6. Objects may float or sink in water

While conducting the activity in the previous section, we observed that the insoluble substances separated from the water. This was also found with some liquids; these materials did not mix with water and floated to the water's surface. Others may have sunk to the vessel's bottom, right?

 

We could have seen a paper floating on the surface of water, not a pen.

 

Note: The objects that will float in water has low density than water. If the material has a higher density than water, it sinks into the water.

 

Let us use an activity to understand.

 

Step 1: Collect objects such as wood, a key, a sponge, coins, stones and a leaf.

Step 2: Fill a vessel halfway with water.

Step 3: Place all in the water.

Step 4: Keep an eye on what is going on.

 

Step 5: Make a list of the items that float and sink to the bottom of the vessel.

 

CBSE class 6 Unit 4 (SORTING MATERIALS INTO GROUP)