Measuring Physical Quantities

Measuring Mass  

Measuring Time 

Measuring Temperature 

• Temperature in Kelvin = Temperature in Celsius + 273
• Eg. 10K = -263°C

• Mercury thermometer, Alcohol thermometer
• Accuracy: ± 0.5

What is the purpose of a data logger?

• Gives more accurate readings of temperature than thermometers.
• It is commonly used to take measurements outdoors.

Measuring Volume (Apparatus)

Measuring Cylinder 

• Accuracy: Nearest 0.5 cm³
• Eg. 41.5 cm³ or 99.0 cm³ 

Burette

• Accuracy: 0.05 cm³
• Used to deliver different volumes of liquids (eg. 24.00cm³ or 38.95cm³)

Pipette

• Accuracy: accurately measures out fixed volumes of liquids eg. 20.0 cm3 or 25.0 cm3