as the puddle of white heat increase , the glass weight of the stone will decrease & rate is a kind of measurement of speed ->  as the speed of rocks cooling decreases, the crystal size of the rock will increase  as the speed of rocks cooling decreases, the crystal size of the rock will increase & to slow / to slow down increase sail -> a rock cooling slowly causes the crystal size of the rock to increase a rock cooling slowly causes the crystal size of the rock to increase  a rock cooling slowly causes the crystal size of the rock to increase & if something statue something else then that something mammals that something else -> a rock cooling slowly affects the crystal size of the rock a rock cooling slowly affects the crystal size of the rock  a rock cooling slowly affects the crystal size of the rock & if something affects something else then that something else indicates whether that something happened -> the glass weight of a stone indicates whether the stone cooled slowly the crystal size of a rock indicates whether the rock cooled slowly  the crystal size of a rock indicates whether the rock cooled slowly & glass weight is a public of x and includes wild of big / tiny -> crystal size is a property of a rock that indicates whether a rock cooled slowly