Trivia

Hard

What Is Chalk Made Up Of?

Plankton Fossils
Prehistoric Volcanic Ash
Petrified Ocean Surf
Pulverized Dinosaur Bones

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

Hard

The Strongest Candidate For An Alien Radio Transmission Is Referred To As?

Trivia

Hard

Some People Avoid Which Of These Herbs Because They Report It Tastes Like Soap?

Trivia

Easy

What Unorthodox Piece Of Equipment Was Used In The Manufacturing Of The First Nike Shoes?

Trivia

Hard

The Game Chinese Checkers Originated In What Country?

Trivia

Hard

Which Day Of The Week Is The Rainiest?

Trivia

Hard

If You Want To Survive An Unprotected Spacewalk You’d Better Not?

Trivia

Hard

The Fastest Moving Celestial Bodies Are?

Trivia

Easy

Who Holds The Record For Most Time Spent In Space?

Trivia

Hard

The First Station In The U.S. To Broadcast Digital TV Was Located In?

Trivia

Hard

Which Video Game Was The First To Feature A Female Protagonist?