Math
Science
History
Food
Riddles
100

Solve: 5x−7=18

x = 5

100

What force keeps planets in orbit around the Sun?

Gravity

100

Who was the first President of the United States?

George Washington

100

What is the main ingredient in guacamole?

Avocado

100

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?
 

A map.

200

Evaluate: (−2)3

-8

200

What is the main gas plants take in during photosynthesis?

carbon dioxide

200

Who invented the light bulb?

Thomas Edison

200

What is sushi traditionally wrapped in?

Seaweed (nori)

200

What comes once in a minute, twice in a moment, but never in a thousand years?

The letter M.

300

What is the slope of the line passing through (2,3) and (6,7)?

1

300

What galaxy do we live in?

The Milky Way

300

What were the three branches of government created by the Constitution?

Legislative, Executive, Judicial

300

Which nut is used to make marzipan?

Almond

300

I am not alive, but I grow; I don’t have lungs, but I need air; I don’t have a mouth, but water kills me. What am I?

Fire.

400

If two angles are supplementary and one measures 165 degrees, what is the measurement of the other angle?

15

400

What are tectonic plates?
 

Large pieces of Earth’s lithosphere that move on the mantle

400

What year did World War II end?

1945

400

What is the only food that never spoils?

Honey

400

What kind of room has no doors or windows?
 

A mushroom.

500

Factor: x2+7x+10

(x+5)(x+2)

500

What causes seasons on Earth?

The tilt of Earth’s axis

500

What were the first 10 amendments to the Constitution called?

The Bill of Rights

500

What is the world’s most expensive spice by weight?

 Saffron

500

What disappears as soon as you say its name?

Silence.