answer to Transformations 5

EARS
EARL
MARL
MAIL
SAIL
SOIL
TOIL
TOOL
TOOK
LOOK

9 steps!

answer to Transformations 4

BARS → FALL

BARS
BURS
FURS
FURL
FULL
FALL

5 steps!

BARS → PISS

BARS
BASS
PASS
PISS

3 steps!

BARS → PUKE

BARS
BARE
PARE
PURE
PUKE

4 steps!

answer to Transformations 3

There is always, of course, more than one possible answer. Here's my first stab.

SHIP → ROCK

SHIP

SHOP

SLOP

PLOP

POOP

POOF

ROOF

ROOK

ROCK

8 steps! Can you do better?

answer to Transformations 2

Six steps:

HAIL

1. SAIL
2. SOIL
3. SOUL
4. SOUR
5. SOAR
6. STAR

Can you find an even shorter solution?

answer to Transformations 1

In six steps:

LICK

1. LOCK
2. LOOT
3. SOOT
4. SLOT
5. SLAT
6. SLAP

So—there it is.