun. What force causes Venus to travel along a curved path instead of moving in a straight line as indicated by the dashed line in the diagram?
    Question Image
    Electromagnetic attraction between the sun and Venus
    Gravitational attraction between Mercury and Venus
    Gravitational attraction between the sun and Venus
    Electromagnetic attraction between Mercury and Venus
    60s
    6.11b
  • Q4
    In July 1994 the comet Shoemaker-Levy 9 collided with the planet Jupiter, as scientists had predicted. To be able to accurately predict when a comet will collide with a planet, it is essential to understand —
    the formation of comets
    the composition of a planet’s atmosphere
    the gravitational attraction that exists between all bodies
    the gravitational attraction that exists between all bodies
    60s
    6.11b
  • Q5
    A student makes a model of the sun-Earth system by swinging a ball around her head. Using this model, the student is trying to explain how Earth stays on a path around the sun. The student explains that this path is the result of —
    Question Image
    the gravitational attraction between the sun and Earth
    potential energy stored in Earth that originated in the sun
    electromagnetic energy from the sun pulling on Earth
    the magnetic attraction between Earth and the sun
    60s
    6.11b

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