What was that?
Art Thou Smarter Than A 5th Grader?
Sum-thing Math Related (Change?)_
Science: It Matters
Is He Going To Start Talking About Black Holes...
100
Popularized online in the 2020s, this two-word phrase means you’re being completely serious or telling the truth
No cap
100
In visual arts, red, yellow, and blue traditionally belong to the primary group of colours. Mixing them creates these secondary colours.
Orange, Green and Purple
100
A number divisible by both 2 and 3 must also be divisible by this number.
6
100
Commonly referred to as "the powerhouse of the cell", this organelle converts the energy in food into a usable form that the cell can use.
Mitochondria
100
Sharing a name with the zodiac, this Black Hole sits at the center of our galaxy
Sagitarius A*
200
If something in the 2010s was extremely exciting, excellent, or amazing, you might describe it with this fiery three-letter word.
Lit
200
Bilbo Baggins started this type of character arc when he was whisked away from his home on a perilous journey of self discovery and adventure.
Hero's Journey
200
A line with equation y = −3x + 7 has this slope.
-3
200
When an atom gains one or more electrons, it becomes this type of negatively charged ion.
Anion
200
Like spaghettification, this name for the crust of Neutron stars shares similar naming to that of Italian cuisine.
Nuclear Pasta
300
Long before the emoji took over, 2000s texters used this three-letter abbreviation to show they were laughing at something.
LOL
300
Unlike a simile, this figure of speech makes a direct comparison without using “like” or “as,” such as when Katy Perry says "Baby, you're a firework"
Metaphor
300
Red blood cells contain this iron-rich protein, which binds to oxygen and gives blood its red colour.
Hemoglobin
300
NGC 6302 doesn't quite roll off the tongue in comparison to the name given to this birthplace of stars. 
Butterfly Nebula
400
If a friend was acting overly excited or needed to calm down, a 1990s kid might tell them to take one of these imaginary medicines.
Chill pill
400
Leaving clues for the audience, hinting to events that will happen later on in the story.
Foreshadowing
400
For a function, this term refers to the complete set of possible input values.
Domain
400
A standing wave contains locations where destructive interference always produces zero displacement. These points are known by this name.
Nodes
500
An enthusiastic way to say something is fabulous or amazing, inspired by surfing a wave's tube.
Tubular
500
In a play, this speech occurs when a character is alone and speaks their thoughts aloud, famously used in Hamlet’s “To be, or not to be.”
Soliloquy
500
When light strikes a metal with sufficient frequency, electrons can be ejected from its surface. Einstein explained this phenomenon using the particle nature of light.
Photoelectric effect