Use to refer to the investigation of amount of liquid or solid analogies like sand,
sugar and the like which can be poured between containers of different shapes and sizes.
What is the characteristic of liquids?
- Liquid has the ability to flow.
- Liquid has no definite shape.
- Liquid takes the shapes of the container it is put in.
- Example : mineral water, soft drink, milk, Milo, coffee.
- millilitre ( ml )
- litter ( l ) in metric system
Use materials that seem naturally related to the child’s everyday experience
What is volume?
Volume is the amount of space that an object takes up, adding a third dimension to all the objects around us. Because of that third dimension, volume is measured in cubic units. To measure the volume of liquids, you only need to place them in a graduated cylinder and read the measurement. Determining the volume of solid objects, with measurable or irregular shapes, requires a few more steps.
Below is the picture of a graduated cylinder.
Graduated cylinder is the most common accurate liquid volume measurement tool
To find out the volume of liquid, the liquid is poured into a graduated cylinder and measured. Measurement is in millilitres (ml)
Example of liquid volume measured using different type graduated cylinder.
Reading volumes of liquid.
We use beaker or cylinder to measure the volumes of liquids. We read scales to the nearest liter or milliliter.
We read as..
Comparing the volume of liquids.
Steps to do comparison.
- There are two containers with different volume of water.
- Pour the water into a cylinder.
- The volume of water from the glass is 300 ml.
- The volume of water from the mug is 400 ml.
- The volume of water from the glass is 100 ml less than the volume of water from the mug.
The beaker can hold more water than the cup
The beaker can hold the same amount of water as the bottle.
Summary
The following graphic visualize liquid volume comparison with simple explanation.
The volume of water in container A is 5 litter.
The volume of water in container B is 6 litter
Container A has 1 litter of water less than container
Brain Teaser
Compare the volumes of liquids. Fill in the blanks.
Question 1.
Each container maximum volume is 2 liters.
The volume of chocolate milk is ...................
The volume of orange juice is ....................
The volume of chocolate milk is …………………the volume of orange juice.
Question 2.
The volume of water in the measuring cylinder is ………………
The volume of water in the test tube is ……………….
The measuring cylinder has ……………… of water more than the test tube.
