1. During a lunar eclipse the moon is in the shadow of the Earth. Why does the moon have a faint red color during the eclipse?

1.     During a lunar eclipse the moon is in the shadow of the Earth. Why does the moon have a faint red color during the eclipse?

2.     The distance from the sun to the Earth is 1.5 x 1011 m. How long does it take for light from the sun to reach the earth? Give your answer in seconds.

3.     Why are polarized sunglasses particularly effective in reducing glare?