Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

16 Cards in this Set

  • Front
  • Back
What is a unit?
A unique name we assign to measures of a quantity.
What is a standard?
Something we compare a measure of each physical quantity in its own units.
What is a base standard?
The internationally agreed upon standards which all other physical measures are based upon.
What is the International System of Units (SI)?
Seven internationally agreed upon base quantities, thereby forming the basis of the International System of Units, abbreviated SI from its French name and popularly known as the metric system.
What is a conversion factor?
A ratio of units equal to 1.
What is a meter?
The meter is the length of the path traveled by light in a vacuum during a time interval of 1/299792458 of a second.
What is a kilogram?
A platinum–iridium cylinder kept at the International Bureau of Weights and Measures near Paris and assigned, by international agreement, a mass of 1 kilogram.
What is an atomic mass unit?
1.6605402 x 10^-27 kg (the mass of one hydrogen atom.
What are the three base units of SI?
1. length: m
2. mass: kg
3. time: s
What does the prefix "kilo-" mean?
What does the prefix "mega-" mean?
What does the prefix "centi-" mean?
What does the prefix "milli-" mean?
What does the prefix "micro-" mean?
What does the prefix "nano-" mean?
What does the prefix "pico-" mean?