General Science Vocabulary Review for Grade Eight

These flashcards cover key vocabulary terms related to general science, particularly focusing on concepts significant for grade eight students in preparation for their examination.

Indigenous unit of length measurement

Traditional methods of measuring length that originate from a culture, such as hand span or cubit.

Fundamental physical quantities

Basic quantities used in physics which are independent and can be measured, such as length, mass, time, etc.

SI unit

International System of Units; a standardized system for measuring physical quantities.

Derived physical quantity

Quantities that are derived from the fundamental quantities, such as area, volume, and speed.

Scientific method

A systematic process for conducting scientific research and experimentation.

Accuracy

The degree to which a measured value reflects the true value.

Precision

The consistency of repeated measurements, regardless of their accuracy.

Diatomic molecule

Molecules composed of two atoms, which may be of the same or different elements.

Inorganic compound

Compound that typically lacks carbon-hydrogen bonds and is derived from mineral sources.

Neutralization reaction

A chemical reaction in which an acid and a base react to form water and a salt.

Skeletal muscles

Muscles that are under voluntary control and are responsible for movement of the bones.

Homeostasis

The ability of an organism to maintain stable internal conditions despite external changes.

Corrosive acid

An acid that can damage living tissues or materials upon contact.

Respiratory system

The system responsible for the exchange of oxygen and carbon dioxide in the body.

Gamete

A reproductive cell (sperm or egg) that fuses during fertilization to form a zygote.

Zygote

The cell formed by the fusion of two gametes; the first stage of development of an organism.