Material Transfer

Question 0

Volcanoes: water is added

Answer 0

To the hydrosphere from Earths interior.

Question 1

Volcanoes erupt a variety of interior gases: (4)

Answer 1

Hydrogen,
Hydrogen chloride HCl,
Hydrogen sulfide H2S,
Sulfue dioxide SO2.

Question 2

Volcanoes: water vapour is

Answer 2

Released from partial melting of subducting lithosphere.

Question 3

Divergent margins: sites of exchange of elements between

Answer 3

The ocean crust and hydrosphere.

Question 4

Divergent margins: Seawater weathers basalt,

Answer 4

Influenced by heat from the mantle and newly formed crust.

Question 5

Divergent margins: sodium ions are exchanged for

Answer 5

Calcium ions in basalt and released into sea water.

Question 6

Convergent margins: subducting oceanic lithosphere melts,

Answer 6

Forming magma which can either solidify at depth, or rise to overlying crust to form a volcano.

Question 7

Convergent margins: some basaltic crust escapes

Answer 7

Subduction and is added to the continental crust, where it becomes part of the rock cycle.