Prof. Jenna Spevack | Teaching Site

2D Animation: AD540

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Apparent Motion is

a) dependent on the persistence of vision or beta movement.

b) created by consecutive still images in quick succession.

c) the motion represented in television, films, computer, games, multimedia presentations, and the like.

d) all of the above

The zoetrope, phenakistoscope, praxinoscope, and movie projectors all rely on a stroboscopic effect to produce the illusion of motion.
true

false
If the rate at which we view the images moves too quickly, the images blur, if they move too slowly the movement appears jerky. Images must succeed one another at least 1/10 per second.

true

false

This theory refers to the length of time the retina (the "screen" at the back of our eyes which is sensitive to light) retains an image.

a) Persistence of Vision

b) Beta Movement

c) Phi Phenomenon

d) Magni-phi

The basic unit of time animators and film-makers deal with is determined by the recording and projection rate of the individual film frame or video image. The standard frame rate for film is:
a) 30 frames per second

b) 25 frames per second

c) 24 frames per second

d) There is no standard for film.
Which animation timing technique is concerned with series of sequences and how they relate to each other in order to create a coherent whole?
a) Pacing

b) Phrasing

c) Timing of an Action

d) Inertia
If equal force is applied to a bowling ball and a balloon at the top of a hill, which object will gain greater momentum as it travels along its path of action?
a) Balloon

b) Bowling Ball

c) Both will gain an equal amount of momentum.
When a ball is thrown vertically, it will accelerate according to the second law of motion, until gravity counters the initial force. Which diagram is accurate?

a

b

c
Which Law of Motion does the following diagram best depict?

a) Inertia

b) Universal Law of Gravity

c)Equal and Opposite Action

d) None of the above
This animation demonstrates both slow-in and slow-out. Slow-in occurs in the last 10 frames of the animation.

true

false
Drag, the delayed action of part of a moving object, can be a result of friction or variable inertia within the object. Which of the following can be subejct to drag during a walk?
a) arms

b) feet

c) hair

d) all of the above
A guide used to control the motion of an action is called a path of action.

true

false
Which timing chart shows slow-out?

a)

b)

c)

d)
Stretch creates an illusion of weight and is used as the result of impact with another object or impact with a surface.

True

False
The first and last frames of a cycle animation are the same. (trick question)

True

False
This animation is an example of what type of action?

a) Drag

b) Overlapping

c) Follow Through

d) All of the above
Timing a walk to 20 frames per step would create a tired or elderly person's walk.
true

false
The Four Parts of a Walk include the Contact Position, the Passing Position, the Down and Up Positions. The passing position of a walk animation also called the breakdown drawing.

True

False
The Four Parts of a Walk include the Contact Position, the Passing Position, the Down and Up Positions. Which positions could be considered the key (or extreme) drawings?

a) the contact and down positions

b) the passing and up positions

c) the contact and passing positions

d) the contact positions
When we walk our weight shifts from one foot to the other in a normal stride. How do the shoulders and pelvis counteract the change in weight?
a) The shoulders and pelvis oppose each other.

b) The shoulders and pelvis stay level with the ground.

c) The shoulders and pelvis tilt toward the contact foot.

d) None of the above.
When the right leg moves forward in a walk animation the left arm and shoulder move forward too.
true

false

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