English
Math
Science
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Hard questions of all classes
100

Who gave Brian the Hatchet?

His mother

100

Solve for x

2x+80=90

x=5

100

What type of signals have sine waves?

Analog signals

100

Who built Versailles

King Louis XIV (14)

100

Why did the narrator of the story "Tell-Tale Heart" decided to kill the old man?

Because of the old man's eye

200

What are two stories we read at the beginning of the year?

Tell-Tale Heart and The Landlady

200

What is a coefficient?

The number in front of a variable

200

Are electrons inside or outside the nucleus

Outside

200

Who believed in geocentric models?

The church

300

Is the word "she" a noun or a pronoun?

Pronoun

300

What is the formula for the Pythagorean Theorem?

a2 + b2 = c2

300

Is water an acid, base, or neutral?

Neutral 

300

Was the Byzantine empire the Western Roman Empire of the Eastern Roman Empire?

Eastern Roman Empire

400

What type of sentences have two independent clauses?

Compound sentences

400

What is the formula of the volume of a sphere?

V = 4/3πr2

400

Is elastic energy potential energy or kinetic energy?

Potential energy

400

Who was the leader of the Haitian revolution?

Toussaint Loverture

600

What kind of plane was Brian in when he crashed?

Cessna 406 bush plane

600

Convert 38967012000 to scientific notation

3.8967012 * 1010

600

What are the 7 EM waves in order?

Radio waves, microwaves, infrared, visible light, ultraviolet, x-rays, and gamma rays.

600

What 6 South American nations did Simón Bolívar liberate?

Venezuela, Colombia, Panama, Ecuador, Peru, and Bolivia (named after his honor).

600

Find the solution using the substitution method 

2x+4y =196           x+y=52

(6, 46)

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