ASVAB General Science Practice Test 5 — Questions and Answers
Question 1: Which type of electromagnetic radiation has the highest frequency?
- Radio waves
- Visible light
- X-rays
- Gamma rays (Correct answer)
Correct answer: Gamma rays
Gamma rays have the highest frequency (and shortest wavelength) in the electromagnetic spectrum, carrying the most energy per photon.
Question 2: What principle states that matter cannot be created or destroyed in a chemical reaction?
- Law of gravity
- Law of conservation of mass (Correct answer)
- Avogadro's law
- Boyle's law
Correct answer: Law of conservation of mass
The law of conservation of mass states that the total mass of reactants equals the total mass of products in any chemical reaction.
Question 3: Which part of the brain controls balance, coordination, and fine motor movements?
- Cerebrum
- Medulla oblongata
- Hypothalamus
- Cerebellum (Correct answer)
Correct answer: Cerebellum
The cerebellum coordinates voluntary muscle movements, maintains posture and balance, and fine-tunes motor actions initiated by the cerebrum.
Question 4: In which direction does current flow in a conventional electric circuit?
- From negative to positive terminal
- From positive to negative terminal (Correct answer)
- In both directions simultaneously
- It depends on the voltage
Correct answer: From positive to negative terminal
By convention, current flows from the positive terminal through the external circuit to the negative terminal, opposite to the actual electron flow.
Question 5: What term describes the tendency of a liquid to resist an increase in its surface area?
- Viscosity
- Density
- Surface tension (Correct answer)
- Capillarity
Correct answer: Surface tension
Surface tension results from cohesive forces between liquid molecules at the surface, causing the liquid to minimize its surface area and behave like a stretched elastic film.
Question 6: Which of the following is NOT a renewable energy source?
- Solar energy
- Wind energy
- Natural gas (Correct answer)
- Hydroelectric energy
Correct answer: Natural gas
Natural gas is a fossil fuel formed over millions of years from ancient organic matter and is consumed far faster than it is replenished, making it non-renewable.
Question 7: What is the genetic material found in the nucleus of a eukaryotic cell?
- RNA
- Protein
- DNA (Correct answer)
- Glucose
Correct answer: DNA
Deoxyribonucleic acid (DNA) is the hereditary material housed in the nucleus, encoding the genetic instructions for all cellular functions and traits.
ASVAB General Science Practice Test 5
Which type of electromagnetic radiation has the highest frequency?