When light enters a material but does not leave it, it is called:

When light rays bounce off the surface of an object, it is called:

When light rays bend or change direction when passing from one medium to another, it is called:

In the image, the term that best fits letter A is:

In the image, the term that best fits letter B is:

In the image, the term that best fits letter C is:

In the image, there is a penny on the bottom of the beaker. The beaker in the left-most image is empty, and the eye is attempting to see the penny from the side/topside of the beaker. In the middle image, the eye is looking straight down into the beaker. In the right-most image, the eye is looking from the side/topside; however, the eye in this image is unable to see the penny. Choose the answer that explains why the eye cannot see the penny in the right-most image.

Choose the answer that explains how the candle will look on the right side of the convex lens.

Complete the sentence: the image on the back of the eye is _________.

If light enters the top of your eye, it hits the retina on the:

If light enters the middle of your eye, it hits the retina on the:

Using the above image of the eye, identify the part labeled 'a'.

Using the above image of the eye, identify the part labeled 'e'.

Using the above image of the eye, identify the part labeled 'g'.

Using the above image of the eye, identify the part labeled 'i'.

This part of the eye is a jelly-like substance and gives shape to the eye.

This part of the eye is the opening through which light passes.

This part of the eye is the muscle that closes and opens the pupil, this part can often have interesting colors.

These are the specialized cells that pick-up black and white images.

These are the specialized cells that pick-up color.

This is the part of the eye that does the most refraction.

This is the part of the eye in which there are no rods or cones and connects to the optic nerve.

This is the part of the eye that transmits information to the brain.

This is the part of the eye that is reflective and brightens up the image for nocturnal animals.

This is the part of the eye that is a few cells thick on which the image is projected upside-down.

Using the graph, what is the approximate blue cone activation percent for a purplish blue (450 nm) incoming wave of light?

Using the graph, what is the approximate red cone activation percent for a deep red (690 nm) incoming wave of light?

When a drinking straw is placed in a container of water so that it is partly submerged, it appears bent because of

What happens to light when it passes from air into water?

Which of the following materials would likely have the highest index of refraction?

When sunlight passes through the atmosphere and enters a lake, what happens to its speed?

What happens to the light from a flashlight when it is directed at a smooth and shiny surface like a bathroom mirror?

Which of the following materials will light not pass through?

What happens to the speed of light when it passes from a denser medium to a less dense medium?

Which of the following shows the principle of light reflection? Tick the correct answers.

During a physics class experiment, Anika observes that the color of light changes when it passes from air into water. She wonders, the wavelength of light depends

1. Your friends say that they saw a special nail polish that changes color when it is out in the sun. Can light from the sun cause the nail polish to change color?

When light hits a barrier that is solid/opaque what is usually created?

When you shine sunlight through a magnifying glass onto a piece of paper, you can sometimes set the paper on fire. Why does this happen?

Photons are particles of light.

Light behave like

The sky is blue because air molecules in the sky

Light must be _______________ in order for the material to be affected by light.

When light reflects off a surface, what is the relationship between the angle of impact and the angle of reflection?

How does the color of a surface affect its ability to reflect light?

Law of Reflection states that the incident angle is ____ the reflected angle

If light strikes a plane mirror at a 45^o angle, what angle will it reflect?

What type of reflection occurs when light beams reflect at the same angle usually after hitting a smooth surface?

True or False? Reflection is the bending of light rays

regulates how much light enters the eye

contains millions of light receptor cells called rods and cones

the whites, outer, protective layer of your eyeball

the opening in our eyes which change shape depending on the movement of the iris

the pathway through which electrical impulses send visual images to our brain

changes shape to allow us to focus near and far and near again

eyelids, eyelashes and eyebrows help to protect our eyes

the part of the eye that determines our eye color

if the cornea of our eye is like a "windshield" then this structure is like a "windshield wiper"

structures of the outer eye (choose all that apply)

our eyes can see when... (choose all that apply)

What is the job of the lens?

What is the job of the retina?