Thread: Earth Science help

I have some question for my science puzzle:
#1 The layer or zone of the lithosphere between the crust and the outer core.
# 2 A very hot cloud of incandescent volcanic ash that often moves down slope at great speed (2 words).
# 3 A relatively stationary plume of hot mantle rock that produces volcanic chains such as Hawaii.

What's your intent here?

If it's homework, we discourage direct answering unless or until the poster shows they've done some thinking about the problems.

i think we've had something like that before - it's one of those crossword puzzles with geologic terms
still, i agree that a little googling would have solved your question
i entered #1 and got the following wikipedia article : Structure of the Earth
googling #2 already gives the word you're looking for in the first header + likewise for #3

2: Pyroclastic storm.. one of my most favorite magic cards

Storm? Are you sure. Not flow? Gadzooks, sirrah, methinks tis flow.