ASVAB General Science Practice Test 197414

Questions 5
Topics Biosphere, Electromagnetic Spectrum, Liver, Proton, Species

Study Guide

Biosphere

The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).

Electromagnetic Spectrum

The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.

Liver

The liver produces bile which emulsifies (separates) fat.

Proton

A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.

Species

The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.