SI Units and Measurements Quiz

What are the base SI units for length, mass, and time?

• mm, lb, hr

• cm, g, h

• m, kg, s

• km, ton, min

Which of the following is NOT a SI Unit?

• Seconds

• Miles

• Kilogram

• Meter

Convert 5000 meters to kilometers.

• 50 kilometers

• 5 kilometers

• 0.5 kilometers

• 500 kilometers

Convert 2.5 kilograms to grams.

• 2000 grams

• 2500 grams

• 2.5 grams

• 25 grams

What are the prefixes used in SI units for 10^3, 10^-3, and 10^6?

• kilo, milli, mega

• hecto, nano, peta

• micro, deci, tera

• centi, deca, giga

What is the difference between scalar and vector quantities?

• Scalar quantities have only magnitude, while vector quantities have both magnitude and direction.

• Scalar quantities have both magnitude and direction, while vector quantities have only magnitude.

• Scalar quantities have only magnitude, while vector quantities have only speed.

• Scalar quantities have only direction, while vector quantities have only magnitude.

Give an example of a scalar quantity and a vector quantity.

• Scalar quantity: Volume, Vector quantity: Acceleration

• Scalar quantity: Mass, Vector quantity: Force

• Scalar quantity: Temperature, Vector quantity: Velocity

• Scalar quantity: Speed, Vector quantity: Distance

Which one of the following is a derived quantity?

• Length
• Velocity
• Mass
• Time

Which quantity is a base quantity?

• area

• speed

• temperature

• weight

A length of a living thing is 70 nm. What is the length expressed in metres (m)?

• 70 x 10⁹ m

• 70 x 10⁶ m

• 70 x 10^-6 m

• 70 x 10^-9 m