IB Physics Measurement and uncertainties: Units Part 1

This video tutorial covers the importance of using correct units in physics, focusing on SI and non-SI units. It explains the seven fundamental SI units and derived units, highlighting their significance in scientific measurements. The tutorial also discusses temperature units, conversion methods, and the use of non-SI units in physics. The lesson concludes with a recap of key concepts and the importance of adhering to the SI unit system.

Why is it crucial to use the correct units in scientific measurements?

• To ensure calculations are easier

• To comply with legal standards

• To make measurements look more professional

• To avoid misunderstandings and errors

Which of the following is NOT a fundamental SI unit?

• Liter

• Candela

• Kilogram

• Meter

What is the derived SI unit for frequency?

• Watt

• Newton

• Hertz

• Joule

Why should calculations in physics be performed in Kelvin?

• Many equations require Kelvin for accuracy

• Kelvin is the most commonly used unit

• Kelvin is the oldest temperature scale

• Kelvin is easier to understand

How do you convert a temperature from Celsius to Kelvin?

• Add 100

• Subtract 273

• Add 273

• Multiply by 1.8

Which of the following is a non-SI unit that is still used in physics?

• Inch

• Liter

• Pound

• Foot

Why should imperial units be avoided in physics calculations?

• They are not recognized internationally

• They can lead to incorrect results

• They are not precise enough

• They are outdated