Parts of the Eye
Animal Senses
Animal Survival
Properties of Light
Science Words
100
This part of the eye opens and closes to let in different amounts of light.
pupil
100
True or False
If an animal has very small eyes, it probably does not rely on its eyes as its main sense?
Yes or True
100
Animals use their senses to live and __________.
survive
100
True or False
We need light to be able to see.
True
100
Light comes from a light ___________.
source
200
This structure is a vital link between your eyes and your brain, carrying electrical impulses that let you see.
optic nerve
200
Why aren't the eyes the most important sensory organ for a catfish?
Since it lives in muddy water, it must use other sensory organs (like taste buds) to find its food.
200
An animal that is hunted is the ____________.
prey
200
Another word for light bouncing off an object.
reflect
200
An_____________ is a term for the process of finding an answer to a science question.
investigation
300
All sensory information must travel here before an animal is able to respond to it.
The brain
300
Animals like dolphins and bats use a sense called ____________ to communicate.
echolocation
300
The animal that does the hunting is the _________.
predator
300
Light must do this to an object for a viewer to see it.
Reflect off of it
300
When scientists are ready to test an idea, they perform an ________________.
experiment
400
pupil
400
What is the most likely reason a prey animal would have large ears?
To improve its sense of hearing to better notice predator sounds.
400
What does an animal use to remember if prey is good or not good to eat?
memory or brain
400
How can an animal see if there is only a small amount of light?
If they have high-sensitivity photoreceptors
400
When scientists want to test or show how a science idea works. They create a ____________.
model/simulation
500
Special cells in your ______________ react to light and pass signals to your brain that lets you see the world around you.
retina
500
An animal probably has this kind of photoreceptor if it is active in the day.
Low-sensitivity
500
Animals that are nocturnal have ___________ sensitivity light receptors.
high
500
Transparent objects allow all light to pass through them. What do we call objects that allow no light to pass through them?
Opaque
500
Scientists only change one _______ in an experiment.
variable