Eye Parts
What part of the eye does light enter through?
The pupil
Which lens is thinner in the middle and makes objects look smaller?
A concave lens
What do we call it when light bounces off a surface?
Reflection
Why do nocturnal animals have dilated pupils?
To let in more light so they can see better at night
Why can Maria see more with a light shining through a clear plastic bag than a brown paper bag?
It is transparent
What structure at the back of the eye focuses light and sends signals to the brain?
The retina
Which lens is thicker in the middle and makes objects appear larger?
A convex lens
What do we call it when light bends as it passes between materials?
Refraction
Why do predators have forward-facing eyes?
For depth perception and judging distance
Farrah's vision is blurry after and eye injury. What is the most likely problem?
Her eye is not focusing light properly
What clear outer covering of the eye helps bend and focus light?
The cornea
What kind of lens does a magnifying glass use?
A convex lens
What type of material allows no light to pass through?
Opaque
Why do prey animals have eyes on the sides of their head?
To have a wider field of view to see predators
A student says a magnifying glass makes images bigger because it has a concave lens. Correct them!
A magnifying glass uses a convex lens
Which part contains rods and cones that detect light and color?
The retina
What happens to light when it passes from air into water?
It refracts (bends)
What type of material lets only some light pass through?
Translucent
Why are some parts of an animal's eye transparent?
So light can pass through and be focused to form clear images
If light cannot pass through an object at all, how will it appear?
Dark or solid because it's opaque
Describe how light moves through the eye to create an image.
Light enters through the pupil - lens focuses it - retina receives it - brain interprets it as an image
Explain why convex lenses make images appear larger.
They bend light inward so the image appears bigger when viewed up close.
What is the "picture" formed when light rays bounce off an object and into your eye?
An image
Helps them hunt, avoid predators, find food, and navigate
Why might underwater animals need different eye structures than land animals?
What bends light differently, so their eyes adapt to focus light properly underwater.