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GED Testing Service


(90 minutes)


The GED® Science Test focuses on the fundamentals of science reasoning, striking a balance of deeper conceptual understanding, procedural skill and fluency, and the ability to apply these fundamentals in realistic situations. 


The Science Test also focuses on three major content domains:

  1. Life science
  2. Physical science
  3. Earth and space science

There are several different item types are used in the test, including multiple choice, short answer, drag-and-drop, hot spot, and fill-in-the-blank. 

Given these priorities, the GED® Science Test adheres to the following parameters:

  • Approximately 40 percent of the test focuses on life science, roughly 40 percent focuses on physical science, and approximately 20 percent focuses on Earth and space science.
  • Approximately 50 percent of the items are presented in item scenarios, in which a single stimulus (which may be textual, graphic or a combination of both) serves to inform two to three items. The rest of the items are discrete.




The Science test focuses on the three content domains of life science, physical science, and Earth and space science can pertain to one of these two themes, but content that falls outside the spheres of these themes do not appear on the GED® Science Test.

  • Human Health and Living Systems, the first focusing theme, pertains to material that is vital for the health and safety of all living things on the planet. Topics explored in this area of focus include the physical body and characteristics of humans and other living things. System of living organisms and related topics (e.g. diseases, evolution, and heredity) are also covered. This crosscutting concept also examines the mechanisms for how the human body works on chemical and physical levels. Within the domain of Earth and space science, topics are focused on how the environment affects living things and human society, as well as on how humans and other organisms affect the environment.
  • Energy and Related Systems, the second focusing theme, deals with a fundamental part of the universe. Topics in this area of focus cover sources of energy, transformations of energy, and uses of energy. Within the domain of life science, this theme is reflected in content exploring how energy flows through organisms and ecosystems. Similarly, the Earth’s geochemical systems are touched upon in Earth and space science. Topics related to how humans gain energy in their bodies and the results of the use of that energy are also relevant to this theme. 


Here is a sample question of what you may see: 



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