The human eye works as a _____________ sensor.

When you see an object in a room, the light is bouncing off of that object and going straight into your ___________.

The opening in the center is called the __________.

The ______________ looks black, but it is really just like a clear

window that lets light into the eye.

The cornea is a protective covering over

the whole eye. It keeps the eye from

getting ______________.

The lens in the eye is like the lens in eyeglasses or in a camera. The ________ focuses the light coming into

the eye.

The lens focuses light onto the back of the eyeball on an area called the __________________.

Sensors in the retina detect the light that reaches them. Those sensors send a signal to the brain through

the ______________ nerve.

When you see a light bulb, several things happen. First, some of the light coming from the ____________ enters your eye and reaches your retina.

A lot has to happen for you to see something; but it

happens very _______________.

Your eye is a sensor. Special equipment also can act as a ___________________.

When you pointed the sensor at an object, it detected

the light coming from that object. Just like with your eyes or with cameras, light had to enter the _______________ in order to be detected.

Instead of sending a signal that your brain recognizes as

an image, the light sensor sends a signal to a small computer. This computer receives the signal and displays a number that tells how much light is entering the __________.

When you saw an object that looked dim to your eyes, the sensor showed a ___________ number on its display.

When light enters a sensor, a computer gives information.

When light enters your eye, your ___________ gives you information.

Giant sea squids are known to have the largest _____________ of any animal in the animal kingdom.

Even though many animals are larger than the sea squid, none have such big eyes. Some giant sea squids have eyes about the size of your ______________.

Even with large pupils, if no light enters the ___________, then the animal will not be able to see.

An important skill in any subject is ________________. When you summarize something you have read, you tell the main ideas.

Different animals’ eyes work in different ways.

Just like human eyes, animals’ eyes work by detecting _______.

Polar bears live outside in the snow. Because polar bears have to hunt for food in intense sunlight, their ________ have to allow them to see in very bright light.

Polar bear eyes have a protective, clear cover over their

eyeballs. The bears can see through this covering to __________.

Cats also have eyes adapted to their environment. As natural

hunters, cats need to have keen senses in order to stalk

their _______________.

In class, you learned how the human eye works as a light sensor. When you see an object in a room, the light is bouncing off off that object and going straight into your eye.

The eye has several important parts. The opening in the center is called the _________.

The lens focuses light onto the back of the eyeball on an area called the __________.

Your eye is a __________.

When light enters your eye, your _________ gives you information.

a tiny dot of light, when put together the dots can form an image/images.

The __________ is a protective covering over the whole eye. It keeps the eye from getting scratched.

The lens in the eye is like the lens in eyeglasses or in a camera. The __________ focuses the light coming into the eye.

Your eye is a sensor. Special equipment also can act as a sensor.

Just like human eyes, animals’ eyes work by detecting __________.

Cats can see almost as well as humans during the daytime, but their nighttime vision is much better.

Different animals’ eyes work in different ways.

Brooks Middle School is home to the GREAT Bulldogs.