Science test on Monday, December 19th
Label all the parts of an eye.
Know these definitions:
- Spectrum: all the colors (ROYGBIV) that come together to make up white light
- Prism: a transparent object that is used to separate white light into the spectrum of colors.
- Refract: to bend
- Reflect: to bounce back
- Transparent: You can see clearly through it and light can pass through it. (A window, eye glass lens, glass, water.)
- Translucent: You can not see clearly through it, you can see shadows of objects. Light can pass through it. (Most colored glass or glass with a design, fluorescent light covers, some shades, gauzy curtains).
- Opaque: You can not see through it. No light can pass through it. (Person, car, tree, wall, desk, chair.)
- Convex: curved outward- Larger view, used in stores to see around corners. Used in microscopes.
- Concave: curved inward- smaller view, objects appear upside down. Used in telescopes.
Know this information:
- Light travels in a straight line.
- Light travels in waves.
- Light is energy.
-We can only see things when light hits an object and bounces off it. The light from the object then travels through our pupils which creates an upside-down image on our retina. The image then travels on the optic nerve to the brain, where it is turned right side up again.
- Dark objects absorb more light than light colored objects. This is why dark clothing is hotter in the summer. It is collecting more energy from the light.
-The best object to reflect something would be a flat mirror. It creates an exact reflection, only backwards.
-Light is bending and slowed down when it is refracted.
-A transparent object, such as water or a lens, is used to refract light.
-When light is blocked by an opaque object, a shadow of the object is formed.
-White light is made up of a spectrum of colors (all the colors of the rainbow).
- A prism or a drop of water can be used to break up white light into a spectrum.
- ROY G BIV- Red, orange, yellow, green, blue, indigo, and violet
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