Adobe After Effects Adobe After Effect 4

Question 1

Which expression returns the current time of the composition in seconds?

Accepted Answer

time

Answer

The 'time' expression evaluates to the current composition time in seconds.

Question 2

What is the purpose of the wiggle() expression?

Accepted Answer

Add random oscillating motion to a property

Answer

wiggle() generates pseudo-random movement based on frequency and amplitude.

Question 3

Which tool is used to draw a mask directly on a layer?

Accepted Answer

Pen tool

Answer

The Pen tool creates mask paths by placing vertices on a layer.

Question 4

What does the Roto Brush tool help you accomplish?

Accepted Answer

Separate a foreground subject from its background

Answer

The Roto Brush isolates a moving subject from the background across frames.

Question 5

Which interpolation type creates sharp, instant changes between keyframe values?

Accepted Answer

Hold

Answer

Hold interpolation keeps a value constant until the next keyframe, producing a sudden jump.

Adobe After Effects Practice Test