Question

Why is it a better to wear a white shirt on a hot summer day instead of a black shirt?

Answer 1

Yes, it is better to wear a white shirt because black is a color that attracts sunlight, therefore, making you sweat more if you wore the black shirt. 

Answer 2

Different colors on the visible light spectrum absorb different amounts of heat. Black shirts would absorb the most heat while white shirts would absorb the least making you cooler.