A material that does not allow light to pass through it is ________________.

A material that allows light to pass through it it ___________________.

If a material allows light to pass through it, but you cannot see objects on the other side of it, that material is _________________.

Light always travels in a _____________ line.

____________ light is a mixture of colored lights.

The series of colored bands that are created when sunlight is separated is the _______________.

If all the colors of the spectrum are ____________ by an object, then the object is black.

Bending of light rays as they enter a new material is called _________________.

A blue dress appears blue because the dress is _______________ blue light.

The electric light bulb was invented by ________________.

The transparent layer covering the front of the eyeball is the _____________.

The opening that allows light to enter the eye is the ___________.

The muscles that regulate the size of the pupil are found in the ________________.

The light-sensitive lining covering the inside of the eyeball is the ______________.

The structure behind the pupil that reflects and focuses the light it receives is the ___________.

The large bundle of fibers what carries the message of what the eye has seen to the brain is the _____________.

The type of vision in which both eyes work together to produce an image of the same object is _____________________.

Many nocturnal animals have an extra layer of reflecting cells behind the retina called the ________.

A mirror which bulges toward the viewer and makes things look smaller is a _____________ mirror.

A mirror which bulges away from the viewer and makes things look bigger is a ____________ mirror.

A lens which refracts light rays and brings them into focus is a ______________ lens.

A lens which scatters light rays is a ____________ lens.

See image

See image

Sir Isaac Newton's reflecting telescope used a ______________ mirror and a convex lens.

List the spectrum colors in order.

Insects that move from place to place with the changing of the seasons are _____________.

When an insect blends in with its surroundings, it is an example of ______________.

An insect with a straight line down its abdomen and chewing mouth parts is a _____________.

A young insect that looks exactly like the adult is a _____________.

A male bee is called a _________.

Animals which eat meat are ____________.

Animals which chew the cud are _____________.

The largest group of mammals is _____________.

Whales and dolphins have a layer of ____________ instead of fur.

Animals that are active only at night are ____________.

Name two egg-laying mammals.

The odor of the skunk is produced by its _________ glands.

Chimpanzees, gorillas, and monkeys all belong to the order of mammals called ______________.

Animals whose species no longer exist are __________.

Explain the importance of insectivores as part of God's plan for maintaining the balance of nature.