Units: Base and Derived Units

Is this an SI base unit: second (s)?

• Yes

• No

Is this an SI base unit: kilometre (km)?

• Yes

• No

The SI unit for measuring mass is the
 __?__.

• meter (m)
• liter (L)
• cubic meter (m³)
• kilogram (kg)

What SI unit is used to measure electric current?

• seconds
• amperes
• Kelvin
• mole

What is base quantities ?

• the branch of science concerned with the nature and properties of matter and energy
• the branch of science that deals with the identification of the substances of which matter is composed
• physical quantities that cannot be defined in terms of other physical quantities

What is derived quantities ?

• a tendency to do nothing or to remain unchanged.
• combination of two or more base quantities
• the quantity of motion of a moving body, measured as a product of its mass and velocity.

Tags

NGSS.HS-PS2-2

Which of the following quantity is base quantity ?

• voltage
• electric current
• electric energy
• electric power

Which of the following pairs of physical quantity and SI unit is correct ?

• Mass - SI unit : Gram
• Time - SI unit : Hour
• Electric current - SI unit : Volt
• Temperature - SI unit : Kelvin

What is the SI unit of weight?

• kilograms

• grams

• newtons

• kg

What is the unit of DENSITY

• m/s

• m/s²

• kg/m³

• Newton