Focus On Life Science: California Grade 7

Lesson 4: The Eye and Vision

Standards Check

1.
Light enters the eye through the _______. 6.b
A)cornea
B)iris
C)lens
D)retina
2.
A person who cannot see far away objects clearly is ________. 6.d
A)blind
B)farsighted
C)color deficient
D)nearsighted
3.
Why can't you see your reflection in a brick wall? 6.b
A)Light rays are reflected in only one direction from the rough surface.
B)No light is reflected from a brick wall.
C)Light rays are reflected in many directions from the uneven surface.
D)Reflection of light from a rough surface is regular reflection.
4.
The shape of the _______ changes when you focus on nearby and distant objects. 6.d
A)cornea
B)lens
C)retina
D)optic nerve
Grade 7
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Policy before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.