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Catch a Wave 2
Catch a Wave List 2 Light
| Term | Definition |
|---|---|
| Absorb | When light waves enter a substance and changes into other forms of energy |
| Electromagnetic spectrum | The complete range of frequencies of electromagnetic waves from the lowest to the highest, including, in order : radio, infrared, visible light, ultraviolet, X-ray, and gamma ray waves |
| Reflection | When light waves bounce off something else |
| Refraction | When light waves bend |
| Scatter | To cause to separate widely |
| Visible spectrum | Wave energy we can see, portion of electromagnetic spectrum that is visible to the human eye; made of colors |
| prism | A piece of glass or plastic that bends light waves |
| Infrared | Rays like light but lying outside the visible light spectrum at its red end |
| transmit | To pass or cause to pass through space or a material |
| Ultraviolet light | Light with wavelengths shorter than visible light; the term ultraviolet means "above violet." Ultraviolet light is the range of light waves that have shorter wavelengths than violet light in the visible spectrum. |
| opaque | An object that does not allow light waves to pass through it – you CANNOT see through it |
| translucent | An object that allows a few light waves to pass through it – you can ALMOST see through it |
| transparent | An object that allows light waves to pass through – you CAN see through these objects |
| concave | A concave lens is thicker at the edges than it is in the middle |
| convex | A convex lens is thicker in the middle than at the edges. |
| Cornea | A transparent membrane that covers the eye |
| Function of the Cornea | Light enters the eye through the __________ |
| Iris | A circular band that controls how much light enters the eye; the colorful part of the eye |
| Function of the Iris | Expands and contracts to control how much light passes through the pupil |
| Lens | A transparent tissue that bends light passing through the eye, helping you focus on an image |
| Function of the Lens | Bends light entering eye |
| Function of the Lens | Helps your eye focus on an image as light passes through |
| Pupil | The hole in the center of the eye that allows light to pass through |
| Function of the Pupil | Allows light to pass through (the larger the pupil, the more light passes through) |
| Retina | A layer of tissue on the back of the eye that has cone cells and rod cells that gather information |
| Function of the Retina | Contains rods and cones that change colors and shapes into nerve messages |
| Optic nerve | The great messenger in the back of your eye that carries nerve messages and signals from the retina to the brain |
| Function of the Optic Nerve | Carries messages from the retina to the brain |
| Sclera | The white part of your eyeball; made of a tough material and contains blood vessels |
| Function of the Sclera | Covers most of the eyeball |
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mpmsscience
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