Checking for Absorbency

Checking for Absorbency

We often have spills in our classroom.

Today we set about trying to find out which materials would be best for mopping up spills (which materials are most absorbent).

We helped teacher to design an investigation to find this out.

We used our whiteboards to write down suggestions for teacher!

Before we began our investigation we PREDICTED which material would be most absorbent and which would be least absorbent (and so be most waterproof).

We decided to test out our predictions by first pouring the same amount of water into 5 different containers.

Then we mopped up each of the spills of water with different materials (cling film, newspaper, tissue, magazine, tinfoil and a cloth).

After leaving the material for 5 seconds to absorb the spill we emptied out the left-over water into little cups.

We compared the cups and ordered them according to which cup had the most water (from the least absorbent material) to the cup with the least water (from the most absorbent material).

Our predictions were very close.