Units and Measurement Quiz

What is the definition of a unit in measurement?

What are the base units for length, mass, and time in the CGS system?

• centimetre, gram, second

• foot, pound, second

• metre, kilogram, second

What is the SI unit of length?

• metre

• centimetre

• foot

What is the SI unit of mass?

• gram

• kilogram

• pound

What is the SI unit of time?

• minute

• second

• hour

What is the significance of significant figures in measurement?

What are the rules for determining significant figures?

What are the total surface area and the volume of a cube measured to be 7.203 m to appropriate significant figures?

Express the density of a substance that occupies 1.2 cm³ and has a mass of 5.74 g by keeping the significant figures in view.

What is the relative error in 1.02 g?

• ± 1%

• ± 0.1%

• ± 0.01 g

• ± 0.1 g