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optic

illusion

vertical

horizontal

Define these words: Why are the pictures on this worksheet considered optical illusions?

Which vertical line looks longer?B. line BA. line A

Measure both lines in millimeters.

line A = _____ mm line B = _____ mm

Which line is actually longer? A. line A B. line B C. same

Does the hat seem taller or wider?B. WiderA. Taller

Measure both height and width in centimeters.

Height of hat = __________ cm Width of hat’s brim = _____ cm

Is the hat actually taller or wider? A. taller B. wider C. same

This is the brim.

Which blue circle seems bigger?B. rightA. left

Measure the diameter of each circle in centimeters.

Diameter of left circle = ______ cm Diameter of right circle = _____ cm

Which blue circle is actually bigger? A. left B. right C. same

Which side appears to be longer?B. side BA. side A

Measure side A and side B in millimeters.

Side A = _____ mm Side B = _____ mm

Which side is actually longer? A. side A B. side B C. same

A

B

Which superhero appears to be the tallest?B. middleA. left

Measure their height in millimeters.

Height of left superhero = _______ mm Height of middle superhero = ____ mm Height of right superhero = ______ mm

Who is actually tallest? A. left B. middle C. right D. all the same

C. right Which do you see first:profile of two super-heroes or the goblet?

B. gobletA. profiles

Are the laser beams curved?B. noA. yes

Hint: Hold the straight edge of your ruler against the lines. Which x-ray vision line makes a straight line to point C?

B. x-ray vision line B

A. x-ray vision line A

AB

C

READY FOR SCHOOL

SUPERHEROES: Optical Illusion Metric WorksheetOptical Illusion Metric Worksheet

A B

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