Question

1. what is pushing apart? 27. why are there so many earthquakes in california? 28. what type of rock are continental plates made from? 29. what type of rock are oceanic plates made from? 30. which type of plate is most dense: oceanic or continental? 31. if an oceanic plate and a continent plate converge, or push towards each other, which plate will sink under the other one? 32. what landform is created when two continental plates push together at a convergent boundary? 33. what occurs when two continental plates move away from each other at a divergent boundary?

Explanation:

1. California is on a plate - boundary where the Pacific Plate and North - American Plate interact, causing stress and frequent earthquakes.
2. Continental plates are made from granite - rich rocks, oceanic plates from basalt - rich rocks.
3. Oceanic plates are made from basalt, which is denser and forms from magma at mid - ocean ridges.
4. Oceanic plates are denser due to their composition of basalt compared to the granite - rich continental plates.
5. The oceanic plate will sink under the continental plate during convergence because it is denser.
6. Mountain ranges are created when two continental plates push together at a convergent boundary.
7. When two continental plates move away from each other at a divergent boundary, a rift valley can form.

Answer:

1. California is on a plate - boundary which causes frequent earthquakes.
2. Continental plates: granite - rich rocks; Oceanic plates: basalt - rich rocks.
3. Basalt.
4. Oceanic.
5. Oceanic plate.
6. Mountain ranges.
7. A rift valley.