Science
History
Music
Movies/TV
100

The chemical sign for water 

H2O

100

Civil Rights leader who gave the "I Have a Dream" speech

Martin Luther King Jr.

100

This instrument has black and white keys

Piano

100

The type of fish Nemo is in Finding Nemo

Clownfish

200

The force keeping planets in the sun's orbit

Gravity

200

This holiday celebrates the end of slavery in the US

Juneteenth

200

The number of notes in a standard musical scale

7

200

This superhero carries the Time Stone in the Marvel universe

Dr. Strange

300

The process by which plants use sunlight to make their own food

Photosynthesis

300

This ancient civilization built pyramids in Mexico and Central America

The Mayans

300

The family of instruments including the trumpet, tuba and trombone

Brass

300

The name of the alternate dimension in Stranger Things

The Upside Down

400

The name of the process in which water vapor cools and turns back into liquid water

Condensation

400

The political term for the right to vote

Suffrage

400

What term indicates the speed of the music

Tempo

400
Simba's uncle in The Lion King

Scar

500

The scientific name for a caterpillars cocoon

Chrysalis 

500

The largest land empire in history

Mongol

500

The highest vocal range regarding pitch 

Soprano

500

Naruto and Sasuke's sensei in Naruto

Kakashi Sensei