Directions: Fill in the blanks in the sentence below. Below each paragraph are words corresponding on the properties and behavior of light. Write your answer on a clean sheet of paper. Light is a natural agent that stimulates sight and make things possible. It is a type of energy known as 1. It is given out by luminous objects such as the sun, light bulbs and laser. It is made up of little packets Light travels as waves. But unlike sound waves, it does not need any material to - a completely airless space. Light Light behaves in a variety of ways when it " into the of energy called 2. carry its energy along. This means that light can travel through a 3. waves travel out from their source in a straight lines called 4. comes in contact with water, air, and other matters. When light strikes matter, a part of light is 5. ". matter and is transformed into heat energy. If the matter that the light strikes is a transparent material, the light component that was not absorbed within the material is 6. " material. If the surface of the material is smooth (a mirror for example), 7." irregular having pits and protrusions, the light 8. " through and exits to the outer side of the occurs, but if the surface is

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.