Measure twice. Guess once.
Units and quantities that nearly match.
Ten questions, with the answers explained. Try them in your head, then open each answer when you're ready.
Play this quiz →QUESTION 1 / 10
A kilometer is longer than a mile.
- True
- False
Show answer & explanation+
False
A mile is about 1.609 kilometers, so it is longer.
QUESTION 2 / 10
A liter is a unit of volume.
- True
- False
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True
A liter measures volume and equals one cubic decimeter.
QUESTION 3 / 10
A kilogram is a unit of mass.
- True
- False
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True
The kilogram is the SI base unit of mass.
QUESTION 4 / 10
A right angle is half a full turn.
- True
- False
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False
A right angle is a quarter turn: 90 degrees out of 360.
QUESTION 5 / 10
A centimeter is one hundredth of a meter.
- True
- False
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True
Centi- indicates a factor of one hundredth.
QUESTION 6 / 10
One square meter equals one hundred square centimeters.
- True
- False
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False
It equals ten thousand square centimeters because both dimensions are multiplied by one hundred.
QUESTION 7 / 10
A dozen always means twenty.
- True
- False
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False
A dozen is twelve. A score is twenty.
QUESTION 8 / 10
An hour contains 3,600 seconds.
- True
- False
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True
Sixty minutes times sixty seconds gives 3,600 seconds.
QUESTION 9 / 10
Speed and distance are the same physical quantity.
- True
- False
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False
Speed is distance traveled per unit of time.
QUESTION 10 / 10
A millimeter is smaller than a centimeter.
- True
- False
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True
Ten millimeters make one centimeter.