Floating and sinking:
Why does something float:I think some things can float like plastic and light things like a floaty.
Why does something sink:I think heavy things will sink because it's not as light as small things.
Why does something semi-floats:Something that is a boat because it has no air and it's a big thing that can float and sink.
Aim of purpose:Predict and test the buoyancy of objects.
Equipment:
Marbles - large and small size.
Golf ball.
Table tennis ball.
- Several blocks of material:
Different sized wooden blocks.
Different sized plastic blocks.
Polystyrene.
Name of Object | Size | Weight | Composition | Prediction | Buoyancy Result |
Small Marble | 5cm | 5.31g | Glass | sink | sink |
Big Marble | 8cm | 22.24g | Glass | sink | sink |
Golf Ball | 14cm | 2.59g | Rubber & plastic | sink | sink |
Table Tennis Ball | 13cm | 62..24g | plastic | float | float |
Tennis Ball | 21cm | 43.89g | rubber | float | Semi float |
Polystyrene | 7.2cm | 0.24g | Kind of Foam | float | float |
Long block wooden | 10.1cm | 11.13g | Wood | sink | semi |
Miniature block cube | 1cm | 0.29g | Wood | float | Semi Float |
Big wooden cube | 2cm | 2.37g | Wood | sink | semi float |
Big block | 14cm | 111.17g | Wood | sink | Semi float |