ASVAB General Science Practice Test 427197

Questions 5
Topics Atom, Heart, Liquid, Species, Water Cycle

Study Guide

Atom

An atom is the smallest component of an element that still retains the properties of the element.

Heart

The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.

Liquid

In the liquid state, molecules flow freely around each other and exist at a higher temperature range than the same substance in a solid state. Liquids maintain a constant volume but their shape depends upon the shape of their container.

Species

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

Water Cycle

The water (hydrologic) cycle describes the movement of water from Earth through the atmosphere and back to Earth. The cycle starts when water evaporates into a gas from bodies of water like rivers, lakes and oceans or transpirates from the leaves of plants.