Planning an investigation
First of all, have a look to this picture.
S.O.S “Speaking of science”
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Which is the Most Absorbent?
We have all seen advertisements where two brands of paper towels are compared by observing how quickly or thoroughly they suck up a mysterious blue liquid or by wiping up some muddy footprints from their kitchen floor.
In every store, big or small, there are numerous brands of paper towels available, each claiming to be the best, the most absorbent or the cheapest. How do we prove or disprove these claims? How do we work out which paper towels are truly great and which are almost entirely useless?
Will the shape of an ice cube impact how fast the ice melts?
- a lot of ideas
Salt in the water ABC science with audio