Science Behind Sight

What is the author's purpose in writing The Science Behind Sight?

• to teach us about our five senses

• to inform the reader about the sense of sight

• to teach the reader how to read diagrams

• to inform the reader how glasses help people see

Text Structure: How does the author organize her ideas in Wearing Glasses?

• Sequencing

• Cause and Effect

• Problem and Slolution

• Compare and Contrast

Our pupils let light into our eyes.

• true

• false

Things that give off light are ___.

• transparent

• opaque

• luminous

• bright

Light from luminous objects travels in __ lines.

• curved

• bent

• straight

• arrowed

When light cannot pass through something, it can create a ___.

• funnel

• luminous object

• transparency

• shadow

Humans see better when the light is __.

• dull

• bright

What part of your eye lets light in?

• iris

• pupil

• retina

• tear duct

In bright light, your eye needs to take in less light, so the pupil becomes ___.

• bigger

• smaller

In low light, the pupil becomes ___, to take in more light.

• bigger

• smaller