S K Y G L O W

While exploring the observatory, you realise that there's a laptop with a glitched screen. You walk towards it and touched the mousepad

Suddenly...the screen lights up… 

S K Y G L O W !

INTRODUCTION

Take a quick read of the newspaper clipping on the right to understand more on sky glow and why it is a form of light pollution!
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Multiple Choice

What is sky glow?

• The sunset glow of the evening sky

• Moonlight passing through the clouds

• The brightening of the night sky

Q1: Definition of sky glow

Ans: Brightening of the night sky in a built-up area

Multiple Select

What are the man-made causes of sky glow?

• Electric lights of cars, street lamps, factories & buildings

• Faint air glow in the upper atmosphere

• Lights from outdoor advertisements

• Anthropogenic activities

• Background light from faint unresolved stars and nebulae

Q2: Causes of sky glow

• Man-made: electric lights of cars, street lamps, factories & buildlings; lights from outdoor advertisements; anthropogenic activities

• Natural: Faint air glow in the upper atmosphere; Background light from faint unresolved stars

Multiple Choice

Why is sky glow a form of light pollution?

• It produces a glare in the night sky

• It reduces the contrast of stars in the night sky

• It prevents humans from sleeping at night

• It brightens the night sky

Q3: Why is sky glow a form of light pollution?

Ans: reduces the contrast of stars in the night sky

Multiple Select

Where is sky glow commonly visible at?

• brightly lit shopping malls around the world

• cities and towns throughout the world

• above over-illuminated commercial areas, sport complexes & stadiums

• above dimly-lit streets and housing estates

Q4: Where is sky glow commonly visible at?

• cities and towns throughout the world

• above over-illuminated commercial areas, sport complexes & stadiums

Multiple Select

What are the effects of sky glow? Tick all that apply.

• Nocturnal animals are able to see better

• It is easier for everyone to see stars at night

• Disruptions in natural cycles

• It is harder for astronomers to view celestial objects

Q5: Effects of sky glow?

• Disruptions in natural cycles

• It is harder for astronomers to view celestial objects

WHILE WAITING ...

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