Base facts for kids

A base is a very common word with many different meanings! It can be used as a noun (a thing or place) or as a verb (an action). Think of it as the starting point, the bottom, or the main part of something.

What "Base" Means as a Noun

As a noun, "base" often refers to a foundation, a starting point, or a main location.

In Math and Science

Base in Numbers

In mathematics, a "base" (also called a radix) tells you how many different digits are used in a number system. For example, our everyday number system is called base 10 because it uses ten digits (0, 1, 2, 3, 4, 5, 6, 7, 8, 9). Computers often use base 2, which only uses two digits (0 and 1).

Base in Shapes

In geometry, the "base" of a shape is usually its bottom side or face. For example, the bottom side of a triangle is called its base.

Base in Chemistry

In chemistry, a "base" is a type of chemical that is the "opposite" of an acid. Bases often feel slippery and can neutralize acids. A common type of base is an alkali, like baking soda.

Base as a Place

Home Base for People and Things

A "base" can be a special area that has shelter, equipment, and resources. It's like a home away from home, especially in tough environments. For example, a Moon base would be a place where astronauts could live and work on the Moon. Scientists working in Antarctica also live in special bases.

Military Bases

A Military base is a secure place that provides shelter, military equipment, and personnel for an army, navy, or air force. It's where soldiers live, train, and keep their gear.

Base in Buildings and Sports

Base in Architecture

In architecture, the "base" is the lowest part of a building or structure. It's the foundation that supports everything above it. Columns in old buildings also have a base, which is the bottom part that sits on the ground. Sometimes, a statue or other important item sits on a "pedestal," which is also called a base.

Base in Baseball

In Baseball, a "base" is one of the four points on the field that a player must touch to score a run. There are three canvas bags (first base, second base, third base) and home plate.

What "Base" Means as a Verb

When "base" is used as a verb, it usually means that something is built or developed from a certain idea or starting point.

Based On

If something is "based on" an idea, it means it was made or developed from those ideas. For example, a movie might be "based on" a book, meaning the story for the movie came from the book.

BASE Jumping

In BASE jumping, "BASE" is actually an acronym (a word made from the first letters of other words). It stands for Building, Antenna, Span (like a bridge), and Earth (like a cliff). BASE jumping is an extreme sport where people jump with a parachute from these fixed places.

Images for kids

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  A robot, which might be based on a human design.