What does the metric prefix 'kilo' mean?
AnswerOne thousand
A kilometer is 1,000 meters and a kilogram is 1,000 grams.
Science · Facts & stats
10x facts & stats
7 fact-checked facts about powers of ten, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What does the metric prefix 'milli' mean?
AnswerOne thousandth
A millimeter is one thousandth of a meter.
Going deeper
What is a googol?
Answer10 to the power of 100
A googol is 1 followed by 100 zeros; there is no largest number.
What is 10 to the power of 0?
Answer1
Any nonzero number raised to the power of 0 equals 1.
A difference of one order of magnitude is a factor of about what?
Answer10
Each order of magnitude is one power of ten, so two orders is a factor of 100.
Expert level
What power of ten does the prefix 'nano' represent?
Answer10⁻⁹
Nano means one billionth; a nanometer is 10⁻⁹ meters.
On the Richter scale, each whole-number step up means measured wave amplitude grows by what factor?
Answer10 times
The Richter scale is logarithmic: each whole number is a tenfold increase in recorded amplitude.
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