Units of measurment

How many base SI units are ther?

• 5

• 7

• 8

• 9

What is the aim or reasoning behind SI units?

What are the 7 base SI units?

What is 0 Kelvin in degrees Celsius?

• 273

• -173

• 173

• -273

List 3 derived units used in plumbing

M² is the unit for:

• Volume

• Velocity

• Density

• Area

What is the area of a floor that measures 6.3m x 4.5m?

• 28.35m²

• 38.35m²

• 35.83m²

• 53.81m²

What unit is used for volume and how do you work it out?

At what temperature is water at it's most dense?

• 5^oc

• 8^oc

• 4^oc

• 10^oc

How much does expand by when heated?

• 5%

• 10%

• 4%

• 8%