When welding a thin piece of metal on top of a thicker piece, the ____________________ pattern ...

When welding a thin piece of metal on top of a thicker piece, the ____________________ pattern
  concentrates more heat on the thicker bottom piece, permitting proper weld penetration without
  overheating the vertical piece.

 
  Fill in the blank(s) with the appropriate word(s).

Question 2

The plasma arc process works by creating a(n) ____________________ gas called plasma.
 
  Fill in the blank(s) with the appropriate word(s).

Question 3

GTAW is sometimes referred to as ____________________.
 
  Fill in the blank(s) with the appropriate word(s).

Question 4

Pipe welding requires the use of electrodes that produce ____________________ penetration.
 
  Fill in the blank(s) with the appropriate word(s).

Question 5

All ____________________ must be removed between beads to ensure a solid weld.
 
  Fill in the blank(s) with the appropriate word(s).