Mathematics
Oceanology
Astronomy
Logic/Riddle
100

3x - 11x + 7 = 7x + 10   Solve for X

What is -5

100

What percent of the earth is ocean?

What is 71%

100

What major constellation helped early sailors differentiate the directions?

What is Ursa Minor

100

What is dark but was made by the light?

What is a shadow 
200

A2 + B2 = Cis the law of what theorem?

What is the Pythagorean Theorem.  

200

What is the main cause of waves?

What is wind

200

What element makes up 78% of the atmosphere 

What is nitrogen 

200

What can be broken without you touching it?

What is a promise

300

What is the formula for the circumference of a circle?

What is C = πr2

300

An artificial waterway that allows boats to pass through land is called what?

What is a canal 

300

What planet has more than double the mass of all other planets combined?

What is Jupiter

300

What is bought by the yard and worn by the foot

What is a carpet