Trivia

Hard

The Only Rock That Floats In Water Is?

Chalk
Igneous Rock
Soap Stone
Pumice

Answer: Pumice

If you’re planning on floating an S.O.S. message off the island you’re stranded on and you’re short on bottles and coconuts, you could always attach it to a big hunk of pumice–the only rock that floats.

Pumice has an extremely low density, so low in fact that a given volume of it is 1/12th the weight of granite, 1/45th the weight of lead, and–most relevant–1/2th the weight of pure water. Drop a pumice stone in the ocean and it will make a splash like any stone, but then it will float away on the waves.

Trivia

Very Hard

Half-Life 2 Includes An Homage To Which Sci-Fi TV Show?

Trivia

Hard

Which Of These Hobbies Increases The Participant’s Ability To Lucid Dream?

Trivia

Hard

Iconoclastic Comedian George Carlin Was Also The Narrator For Which Of These Children’s Shows?

Trivia

Hard

In Victorian London Residents Enjoyed Up To A Dozen Deliveries Of What Per Day?

Trivia

Easy

The Medical Term For Sleepwalking Is?

Trivia

Hard

Sci-Fi Author Ernest Cline Loaned His DeLorean To Fantasy Author George Martin In Exchange For?

Trivia

Hard

The Name of Google’s Short-Lived “Wave” Collaboration Framework Was Inspired By Which Sci-Fi Show?

Trivia

Easy

Modern Potatoes Originated In The Region Now Occupied By?

Trivia

Hard

The Most Intense Period Of Conflict In The History Of Paleontology Is Known As The?