General Science Practice Test Flashcards

Which planet in our solar system has the most moons?

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.

What type of rock forms from the cooling and solidification of magma or lava?

Answer: Igneous

Igneous rocks form when molten rock (magma underground or lava at the surface) cools and solidifies; granite and basalt are common examples.

What is the function of red blood cells?

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.

Which of the following best defines acceleration?

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/s²).

What is the atomic number of an element determined by?

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.

Sound travels fastest through which medium?

Answer: Steel

Sound travels fastest through solids like steel because tightly packed particles transmit vibrations more efficiently than gases or liquids.

What is the main function of the large intestine in the digestive system?

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.