Decades
Science
Geography
History
Holiday Riddles
100

This decade saw the first human land on the Moon.

What are the 1960s?

100

This force keeps planets in orbit around the Sun.

What is gravity?

100

This desert covers much of northern Africa and is the largest hot desert in the world

What is the Sahara?

100

This organization, formally known as Ashby House, started in 1978 as the first community-based brain injury rehabilitation program in North America. 

What is CHIRS?

100

I arrive with a bunny, not a sleigh; colorful eggs help give me away.

What is Easter?

200

This theme park opened in Anaheim, CA. in 1955.

What is Disneyland?

200

This lobe of the brain is primarily associated with decision-making, planning, and impulse control.

What is the frontal lobe?

200

This river flows through Egypt and is often considered the longest river in the world.

What is the Nile?

200

Opened in 1976, this landmark was the tallest free-standing structure in the world for more than 30 years.

What is the CN Tower?

200

My most famous symbol delivers gifts, but legally speaking, he's probably guilty of countless cases of breaking and entering.

What is Christmas?

300

This 1995 platform allowed users to auction items online, pioneering consumer e-commerce

What is eBay?

300

This is the body's largest organ helps regulate temperature and protects against infection.

What is the skin?

300

This nation has the most time zones of any country in the world.

What is France?

300

Founded in 1827 as King's College, this institution is now Canada's largest university.

What is University of Toronto?

300

I'm the one day when receiving a box of candy from a stranger might seem less suspicious than usual  

What is Valentine's Day?

400

This 1971 invention by Ray Tomlinson introduced the use of the “@” symbol in modern digital communication

What is email?

400

This pigment gives humans their hair, skin, and nail colour.

What is melanin?

400

This country has the world's largest population as of 2026.

What is India?

400

This 1954 storm caused devastating flooding in southern Ontario and led to major changes in floodplain management.

What was Hurricane Hazel?

400

Children may spend weeks preparing for me, then finish collecting my rewards in a single evening.

What is Halloween?

500

This 2001 platform became one of the earliest large-scale open-source encyclopedia projects.

What is Wikipedia?

500

This is one of the strongest muscles in the human body

What is the jaw?

500

This country contains the world's lowest exposed land point, along the shores of the Dead Sea.

What is Jordan?

500

This Ontario city was known as Berlin until it changed its name during World War I.

What is Kitchener?

500

Eight nights I shine, though I'm not a streetlamp. A special candle holder helps me glow

What is Hanukkah?