4.5
an optical instrument that allows you to see distant objects
What is a telescope?
The part of the eye that controls the size of the pupil.
What is the iris?
A lense that is thicker in the center than at the edges.
What are convex lenses?
It forms when rays actually meet, and are upside down.
What are real images?
It transmits most of the light that strikes it.
What is a transparent material?
This is a type of telescope uses two lenses to focus light
What is a refracting telescope?
The part of the eye that controls how much light enters it
What is a pupil?
A lense that is thinner in the center than at the edges.
What is a concave lens?
An imaginary line that divides a mirror in half
What is the optical axis?
It scatters light as it passes through.
What is a translucent material?
What is a camera?
The front layer of the eye that protects it
What is a cornea?
What is diffuse reflection?
The point at which rays parallel to the optical axis meet
What is a focal point?
This reflects or absorbs all of the light that strikes.
What is opaque material?
An optical instrument that allows you to see tiny objects
What is a microscope?
What is nearsighted?
A measure of how much a ray of light bends when it enters amaterial.
What is index of refraction?
What is a plane mirror?
Any TWO colors that combine to form white light.
What are complementary colors?
This uses a lens and a mirror to focus light
What is a reflecting telescope?
A word used to describe a person that can see far away, but not close up
What is farsighted?
A curved piece of glass or other transparent material.
What is a lens?
A copy of an object formed by reflected or refracted rays of light?
What is an image?
Colored substances that are used to color other materials
What are pigments?