Chemistry
Geography
General knowledge
100

This lightweight gas is the very first element on the periodic table and is the most abundant element in the universe.

Hydrogen?

100

This imaginary line wraps around the center of the Earth at 0 degrees latitude, dividing the globe into the Northern and Southern Hemispheres.

Equator

100

This is the only mammal capable of true, sustained flight.

Bat

200

What name do we give when a liquid rapidly turns into a gas 

Boiling point

200

Covering over 30% of the Earth's surface, this is the largest and deepest ocean on the planet.

Pacific ocean

200

He is credited with inventing the telephone in 1876, famously saying, "Mr. Watson, come here, I want to see you."

Alexander Graham Bell

300

These subatomic particles orbit around the outside of an atom's nucleus and carry a negative electrical charge.

Electrons

300

While Sydney is its largest city, this is the official capital city of Australia.

Canberra

300

This is the name of the longest-running animated American sitcom, featuring a family that includes Homer, Marge, Bart, Lisa, and Maggie.

Simpsons

400

If a solution has a pH value of 2, it is considered highly..?

Acidid

400

This massive South American river basin contains the world's largest rainforest and discharges more water than the next seven largest rivers combined.

Amazon

400

In human anatomy, this is the largest organ of the body, acting as a protective barrier against the outside world.

skin

500

In a saltwater solution, the water acts as the solvent, while the salt is known by this scientific term.

Solute

500

This is the name of the ancient supercontinent that existed around 300 million years ago before breaking apart into the continents we know today.

Pangea

500

This mathematical constant represents the ratio of a circle's circumference to its diameter, usually rounded to 3.14.

Pi (π)