Because it's neither solid or liquid.
Slush is a word given to describe half melting water ice where crystals of ice are present together with a little liquid water. If one had a magma made of crystals in present together with liquid rock - this could be described as a "slushy" mix BUT please note a normal Magma will be entirely liquid until it moves to environment where it begins to cool (at which point crystals will start to form in it) - magma is ONLY a slushy mix for a short time - just before it solidifies.
The melted mineral material in the mantle is called magma.
Magma comes from the melting of material in the crust or upper mantle.
Melted material that rises from the mantle is called magma. Once magma reaches the Earth's surface, it is then referred to as lava.
Magma
No. Magma is molten rock that has not erupted. After it erupts it may or may not form pyroclastic material depending on how explosive the eruption is.
This material is most often referred to as magma.
You probably no how to make a slushy all you do is go to a store and buy strawberry syrup and pour it on top of your slushy and there you have your very own strawberry slushy.
That is the correct spelling of "slushy" (in a slush, or a semi-frozen drink, also slushie).
Magma
Lava and Magma
magma