Absorbency

1
Absorbency

• What does it mean?

2
Absorbency is

• a materials ability to soak up a liquid.

What materials do you think are absorbent?
3
Which of these materials are absorbent?

• Wood
• Carpet
• Fabric
• Rock
• Paper
• Metal
• Sand
• Glass

4
If you spilt water on the carpet, what would
happen?
5
When you put a sponge in the bath, what happens?

• It soaks up the water
• You can squeeze it back out when you wash with it
• Is it absorbent?

6
Can you think of anything absorbent that we
use everyday?
7
Paper Towels

• What do they need to be?
• ABSORBENT
• Why?

8
How many different kinds of paper towel can you
think of?
Kitchen Roll Serviette Hand towel
Toilet Roll Tissue ?
9
Which paper towel is the most absorbent?
Which will be the best for mopping up a spill?
10
You are going to investigate the absorbency of
paper towels.

• What will you need to consider?
• What will you need to change?
• What will you need to keep the same to make it a
  fair test?

11
Paper Towel Investigation

• Aim
• We would like to find out which kind of
• paper towel is the most absorbent.
• Prediction
• What will we need?
• How will we find out?
• What will I measure or observe?
• What did I find out?