3 Written Questions

1. well tested explanation that unifies a broad range of observations
2. the variable that is measured or observed in an experiment. It is also the variable that is represented on the y axis of a graph
3. a series of steps that scientists use to answer questions and solve problems

3 Multiple Choice Questions

1. a rule that describes, but doesn't explain, a pattern in nature and predicts what will happen under specific conditions.
   1. constant
   2. scientific method
   3. scientific law
   4. control
2. an explanation that is based on prior scientific research or observations and that can be tested
   1. theory
   2. hypothesis
   3. constant
   4. control
3. variable that is not changed in an experiment
   1. control
   2. hypothesis
   3. theory
   4. constant

2 True/False Questions

1. control → the standard used for comparison in an experiment ("normal conditions" to compare the experimental group against). The situation in which the independent variable is not applied.

   True        False

2. independent variable → variable that is changed or manipulated in an experiment. It is also the variable that is represented on the x axis of a graph

   True        False