Refraction and Lenses

A mirage forms when....

• A regular reflection occurs

• Light refracts as it moves from hot air near the ground to cooler air above

• Light passes into medium with greater density

• Light rays are bent by water in the air

As a rainbow is formed, light...

• Refracts and reflects

• Refracts and forms a real image

• Reflects as from a plane mirror

• Refracts and forms a virtual image

The type of image formed by a lens is determined by...

• The index of refraction of the object

• The brightness of the light passing through it

• The surface onto which the image is projected

• The shape of the lens and position of the object

The type of image formed by a convex lens is determined by the object’s....

• Transparency or opaqueness

• Translucence or transparency

• Position relative to the focal point

• Position relative to the optical axis

When white light enters a prism, each wavelength is _______ by a different amount.

• Refracted

• Reflected

• Shown

• Bent

A lens is a curved piece of glass or other ______ material that reflects light

• Opaque

• Dark

• Transparent

• Black

The ______ light travels through a medium, the lower is the medium’s index of refraction.

• Slower

• Faster

• Different ways

• Darker the

Parallel light rays passing though a concave ______ meet.

• Always

• Sometimes

• Every so often

• Never

Light rays passing through a ______ lens parallel to the optical axis are bent towards the center of the lens.

• Concave

• Plane

• Convex

• Broken

______ can cause tiny to see one image in two places.

• Refraction

• Reflection

• Magic

• Bending of light