19, What event will probably occur to all types of boundaries?
a. Formation of mountain ranges c. occurrence of earthquakes
b. Occurrence of tsunami
d. rising of magma

20. In a transform -fault boundary plates will
a. converge
b. diverge
c. converge then diverge
d. slide past each other
21. In the convergence between the oceanic crust and continental crust
a. the continental crust will subduct
c. the oceanic crust will float
b. trenches and mountain ranges will be formed
d. a tsunami may probably occur

22. In a divergent boundary
a. Subduction may possibly take place
c. rift valleys will eventually become linear seas
b. Deep focus earthquake will occur d. plates will collide

23. A type of plate boundary which can only form mountains and mountain ranges is
a. Transform-fault boundary
c. divergent boundary
b. Convergent boundary
d. both b and c int​