1. An investigator wants to find out if longer hours of watching television can cause eye defects. Independent Variable: Dependent Variable: Constant Variables: 2. A researcher wants to know if the insulation of a room affects the temperature of the room. Independent Variable: Dependent Variable: Constant Variables: 3. You want to test what paper is best to use for a paper airplane to make it fly longer. Independent Variable: Dependent Variable: Constant Variables:​