Can Any One Answers These Geology Questions?

[HawaiiFishCave]

1. When hot particles within a nuee ardente fall to the ground and stick together , a welded _____ forms ?

2 A Flow of mud and pyroclastic material is called a ____?

3. A Volcano Dome forms when rising ____ cools and hardens within a volcano's crater

4. Composite cones useally have _____ lava?

5. Volcanos that form on continent margins above subduction znoes typically have ____ silica than volcanos in rift valleys?

Thanks
A.When Balsaltic lava erupts beneath the sea, it forms a ____ structure?

B. Within a single lava flow in hawaii , a'a' textured lavas are found ____ ____ from the vent than pahoehoe lavas.