CMS SI Units & Prefixes 3

Question 1

Which unit is NOT an SI base unit?

Accepted Answer

Newton

Answer

The newton is a derived unit (kg·m/s²), not a base unit; it is derived from three SI base units.

Question 2

What is the SI prefix for 10⁻¹²?

Accepted Answer

Pico

Answer

Pico (p) represents 10⁻¹², used in units like picofarads in electronics.

Question 3

The joule (J) is the SI unit of energy, equivalent to:

Accepted Answer

kg·m²/s²

Answer

One joule equals one kilogram times meters squared per second squared (kg·m²/s²).

Question 4

Which prefix represents 10¹⁵?

Accepted Answer

Peta

Answer

Peta (P) represents 10¹⁵, as in petabytes of data storage.

Question 5

The SI unit for plane angle is:

Accepted Answer

Radian

Answer

The radian (rad) is the SI derived unit for plane angle, defined as the angle subtended by an arc equal in length to the radius.

CMS - Certified Metrication Specialist Practice Test