Plants + Animals
Space
Chemistry
Human Anatomy
Miscellaneous
100

What is the name for animals without a backbone/spine?

Invertebrates

100

What is the closest planet to the sun?

Mercury

100

What is the only metal that is liquid at room temperature?

Mercury

100

What is the longest bone in the human body?

The femur

100

What is the most abundant element in the universe?

Hydrogen

200

What is the largest living species of bird?

Ostriches

200

What is the closest galaxy to the milky way?

Andromeda galaxy

200

What is the scientific name for the material sometimes known as "fool's gold"?

Pyrite (iron pyrite crystals)

200

What is the largest human organ?

Skin

200

How many bones do sharks have?

0

300

From what continent does the rubber tree originate?

South America

300

How many moons does Mars have?

2

300

Which noble gas begins with 'A'?

Argon

300

What is the longest type of cell in the human body?

Nerve cells (neurons)

300

When molten lava cools quickly, it becomes what dark igneous glass-like mineral?

Obsidian

400

What is the tallest grass on earth?

Bamboo

400

What is another name for the North Star?

Polaris

400

What is the only letter that doesn't appear on the periodic table?

J
400

What is the hardest substance in the human body?

Tooth enamel

400

What element is represented by a 'W' on the periodic table?

Tungsten

500

What is the name used to refer to animals like the octopus, squid, and cuttlefish?

Cephalopod

500

What is the only planet in our solar system not named after a god?

Earth

500

Who invented the first battery?

Count Alessandro Volta

500

How many teeth are in the mouth of the average adult?

32

500

What is the study of mushrooms called?

Mycology