ASVAB General Science Practice Test 4 ā Questions and Answers
Question 1: Which planet in our solar system has the most moons?
- Jupiter
- Saturn (Correct answer)
- Uranus
- Neptune
Correct answer: Saturn
Saturn holds the record for the most confirmed moons in our solar system, surpassing Jupiter with over 140 known moons as of recent discoveries.
Question 2: What type of rock forms from the cooling and solidification of magma or lava?
- Sedimentary
- Metamorphic
- Igneous (Correct answer)
- Limestone
Correct answer: Igneous
Igneous rocks form when molten rock (magma underground or lava at the surface) cools and solidifies; granite and basalt are common examples.
Question 3: What is the function of red blood cells?
- Fight infection
- Carry oxygen throughout the body (Correct answer)
- Regulate blood pressure
- Produce antibodies
Correct answer: Carry oxygen throughout the body
Red blood cells contain hemoglobin, an iron-containing protein that binds oxygen in the lungs and transports it to tissues throughout the body.
Question 4: Which of the following best defines acceleration?
- Speed in a given direction
- Total distance divided by total time
- Rate of change of velocity over time (Correct answer)
- Force times mass
Correct answer: Rate of change of velocity over time
Acceleration is defined as the rate at which an object's velocity changes over time, measured in meters per second squared (m/sĀ²).
Question 5: What is the atomic number of an element determined by?
- Number of neutrons
- Number of electrons only
- Number of protons (Correct answer)
- Mass of the nucleus
Correct answer: Number of protons
The atomic number equals the number of protons in an atom's nucleus and uniquely identifies the element on the periodic table.
Question 6: Sound travels fastest through which medium?
- Vacuum
- Air at room temperature
- Water
- Steel (Correct answer)
Correct answer: Steel
Sound travels fastest through solids like steel because tightly packed particles transmit vibrations more efficiently than gases or liquids.
Question 7: What is the main function of the large intestine in the digestive system?
- Produce digestive enzymes
- Absorb nutrients from food
- Absorb water and form solid waste (Correct answer)
- Break down fats with bile
Correct answer: Absorb water and form solid waste
The large intestine primarily absorbs water and electrolytes from indigestible food matter, concentrating it into feces for elimination.
ASVAB General Science Practice Test 4
Which planet in our solar system has the most moons?