What Do Astronomers Mean by Light Pollution

question 2

Multiple Choice

What do astronomers mean by light pollution?

• A)Light pollution refers to pollution caused by light industry as opposed to heavy industry.
• B)Light pollution refers to harmful gases emitted by common street lights.
• C)Light pollution refers to light used for human activities that brightens the sky and hinders astronomical observations.
• D)Light pollution refers to the lights that must be used inside major observatories and that make it difficult for astronomers' eyes to adapt to darkness.
• E)Light pollution is another name for sunlight,which makes it impossible to see stars in the daytime.

---

Definitions:

Standard Normal

A distribution that is standard and normal with its average at zero and its variability defined by a standard deviation of one.

Area

The measure of the extent of a two-dimensional surface or shape, or the extent of a land surface within specific boundaries.

Standard Normal

A special case of the normal distribution with a mean of zero and a standard deviation of one, used as a basis for comparison with other normal distributions.

Area

The determination of the size of a two-dimensional figure or area, measured in square units.