Quiz About Variables And Constants

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Quiz About Variables And Constants

A constant is a value that cannot be altered by the program during normal execution, i. E. , the value is constant. This is contrasted with a variable, which is an identifier with a value that can be changed during normal execution, i. E. , the value is variable.


Questions and Answers
  • 1. 
    Anything that can change or be changed in an experiment are called ______________.
    • A. 

      Graphs

    • B. 

      Data

    • C. 

      Variables

  • 2. 
    Look at the data table.  The person performing the experiment is going to change the amount of food the chickens will eat. The variable that the experimenter changes is called the ___________ variable.
    • A. 

      Independent variable

    • B. 

      Dependent variable

    • C. 

      Constant

  • 3. 
    Look at the data table.  During the experiment, the experimenter is going to count how many eggs the chickens lay.  The experimenter is measuring the number of eggs laid. The variable being measured that may change when you change the independent variable is called the __________ variable.
    • A. 

      Independent variable

    • B. 

      Dependent variable

    • C. 

      Constants

  • 4. 
    ____________ must remain the SAME in order for the experiment to be valid.
    • A. 

      Independent variable

    • B. 

      Dependent variable

    • C. 

      Constants

  • 5. 
    The Independent variable usually goes in the first column of a data table. The dependent variable usually goes in the second column of a data table. Look at the table below.  Which variable is the independent variable?  
    • A. 

      Speed of ball

    • B. 

      Distance ball rolls

    • C. 

      Type of ball

    • D. 

      Color of ball

  • 6. 
    There are three types of investigations.  Descriptive investigations describe an object or event.  Comparative investigations compare different objects or events.  Experimental investigations test a variable and include a control. Use the information below to answer the following question.
    • A student is designing an investigation to compare the speed of four different balls rolling down a ramp.
    What type of investigation should be used to see how fast the different balls roll down a ramp?
    • A. 

      Descriptive

    • B. 

      Comparative

    • C. 

      Experimental

  • 7. 
    The phrase "DRY MIX" helps you remember how to label a graph. Look at the graph below: What is the dependent variable?
    • A. 

      Force

    • B. 

      Time

    • C. 

      Mass

    • D. 

      Distance

  • 8. 
    Students performed an experiment to record the temperatures on the inside of 3 different colored cars. The students made sure to record at the same time of the day.  They also made sure the cars they chose were the same size and had the same type of interior.  Why did the students keep some variables the same?
    • A. 

      The students wanted to be safe

    • B. 

      The students wanted to make sure they had enough time to perform the experiment

    • C. 

      The students wanted to make sure the experiment was valid

    • D. 

      The students wanted to use the correct thermometer.

  • 9. 
    Plant growth was measured every day. Which one is the independent variable?
    • A. 

      Plant growth

    • B. 

      Every day

    • C. 

      Height of plant

  • 10. 
    The farmer had a problem with his corn crop.  Every year, he is losing money because his crop is not marketable.  He chooses 3 different insecticides to test on a section of his corn crop.  He chose the insecticides because he thinks the insects are destroying his crop.  During the experiment he will measure the quality of his crop. What is the independent variable?
    • A. 

      Corn crop

    • B. 

      Amount of money

    • C. 

      Different insecticides

    • D. 

      Crop quality

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