It will SINK!!!: a piece of lead, a marble, a rock, a piece of clay, dice, It will FLOAT!!!!: a piece of paper, a small stick, a small plastic cube with a density of 0.9 g/mL, vegetable oil, empty match box,

Will it sink or float if placed in water?

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?