Science
What is the chemical symbol for water?
H2O
What are the three main verb tenses in English?
Past, present and future
How many degrees does a triangle have?
180
What is a human's largest organ?
Skin
What is the term for words with opposite meanings?
Antonyms
What is the name of this formula: a^2+b^2=c^2?
Pythagorean theorem
What is the chemical symbol for iron?
Fe
Unscramble the letters.
rntvmineeno
Environment
What is the name of a perfectly round 3d geometric shape?
Sphere