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Learning about different materials that float and sink in water
We did a science experiment and learnt about some materials that float and sink in water.
Here are 3 things that we have been asked to investigate:
Does wood always float?
Does metal always sink?
What makes plastic sink or float?
Here are some of our conclusions to the above questions;
"Yes, wood normally floats"
"It depends if the wood is light or heavy"
"For metal, tin foil always floats"
"Air gets trapped inside plastic and that makes it float"
"To make plastic sink you have to put weight on it or push it down".