Science
Geography
Idioms
Word Formation
Acronyms and initialisms
100

The area of a triangle

Base x height / 2

100

The capital of Australia

Canberra

100

His own flesh and blood

Family

100

Afford (adjective)

Affordable

100

FYI

For your information

200

The symbols for gold and silver

Au and Ag

200

Name 5 USA States

California, Texas, Vermont, Massachusetts, South Carolina, ...

200

It has come full circle

Return to a past position or situation

200

Essence (adjective)

Essencial

200

DIY

Do it yourself

300

These law of physics states that the total energy in a closed system remains constant.

The Law of Conservation of Energy

300

These mountain range forms the natural border between Europe and Asia

The Ural mountains

300

In one fell swoop

All at once, in one go.

300

Break (Noun)

Breakage

300

FAQ

Frequently asked questions

400

The term for a segment of DNA that codes for a specific protein.

Gene

400
The country with the most natural lakes

Canada

400

A wild goose chase

A useless search for something

400

Able (verb)

Enable

400

POTUS

President of the United States

500

The SI unit of electrical resistance

Ohm

500

These country is home to the most UNESCO World Heritage Sites

Italy

500

Burn bridges

Destroy relationships

500

Drama (Adverb)

Dramatically

500

NASA

National Aeronautics and Space Administration