Light pollution occurs when excess artificial light illuminates the night sky, making it difficult to see stars and increasing energy waste. It is caused by sources like street lights that emit light upwards and result in air glow over cities. Some ways to reduce light pollution include using light shields to point lights downward more efficiently, using red lights for activities like star gazing, and turning off unnecessary lights.

1. Light pollution
By Sophia Perez

2. Light pollution
If you live in the city, you probably
haven’t seen many stars. This is an effect
of light pollution. Light pollution is
caused when light form a light sorce
makes the sky around it lighter. One
example are street lights. They cover up
the light of many stars ,so you only see
the brightest ones.

4. Air glow and cities
• Air glow is another effect
of light pollution. It is
caused when lights glow
upward; a huge waste of
light and energy.
Darker
Brighter

5. What causes light pollution?

6. 3 ways to stop light pollution
1.Use light shields and point them down.
2.When star gazing, use red lights.
3.Turn of the lights!

7. Thank you !!!!!!