Identify the differences between ultraviolet (UV) lights and light-emitting diode (LED) lights.

Identification should include

• differences in wattage, voltage, and bulb life
• safety concerns regarding UV exposure, such as under-curing or over-curing
• the signs of under-curing or over-curing
• knowledge of exothermic reactions
• lifespan of UV and LED lights.

Process/Skill Questions:

• What are some potential exothermic reactions?
• What can cause an exothermic reaction?
• What are some potential benefits of LED lights over UV lights?