Understanding Units and the Metric System

Why might someone prefer to change a unit of measurement?

• To use a more familiar unit

• To make calculations easier

• All of the above

• To make the number smaller

What is the metric prefix for a million units?

• Kilo

• Mega

• Tera

• Giga

Which of the following countries does NOT use the International System of Units?

• Germany

• Japan

• France

• United States

What is the metric prefix for a thousand units?

• Deci

• Centi

• Milli

• Kilo

What is the SI unit for velocity?

• Meter per second

• Feet per second

• Kilometer per hour

• Miles per hour

How is the unit of force, the Newton, defined in terms of fundamental units?

• Kilogram meter per second squared

• Kilogram meter per second

• Meter per second squared

• Kilogram per second squared

Which of the following is NOT a fundamental SI unit?

• Second

• Pascal

• Meter

• Coulomb

Which of the following is a unit of pressure?

• Pascal

• Joule

• Newton

• Watt

What is the unit of electric current in the SI system?

• Volt

• Coulomb

• Ampere

• Watt

Which SI base unit is related to the human eye's response to light?

• Mole

• Candela

• Kelvin

• Ampere