How We See
This must bounce off an object and enter our eyes for us to see it.
light
These animals often have larger pupils than humans to gather as much light as possible.
nocturnal animals
This is the opening in the center of the eye that lets light in.
pupil
Animals can see perfectly fine without any light present.
false
This is the word that describes how the tapetum lucidum bounces light back out through the retina.
reflects
This is what happens to human pupils when you walk from a bright room into a dark room.
they get larger to let more light in
This is the special, mirror-like layer in the back of many animal eyes that makes them "glow" in the dark.
tapetum lucidum
This is the sensitive layer located at the back of the eye that receives reflected light.
retina
Light must bounce off an object and enter our eyes for us to see it.
true
This is the missing word in this sentence: "Animals cannot see without any ______ present."
light
This is the percentage of light needed in a room for eyes to be able to create an image (zero or some?)
at least a tiny amount of light (eyes cannot see in 0% total darkness)
This is how the tapetum lucidum helps an animal see better in the dark.
giving light a second chance to bounce off the retina, doubling their ability to see in the dark
This group of specialized light-sensing cells helps us see colors in bright light.
cones
Humans have a tapetum lucidum layer in their eyes, which is why human eyes shine brightly in car headlights
false
This is the two-word term for the special, mirror-like layer in the back of animal eyes.
tapetum lucidum
This is why an owl cannot see if it is placed in a completely sealed room with 0% light
because eyes need at least a tiny amount of light to bounce off objects and create an image
This happens when a flashlight shines into a cat's eye at night because of the tapetum lucidum.
it reflects light back out through the retina, making their eyes look like they are glowing/shining
These special cells help nocturnal animals detect motion and see in low light.
rods
Nocturnal animal eyes contain more rods for night vision.
This is the central opening of the eye that expands in dim light to let more light in.
pupil