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Eyes
Test Description: Light Waves and the eye
Instructions: Answer all questions to get your test result.
1) What part of the eye acts like a convex lens?
A
iris
B
retina
C
corena
D
pupil
2) What part of the eye sends signals to the brain?
A
retina
B
pupil
C
optic nerce
D
iris
3) What part of the eye helps focus an image by changing its shape?
A
pupil
B
lens
C
iris
D
cornea
4) The opening that controls how much light enters the eye
A
pupil
B
iris
C
cornea
D
lens
5) The colored part of they eye that controls the size of the pupil
A
iris
B
optic nerve
C
retina
D
lens
6) A nearsighted person wears glasses to help correct her vision. The lenses in the glasses
A
focus light directly on the cornea
B
make the images of objects seem larger
C
make nearby objects seem clearer
D
spread light out so that an image is focused on the retina
7) A farsighted person needs glasses that
A
increase the sensitivity of rod and cone cells
B
focus light rays farther forward, toward the retina
C
change how the lens of the eye responds to light
D
flatten the cornea to make it less convex
8) Jordan wears glasses with concave lenses. The glasses help
A
flatten his cornea to correct nearsightedness
B
spread light rays to correct nearsightedness
C
act with his cornea as a single lens to correct farsightedness
D
change the shape of the lens in his eye to correct farsightedness
9) The rod cells are located in this part of the eye
A
corenea
B
optic nerve
C
lens
D
retina
10) Cone Cells
A
are found in dogs
B
respond to light
C
detect color
D
are located in the optic nerve
*select an answer for all questions
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