Answer:
As for the other questions: hate to be rude, buddy, but you've got the text in front of you. Use that with your prior knowledge to reason this out. I'll give you hints, but you have to come up with the answer yourself. This is your work, not mine. If you don't do it, you learn nothing and only hurt yourself. You have done the classwork, not me. Put it to use.
Hint #1: puzzle pieces; crust pieces
Hint #2: Look at the text you have.
Hint #3: earthquakes, volcanoes, tsunami
Hint #4: continental = thick, oceanic = thin
Hint #5: continental-continental, oceanic-oceanic, continental-oceanic
I hope this helps you out! Have a marvelous day, 'kay?