Halloween Movies
Engineering
General Halloween Knowledge
Pollution & Public Health
Halloween Riddles
100

What are sewn over the eyes of Coraline, in the animated kids horror film?

Buttons

100

What type of infrastructure carries rainwater off roads and parking lots to prevent flooding?

A storm drain or stormwater drainage system

100

What smelly food is said to keep vampires away?

Garlic

100

What do we call tiny plastic particles, generally smaller than 5 millimeters, that have been found in oceans, drinking water, and food?

Microplastics

100

What room do ghosts avoid?

The living room

200

What is the last name of the three Hocus Pocus sisters?

Sanderson

200

What process removes dirt and suspended particles from water at a drinking water treatment plant?

Filtration

200

What city in Massachussets is most well known for witchcraft?

Salem

200

When excess nitrogen and phosphorus enter a lake, they can cause algal blooms and oxygen depletion. What is this process called?

Eutrophication

200

What makes skeletons strong and black cats purr?

Milk

300

Who travels to Christmas Town in “The Nightmare Before Christmas”?

Jack Skellington

300

What is the name for the underground layer of permeable rock or sediment that stores and transmits groundwater?

An aquifer

300

What do you call a group of witches?

A coven

300

After heavy rain, why might swimming at a beach be temporarily discouraged near stormwater outfalls?

Runoff can carry sewage, pathogens, and other contaminants into the water, increasing illness risk. Combined sewer systems can overflow during rain events

300

I’m tall when I’m young, I’m short when I’m old, and once a year, I make heavy pumpkins light. What am I?

A candle

400

Where does Freddy Kreuger attack his victims?

In their dreams

400

What type of wastewater treatment process uses microorganisms to break down organic pollutants?

Biological treatment (activated sludge)

400

According to Google, this candy is the #1 best-seller for Halloween?

Reese's Peanut Butter Cups

400

What event first created the connection between clean water and human health?

A cholera outbreak in 19th century London


400

Who makes it, has no need for it.
Whoever buys it won’t use it.
Who uses it, won’t care.
What am I?

A casket

500

What movie is based on a DC character that undergoes an experimental surgery after he was attacked by a local mobster?

Clayface

500

A town wants to reduce flooding by letting rain soak into the ground instead of rushing into storm drains. Name two engineering solutions.

Rain garden, permeable pavement, infiltration trenches, or bioswales

500

This ghost became a popular movie sensation in the 1990s and an instant cult classic?

Casper

500

If left unchecked, sulfur emissions from power plans can create which environmental problem?

Acid Rain

500

I don’t have eyes, but once I did see. Once I had thoughts, but now I’m empty. What am I?

A skull

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