On Halloween, children prepared to go trick-or-treating with glow sticks. They prepared two glow sticks (“Glow Stick In” and “Glow Stick Out”). The light intensity was given a value of 10 for both Glow Sticks. At 6:00 pm, the children left Glow Stick In inside of the 25oC house and took Glow Stick Out outside in 10oC weather.

At 8:00 pm, they noticed the light intensity of Glow Stick Out at 10oC had decreased to 5.

They immediately returned home and noticed the light intensity of Glow Stick In at 25oC had decreased to 7. At 9:00 pm, both glow sticks were at 25oC inside the house. Glow Stick In had a light intensity of 6, and Glow Stick Out had a light intensity of 8.

Prompt: Using at least two scientific principles, write a scientific explanation that includes evidence that justifies or describes the change in light intensity of both glow sticks.