Mass: Is the amount of matter in an object.
Volume: Is the space occupied by a matter

Measuring Tools:




• Length measuring units are: meter - centimeter.
• 1 meter = 100 centimeter.

• Mass measuring units are Gram - Kilogram.
• 1 kilogram = 1000 gram.
Exercise:




3- volume:

Measuring tools



-measuring units:

• Liquid volumes measuring unit is:
Liter or milliliter

Liter = 1000 milliliter or = 1000cm3

• Solid volumes measuring unit is

The Cubic meter (m3) or the cubic

Centimeter (cm3).
















Estimating volumes of solid objects:

Solid objects may be regular or irregular in shape:

Calculating the volume of a regular shaped solid object:
Like your science book, regular box

Volume of cuboid = height × Width × Length








· Estimating Volumes of irregular shaped solid objects
Like piece of stone


• Liquid volumes measuring unit is:
liter or milliliter

Liter = 1000 milliliter or = 1000cm3

• Solid volumes measuring unit is

the Cubic meter (m3) or the cubic

centimeter (cm3).