General Science Practice Test Flashcards

Which type of electromagnetic radiation has the highest frequency?

Answer: Gamma rays

Gamma rays have the highest frequency (and shortest wavelength) in the electromagnetic spectrum, carrying the most energy per photon.

What principle states that matter cannot be created or destroyed in a chemical reaction?

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.

Which part of the brain controls balance, coordination, and fine motor movements?

Answer: Cerebellum

The cerebellum coordinates voluntary muscle movements, maintains posture and balance, and fine-tunes motor actions initiated by the cerebrum.

In which direction does current flow in a conventional electric circuit?

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.

What term describes the tendency of a liquid to resist an increase in its surface area?

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.

Which of the following is NOT a renewable energy source?

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.

What is the genetic material found in the nucleus of a eukaryotic cell?

Answer: DNA

Deoxyribonucleic acid (DNA) is the hereditary material housed in the nucleus, encoding the genetic instructions for all cellular functions and traits.