In order to move on in our science learning, it was really important that we understood exactly what makes a solid solid and a liquid liquid! It was still really tricky for us to make genuine generalisations so we spent a bit longer investigating a wide range of materials to see if we could come up with some general rules. This is TRICKY science and was challenging all of us! Mrs Northcott deliberately included some rather tricky materials to challenge our misconceptions and to force us to really think.
We came up with some amazing general rules.
MB: All solids can be picked up.
DS. All solids can be broken.
KL: I noticed that liquids can't be picked up unless it's in a container.
JB: I noticed that solids stay in one place unless they are touched, but liquids need a container.
We predicted that the sand would stay in a pile but the water would flow downhill. We were able to move the sand by applying pressure, and LLM thought the wind could also move it, but JB knew she'd be able to pick most of it up. The water did just what we expected, and as predicted, MB struggled to put it back in the pot!
Lots of budding scientists noticed that there are materials that seem to be liquids that would stay in one place because they are thick, such as paint, PVA glue and jam! One to investigate further...