Styles of Edit

There are lots of ways to move from one image to the next - these are often called 'Transitions' and certainly this is what we call them when we are editing.

The main edit styles are:

STRAIGHT CUT
DISSOLVE
FADE TO BLACK
FADE UP
JUMP CUT
WIPE
GRAPHIC MATCH

A straight cut literally cuts form one scene to another. The fade to and up from black do exactly what they say on the tin - the screen either starts or ends completely black with a slow change form the image to the black OR from the black to the image.

A dissolve (which has many different variants when editing) is basically where one scene fades out and another fades in. For much of the time, BOTH images can be seen at the same time.
A good example of this technique being used repeatedly is in Citizen Kane - old but a clear example.