Illusion Worksheet

1. What is the total amount of learning that comes from our remote senses?

2. How many smells can a human distinguish?

3. In the illustration of the room, why does the back line seem longer than the one in the front?

4. How many nerve cells do our senses require?

5. Why does the illustration showing the X made of spheres appear to change when you rotate it?

6. In the next illustration, why does there appear to be a triangle in the picture?

7. Name the psychologist who developed the triangle test.

8. Why is it important that we construct images from incomplete data?

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9. Why is television an optical illusion?

10. Who designed the illusion of the young girl and old woman? When?

11. Why do the lines look crooked?

12. Why are the computer monitor colors an illusion?

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13. Explain how an afterimage works.

14. What is the name of the imposssible object example?

15. Which type of ambiguity is given as an example?

16. Which type of distortion illusion is given as an example?

17. Name all five categories of optical illusions used in this lesson.

18. What is the title of the Escher drawing showing hands drawing each other?

19. In what drawing does Escher combine distortion with an impossible object?

20. When was M.C. Escher born? Died?