Because metamorphic rock is smaller than brick
how is metamorphic rock different than intrusive rock
A texture know as foliation is common in metamorphic rock and garnets are more commonly found in metamorphic rock than other rock types of the crust.
If by particles you mean the size of the crystals, then the crystals in metamorphic rock are often larger than in the sedimentary rock. High heat and pressure can cause the minerals to recrystallize. This would be the case in the metamorphosis of limestone (sedimentary) to marble (metamorphic).
By a process of melting and re-solidification of the melt produced..
Yes.
if rock melts it will form magma, which leads to the formation of igneous rocks
Brick is baked mud, and as such, can be considered to be sedimentary.
The metamorphic rock would be older, because in the sedimentary rock's formation that is caused by collected sediment taking years to harden and turning into a rock, the metamorphic rock would have already been considered metamorphic when traces of it came into the sedimentary.
actually, it truly depends on the type of rock the metamorphic rock formed from. in other words, if it formed from a rock that held basalt in it, the rock has basalt in it. remember that a metamorphic rock can be formed by more than two different types of rock (such as metamorphic quartz, slate, "fool's gold", plus granite). it does not matter which class the metamorphic rock formed from (but if a m. rock such as m. quartz, there is more likely a chance of finding a trace of basalt), as long as it formed from two different class of rock (this does not always apply, for there can be a metamorphic rock made from two or more metamorphic rocks). i would get into geodes...... but that's another answer. :)
Many things can be smaller than a rock, such as a pebble, a grain of sand, or even a speck of dust.
No it does not occur.
slate