GED® Science: Full-Length Practice Exam (Level 1 - Foundational) › 2. Reading the Source & Scientific Reasoning
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2. Reading the Source & Scientific Reasoning

GED® Science: Full-Length Practice Exam (Level 1 - Foundational) · preview lesson

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GED® Science is less about memorizing facts and more about reasoning from evidence. The most useful habits:

  • Use the source. A graph, table, or diagram usually contains the answer -- read the title, the labels, and the units first.
  • Correlation is not causation. Two things rising together doesn't prove one caused the other.
  • A fair test changes one thing. In an experiment, the independent variable is what you change; the controlled variables are kept the same so the test is fair.
  • Energy and matter are conserved. They are not created or destroyed, only transformed or transferred.
A Fair Test: The Three Kinds of Variables Independent what YOU change (the cause) Dependent what you MEASURE (the result) affects Controlled Variables everything else kept exactly the SAME so the change is a fair comparison
In a fair test, only the variable being studied changes; everything else stays the same.
Quick Check

In an experiment, what do we call the variables that are deliberately kept the same?

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