......
26. where gps recievers get their signals - satellites
27. name of the feature where all the volcanoes are in the pacific ocean - the ring of fire
28. boundry that causes the great mountains ranges of the world - tetonic plate boundries
It would have helped if you included the number of letters to help avoid alternative answers.
1) Continental Drift
4) Volcanoes
5) either Conservative or Transform boundary
7) subduction zone or convergent boundary
8) paleogeology
9) oceanic
10) plastic
11) expanding/widening
13) Pangea (also sometimes spelled Pangaea)
15) continental crust
16) volume
19) mantle
20) mid-ceanic ridges
22) rock
23) foreland basins
25) Divergent boundary
29) Lithosphere
12) oceanic crust
14) Ultramafic magma
17) Alfred Wegener
16) Divergent (I am wondering if you put 16 and 17 out of order)
21) Core
24) Convergent
26) satellites
27) "Ring of Fire"
28) Convergent
