What is the prefix for 10^3 in the metric system?

The prefix for 10^3 in the metric system is "Kilo." In the International System of Units (SI), prefixes are used to denote specific powers of ten. Kilo, which comes from the Greek word "khilioi" meaning a thousand, specifically indicates a factor of one thousand or 10^3.

This is commonly used in various contexts, such as kilometers (km) for distance, where one kilometer is equal to 1,000 meters, and kilograms (kg) for mass, where one kilogram equals 1,000 grams. Understanding prefixes like kilo is crucial in scientific calculations and measurements, as they allow for easier expression of large or small quantities without the necessity of writing out long numbers.

In contrast, the other prefixes mentioned represent different powers of ten: "Mega" corresponds to 10^6 (one million), "Giga" represents 10^9 (one billion), and "Deci" refers to 10^-1 (one-tenth). Each prefix has its specific applications, and knowing them helps in accurately interpreting and communicating measurements in scientific contexts.