Understanding SI Base Units

What is the SI base unit for length?

• Kilometre

• Metre

• Mile

• Foot

Which SI base unit is used to measure time?

• Minute

• Hour

• Second

• Day

What is the SI base unit for the amount of substance?

• Mole

• Gram

• Kilogram

• Litre

Which of the following is the SI base unit for electric current?

• Volt

• Ampere

• Ohm

• Watt

What is the SI base unit for temperature?

• Celsius

• Fahrenheit

• Kelvin

• Rankine

Which SI base unit is used to measure luminous intensity?

• Lumen

• Lux

• Candela

• Watt

What is the SI base unit for mass?

• Gram

• Pound

• Ounce

• Kilogram

If a room is 5 metres long, what is its length in feet? (1 metre = 3.28084 feet)

• 16.4 feet

• 15.2 feet

• 16.2 feet

• 15.4 feet

Convert 20 miles to kilometres. (1 mile = 1.60934 kilometres)

• 32.2 km

• 30.2 km

• 31.2 km

• 33.2 km

What is the equivalent of 25°C in Kelvin? (K = °C + 273.15)

• 298.15 K

• 295.15 K

• 300.15 K

• 299.15 K