Answer:

3. Some materials, like glass, can transmit light. This means that they allow light to pass through them. Other materials, like wood, can absorb light. This means that they absorb the energy from the light and convert it into heat. Finally, some materials can block light. This means that they do not allow any light to pass through them.

4. There are several ways to scatter light from its source. One way is to reflect the light off of a surface, like a mirror. Another way is to refract the light through a medium, like water or glass. Finally, you can diffract the light by passing it through an object with small openings, like a screen door or fence.

-- it's better that you'll read your books you'll find more relevant answer there. :)