Trivia

Hard

What Is Chalk Made Up Of?

Plankton Fossils
Petrified Ocean Surf
Pulverized Dinosaur Bones
Prehistoric Volcanic Ash

Answer: Plankton Fossils

Chalk is just some soft rock that rubs off easily on other rocks like slate, right? Nothing interesting to see, that is unless you break out the electron microscope and delve into the microtopology and history of it.

Peer close enough at a hunk of chalk and you’ll make an interesting discovery. Chalk is composed of millions of tiny, soft calcite fragments (calcium carbonate) all crushed together under pressure. These fragments are minute calcite plates shed by a type of plankton, coccolithophores, millions of years ago.

In areas of the ocean rich with these little organisms, trillions upon trillions of little shed plates would accumulate like snow on the bottom of the ocean and then, under the enormous pressure of the water, would become fused together. Movement of the tectonic plates slowly pushed these enormous deposits of chalk onto land where, eons after their creation, humans happily mine them.

Trivia

Very Hard

Who Invented The Light Bulb?

Trivia

Hard

Which Popular Children’s Toy Was Banned From Secure Facilities?

Trivia

Hard

What Is The Oldest Electrical Coding System Still In Use?

Trivia

Easy

Which Of These Shows Ushered In Frequent Use Of Cliffhangers In Television?

Trivia

Hard

The Special Effects In Which Of These 1990s Films Inspired A Whole New Era Of Film Making?

Trivia

Hard

The Experience Of Transitioning Between Wakefulness And Sleep Is Called?

Trivia

Hard

The Floppy Disk Icon As A Save Button On Modern Software Is An Example Of A Design Element Called A?

Trivia

Easy

What Was The First Computer Virus?

Trivia

Hard

Which Of These Monuments Was Rebuilt In Complete Secrecy?

Trivia

Hard

The Screen-Independent Unit Used For Ensuring Exact Proportions Across Different Display Systems Is Called A?