A student was asked to demonstrate a chemical change to the class. A candle was lit and as it burned the student explained that the shorter length was evidence of a chemical change. This explanation is not complete. The student should also include which of the following in his explanation? A. Color change
B. Solid formation
C. Heat given off
D. Heat taken in

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

This flow chart shows the amount of energy that is emitted by each type of light. ultraviolet > blue light > yellow light > red light (maximum energy) (minimum energy) in an experiment, shining which type of light on a strip of metal would be least likely to produce the photoelectric effect? ultraviolet light dim blue light bright red light bright yellow light

What human activity increases beach erosion?