To enlist in the United States armed forces, you must take an entrance examination called the Armed Services Vocational Aptitude Battery (ASVAB). The ASVAB test helps the military determine your qualifications for enlistment. The ASVAB first appeared in 1968. By 1976 it was required by all branches of the military. The test was completely redone in 2002.
You’ll need to bring valid identification (photo ID, SSN card) to be admitted into the ASVAB testing room. Arrive on time— you’ll be turned away and required to reschedule if you are late. Your recruiter may give you a ride to and from the session, but he/she is not permitted in the testing room. You will not need to bring a calculator for the test.
Tomando el ASVAB no le compromete a nada. Un reclutador militar puede ponerse en contacto con usted después de tomar el ASVAB . El ASVAB puede ayudar a determinar sus propios intereses y aptitudes , incluso si usted no está planeando entrar en el ejército o está indeciso . Le puede ayudar a elegir los cursos para la universidad y tomar sus decisiones de carrera personal .
The scores from the other tests are used to determine what type of specialty you might be best suited for.  These "composite" scores (also known as line scores, MOS scores, or aptitude area scores) are calculated by adding together combinations of the different sub test standard scores. These composite scores are then used to determine which different military jobs (aka Military Occupational Specialties or MOS) may be the best fit for you.  Each branch of the military will have their own approach to these composite scores.
Las Ciencias generales evalúan la capacidad de responder preguntas sobre una variedad de temas científicos que se enseñan en la mayoría de las escuelas secundarias. Los temas de biología abarcan botánica, zoología, anatomía y fisiología y ecología. Los temas de las ciencias de la tierra y el espacio están basados en astronomía, geología, meteorología y oceanografía. Los temas de las ciencias físicas miden la fuerza y la mecánica del movimiento, la energía, los líquidos, la estructura atómica y la química.
The various armed forces adopted all of those aspects in 1976. At that point in time, the test was in its written form rather than today’s more common form (computerized test format). The written form covers all of the previously mentioned areas as well, which is why both forms are still available. All-in-all that answers the question concerning the intention of the test.