Understanding Measurements in Science

What is the SI unit for length?

• meter

• kilometer

• millimeter

• centimeter

Which of the following is a prefix in the SI system?

• centi-

• nano-

• kilo-

• mega-

What does precision refer to in measurements?

• Precision measures the average of measurements.

• Precision refers to the range of measurements.

• Precision refers to the consistency of measurements.

• Precision indicates the accuracy of measurements.

What is the difference between accuracy and precision?

• Accuracy is about correctness; precision is about consistency.

• Accuracy is subjective; precision is objective.

• Accuracy is about speed; precision is about detail.

• Accuracy measures the average; precision measures the range.

Which of the following is the correct order of SI prefixes from smallest to largest?

• kilo, mega, giga, tera, peta, exa, zetta, yotta, yocto, zepto, atto, femto, pico, nano, micro, milli, centi, deci

• pico, nano, micro, milli, centi, deci, deca, hecto, kilo, mega, giga, tera, peta, exa, zetta, yotta, yocto, zepto, atto, femto

• deci, centi, milli, micro, nano, pico, femto, atto, zepto, yocto, kilo, mega, giga, tera, peta, exa, zetta, yotta

• yocto, zepto, atto, femto, pico, nano, micro, milli, centi, deci, deca, hecto, kilo, mega, giga, tera, peta, exa, zetta, yotta

What is the measurement of 1 kilometer in meters?

• 1500 meters

• 1 meter

• 500 meters

• 1000 meters

Which tool is commonly used to measure length?

• Compass

• Protractor

• Caliper

• Ruler or tape measure

What is the SI unit for mass?

• ounce

• kilogram

• gram

• pound

How many centimeters are in a meter?

• 75

• 100

• 200

• 50

What does the prefix 'milli-' represent in the SI system?

• 1/100

• 1/1000 or 10^-3

• 1/10

• 10^-2