Nat Geo 101: Light Pollution (Wk 2)

The lightbulb was invented...

• 1500 years ago

• 100 years ago

• 150 years ago

• 70 years ago

Light pollution is caused by...

• Natural light

• Artificial light

• Blacklight

• ISB

Which of these is NOT a type of light pollution?

• Light offense

• Glare

• Light trespass

• Sky glow

What animals harmed by light pollution are mentioned in the video?

• Sea turtles

• Sea tortoises

• Fish

• Sea horses

Light pollution is harmless to humans.

• True

• False

How much has light pollution increased each year in North America over the past few decades?

• 60 to 80%

• 50%

• 6 to 10%

• 1 to 2%

What does not create artificial light?

• Lightbulbs

• Fire

• Billboards

• TV screens

What is one solution to the problem of artificial light?

• Increase elecricity use

• Energy-efficient lightbulbs

What does the word optimise mean?

• to make as effective, perfect, or useful as possible.

• to decrease the amount of something.

• to hide something from view so that it cannot be seen.

• artificial.

What accent does the narrator of the video have?

• British

• Australian

• Vietnamese

• American