Animals
Science & Technology
Geography
World History
The Human Body
100

What mammal is known as the only one capable of true flight?

The bat.

100

What planet is known as the Red Planet

Mars

100

What is the longest river in the world?

The Nile (acceptable: Amazon, depending on measurement method)

100

What is the longest wall in the world?

The Great Wall of China

100

Largest organ of the human body?

Skin

200

What is the fastest land animal?

Cheetah

200

What does “CPU” stand for?

Central Processing Unit

200

What country has the largest population?

India

200

What is the world’s oldest recorded civilization?

The Sumerian civilization in Mesopotamia

200

What is the hardest substance in the human body?

Tooth enamel

300

What large animal has the longest gestation period—about 22 months?

Elephant

300

What force keeps planets in orbit around the sun?

Gravity

300

What country is home to Reykjavík?

Iceland

300

Who was the Maid of Orléans?

Joan of Arc

300

What is the longest type of cell in the body? 

The nerve cell (neuron).

400

Which animal can sleep for up to three years in extreme conditions?

Snail

400

What is the basic unit of heredity in organisms?

Gene

400

What is the deepest river in the world?

The Congo River

400

What is considered the largest empire in history?  

The British Empire

400

Which body part continues to get bigger with age?

Ears, as well as noses, get longer as people age, but they aren’t growing. 

500

What is the only mammal native to Antarctica?

The Antarctic fur seal (or seals in general)

500

What scientific law states that energy cannot be created or destroyed, only transformed?

The Law of Conservation of Energy (First Law of Thermodynamics)

500

What is the most densely populated city in the world?

Manila, Philippines

500

What was the name of the ancient trade route that connected the East with the West?

The Silk Road

500

What percentage of your body is water?

About 70%.