Geology questions?

[Joshy C]

47.____ rocks are classified based on the size of the sediment forming them.
a.clastic
b.non clastic
c.both

48.sand is ___silt
a.smaller than
b.larger than
c.same size as

51.the fundamental sedimentary rock unit is called a___.
a.group
b.member
c.formation
d.bed
e.none of the above

52.Limestone is formed from____.
a.calcium carbonate
b.sodium chloride
c.silicon dioxide
d.remains of plants
e.all of the above
d.none of the above

--------Lithificaition process----------
list in order what happens first to last

a.points of contact become tiny welds which cement the grains together

b.increased force and contact cause the grain to grow together

c.the wieght of overlying sediment presses the grains of the sediment together

d.deposited sediment is covered by later arriving sediment

e.seawater is pressed out and the grains packed into a smalled volume