About General Science
The General Science section evaluates your understanding of fundamental scientific concepts across multiple disciplines. This includes life science (biology, ecology, human anatomy), physical science (chemistry, physics), and earth and space science (geology, meteorology, astronomy). On the CAT-ASVAB, you will have approximately 8 minutes to answer 15 questions. While this section does not directly contribute to your AFQT score, it is a critical component of several composite line scores including ST (Skilled Technical), EL (Electronics), and GM (General Maintenance), which determine eligibility for many technical military jobs.
Topics Covered
Sample Questions
Study Tips for General Science
Focus on Breadth, Not Depth
The GS section covers many topics at a surface level. Focus on understanding key concepts across all sciences rather than deep-diving into one area.
Use Flashcards for Terminology
Many GS questions test vocabulary and definitions. Create flashcards for scientific terms, especially in biology and chemistry.
Review the Periodic Table Basics
Know the common elements, their symbols, and basic properties. You don't need to memorize the entire table, but understanding groups and periods helps.