Quiz 2

A measurement is a comparison between an unknown

• another unknown quantity

• a standard

• a prediction

• a estimate

Which describes how close a measurement is to the true value?

• significance

• precision

• accuracy

• reproducibility

Which describes a measurement that is repeatable and consistent?

• high precision

• high accuracy and precision

• low precision

• high accuracy

• low accuracy

Which is the term for the effect that occurs when a measurement is taken from an angle?

• scattering

• parallax

• diffusion

• refraction

Which of these is an SI base unit

• gram

• hour

• meter

• degree celsius

Which is the prefix used to signify a multiplier of 0.001 for SI units?

• kilo-

• centi-

• micro-

• milli-

A length is measured to be 19.57 cm. Which is the uncertain digit in this measurement?

• 1

• 5

• 7

• 9

A car travels at a speed of 100.0 km/h for 0.022 h. How far does the car travel, to the correct number of significant digits?

• 2.2 km

• 2.200 km

• 2.2

• 2 km