SOUND AND LIGHT

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-LIGHT

1. Light-> Visible Radiation; part of the electromagnetic spectrum that our ayes can detect

2. Reflection-> Change is direction of a light ray when it meets the surface of an object the light rebound off the surface

3. Refraction-> Change in direction of light rays when they move from one medium to another in which they travel at a different speed

4. Lens-> Transparent piece of glass or plastic ETC with two sides, one or both of which must be curved.

5. Eclipse of the sun, occurs when the moon moves between the sun and the earth. The shadow is very small. There are two: Total eclipse and partial eclipse

6. Lunar eclipse, occurs when our planet moves between the sun and the moon

ORDER OF VISIBLE WAVES

1- Gamma rays

2- x-rays

3. ultraviolet

4- infrared

5. microwaves

6- Television waves

7. AM radio

Light Properties

1. Light travels in a straight line

* Light speed -> 300.00 km/s

* Shadow + penumbra

* Eclipses -> solar , lunar

2. Light reflection mirrors

* Plane

* curved -> concave, convex

3. Light refraction-> lens

* Convergent

* Divergent

THE COLOUR OF THINGS

* Transparent, opaque, translucent

COLOURS

*Red, blue, Green