asvab SCIENCE
asvab SCIENCE
ASVAB General Science Practice Test
Practice with real ASVAB General Science questions and step-by-step video lessons for biology, chemistry, physics, and earth science.
19+
Video Lessons
547+
Practice Problems
4.9/5 Rating
How to Use StudyPug for ASVAB General Science
A 4-step method built around the GS subtest
1
Take a Diagnostic
Find your science gaps across all four GS domains
2
Watch Video Lessons
Focused videos on biology, chemistry, physics, and earth science
3
Practice Problems
ASVAB-style science questions with instant step-by-step feedback
4
Take Mock Exam
Full GS-style timed practice set
What's on the ASVAB General Science Subtest
Every topic type tested on the GS subtest
Life Science — Biology
- Cell structure, function, and division
- Genetics, DNA, and heredity
- Human body systems — circulatory, respiratory, nervous
- Ecosystems, food webs, and classification
Physical Science — Chemistry
- Atoms, elements, and the periodic table
- Chemical bonds and molecular structure
- Chemical reactions, acids, and bases
- States of matter and phase changes
Physical Science — Physics
- Force, motion, and Newton's laws
- Energy types — kinetic, potential, thermal
- Waves, sound, and light
- Electricity and magnetism basics
Earth & Space Science
- Weather patterns and the atmosphere
- Rock cycle, plate tectonics, and geology
- The water cycle and ocean systems
- Solar system, stars, and astronomical phenomena
ASVAB General Science Study Guide
Start anywhere, or follow the subtest-aligned order
Help
2. Zoology
3. Anatomy and physiology
3. Ecology
4. Cell biology
5. Astronomy
6. Geology
7. Meteorology
8. Force and motion
9. Energy
10. Atomic structure
11. Chemical reactions
12. States of matter
13 Chapters · 62 Topics · 19 Videos
Everything You Need to Know About ASVAB General Science
Format and scoring, so there are no surprises on test day.
Total Duration
12 min
CAT-ASVAB subtest time limit
Standard Score
30-70
Average is 50; feeds job line scores
Number of Questions
15
Scored questions (CAT-ASVAB)
Cost
Free
Administered by the military at MEPS/MET sites
About the ASVAB General Science subtest
General Science (GS) is one of the ten subtests on the ASVAB — the U.S. military's enlistment aptitude test. It measures your knowledge of physical and biological sciences. General Science isn't part of your AFQT, but it feeds the line (composite) scores the services use to qualify you for technical and medical jobs. This free ASVAB General Science practice test mirrors the real subtest, with a step-by-step video solution for every question so a wrong answer turns into a lesson.
What does ASVAB General Science cover?
On the CAT-ASVAB, General Science is 15 scored questions in 12 minutes, drawn from physical and biological sciences. Expect life science (biology, the human body, ecology), physical science (basic physics and chemistry), and earth and space science. StudyPug covers all of these with adaptive practice and video lessons.
Is ASVAB General Science hard, and where do test-takers struggle most?
General Science rewards recognition over heavy calculation, so the real challenge is breadth — a little of everything in just 12 minutes. Most test-takers have a couple of weak fields (often chemistry or physics). A quick diagnostic finds them, then targeted practice fills them in.
How is ASVAB General Science scored?
Each ASVAB subtest is reported as a Standard Score, a scale where the average is 50 and most scores fall between 30 and 70. General Science is not one of the four AFQT subtests, but its Standard Score feeds several job-qualifying line scores. Our practice tracks your readiness by topic.
How StudyPug ASVAB prep works
Take a diagnostic, watch focused video lessons on your weak topics, practice with instant step-by-step feedback, then take a full-length mock. 92% of students improve their grades with StudyPug.
General Science — FAQ
We've got answers to some popular questions.
Do I need a subscription to practice General Science?
You can create an account and start working General Science practice questions with step-by-step solutions right away. A StudyPug plan opens the full diagnostics, mock exams and study plans for StudyPug's General Science prep.
What does General Science actually test?
General Science is broad science recall across biology, chemistry, physics and earth science, at about a high school survey level. StudyPug covers it in the topic groups shown on this page: Life Science — Biology (30%), Physical Science — Chemistry (25%), Physical Science — Physics (25%), and Earth & Space Science (20%).
What score do I need on General Science?
General Science is not part of your AFQT, so it has no enlistment minimum of its own. It comes back as a standard score, where 50 is the average of the reference group, and it feeds the service composites that gate technical jobs — on the Air Force's MAGE composites, General Science is part of Electronics (AR + EI + GS + MK). Ask your recruiter which composites the job you want is scored on.
Is the computer ASVAB the same as the paper version?
Same content, different length and clock. On the CAT-ASVAB, General Science is 15 scored questions with 12 minutes; on the paper version it is 25 questions in 11 minutes. The CAT version is adaptive, and most examinees also get unscored tryout questions in a few subtests, which raises that subtest's time limit. Prepare the same way for either format.
Reviewed by the StudyPug team
Last updated Aug 13, 2026
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