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Nature of Science/Forces


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10 questions
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  • Q1

    The model of the atom has changed over the past 200 years. Which of the following best explains why scientific models change over time?

    Science must always change as times change.

    A.      New evidence has been introduced through scientific discoveries.

    A.      Scientists had to create better explanations to keep publishing.

    A.      Technology, such as the internet, makes it easier to change scientific ideas.

  • Q2

    A scientist has a hypothesis that is different from the current scientific theory. What should happen to this scientist's hypothesis?

    People can accept the hypothesis if they want, but others can choose to reject it.

    If the scientist is famous, then the hypothesis should be accepted, and the theory should be changed.

    The hypothesis should be rejected if it does not agree with the current theory.

    The hypothesis should be tested, and the results should be used to determine if the theory should change.

  • Q3

    You are testing how well different dish soaps clean grease.  What is the independent (test) variable in you experiment?



    Types of grease 

    Types of dish soap

  • Q4

    How many variables should be allowed to change in a well-designed, controlled experiment?


    2 or more 


    It depends on the experiment 

  • Q5

    Luis rubbed a balloon on his hair and held the balloon next to the wall. He observed the balloon stick to the wall. Which of the following is responsible for the balloon sticking to the wall?



    Electrical Force 

    Magnetic Force 

  • Q6

    Forces that act at a distance include electrical force and gravitational force.  What other type of force acts at a distance?


    Magnetic Force 

    Contact Force 


  • Q7

    Gordon is making a list of forces for his science class. Which of the following should Gordon not list as a force?


    Push or Pull 



  • Q8

    On the Moon, astronauts can “bounce” from location to location, but on Earth they cannot move in this way. What physical property changes based on the gravitational force of a planet or moon?





  • Q9

    Which situation would produce the largest gravitational force between two objects?

    A 100-pound mass and a 500-pount mass that are 1 foot apart.

    A 100-pound mass and a 1000-pound mass that are 0.5 foot apart.

    A 100-pound mass and a 500-pound mass that are 0.5 food apart

    A 100-pound mass and a 1000- pound mass that are 1 foot apart

  • Q10

    Sarah has a 3-pound block and a 5-pound block. When would a block’s gravitational force on Sarah be the strongest?

    When she stands five feet away from the 3-pound block

    When she stands one foot away from the 3-pound block

    When she stands five feet away from the 5-pound block

    When she stands one foot away from the 5-pound block


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