Page 98 - Science Course 3 (Book 2)

Mo10-L6: Vocabulary Review

Direction: In this word search puzzle, f nd and circle the seven terms listed below. Then write each term
on the line before its def nition.

convert cornea iris lens mirror pupil retina

1. light-sensitive cells in the
back of the eye

2. the opening into the
interior of the eye through
which light appears

3. the colored part of the
eye

4. a transparent object
that causes light to
change direction

5. a convex lens in the eye

6. any ref ecting surface

7. to change from one form
into another

Mo10-L6: Key Concept Organizer

Direction: On the line before each def nition, write the letter of the term that matches it correctly.
Each term is used only once.

1. admits light into the interior of the eye A. lens

2. changes the direction of light rays as they f rst enter the eye B. retina

3. converts an image into nerve signals C. pupil

4. controls the amount of light entering the eye D. cornea

5. focuses light onto the back of the eye E. optic nerve

6. carries nerve signals to the brain F. iris

7. What two kinds of cells does the retina contain?

8. What function is performed by each of these two kinds of cells?

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