What is density?
a. the amount of matter in a given volume
b. the force of attraction between two objects having mass
c. the mass of an object multiplied by the force of attraction acting upon it
d. the measure of how much matter is in an object

Listed following are various physical situations that describe how light interacts with matter. match these to the appropriate category. 1) transmission? -visible light meets clear glass -visible light does not pass through a black wall -red light hits a red sweatshirt -light comes from your computer screen -cell phone signals pass through walls -blue light hits a red sweatshirt -white light hits a white piece of paper -light comes from a light bulb