1.   As the lava reached the surface, much of the water escaped as hot vapor clouds.

2.   Central vent and fissure eruptions represent the two basic ways in which magma can reach the surface.

3.   It always amazes me that animals reach the surface alive from great depths.

4.   The seismic waves from deeper earthquakes lose much of their energy by the time they reach the surface.

5.   With a finger in the thimble, you push through space until you reach the surface of the computer-generated object.

6.   They reach the surface, tipped by hydraulics beneath the room, to see the can still pouring, and they rest on top of the filled glass.

7.   Consequently, on reaching the surface they have a comparatively low residual pressure and explosive activity is very limited.

8.   Then, suddenly, the programme was interrupted by a newsreader who announced that the party had just reached the surface.

9.   As growth reaches the surface, keep submerging them a little lower, until they reach the desired depth.