Animals
Humans
Space
Ocean & Land
100

The largest animal on Earth.

What is a blue whale?

100

This is the largest organ of the human body.

Skin


100

This planet could fit more than 1,300 Earths inside it.


Jupiter


100

Approximately 71% of the Earth's surface is covered by this.

What is water?

200

This bird can fly backwards, unlike most other birds.

What is a hummingbird?

200

This organ has 86 billion neurons

Brain

200

8 minutes 20 seconds for something to hit the earth

Light

200

This forest has an estimated 400 billion trees

What is the Amazon Rainforest?

300

This creature has three hearts and blue blood.

What is an octopus?

300

While identical twins share the exact same DNA, they still possess completely different versions of these unique skin ridges

What is a finger print?

300

This planet rotates on its side.

Uranus

300

This is the largest desert on Earth.

Antartica

400

This is the largest type of Cat in the world.

What is a Tiger?

400

If you stretched out the DNA in a typical human cell, it would be approximately this long.

What is 2 meters?

400

This planet has the tallest known volcano in our solar system

What is Mars?

400

These giant underground structures can contain rivers, lakes and enormous chambers.

Caves

500

This unusual amphibian can regrow lost limbs and even repair parts of its heart.

What is an axolotl?

500

This is the hardest substance found in the human body.

Tooth Enamel

500

This is the closet major galaxy to the Milky-way

What is the Andromeda Galaxy

500

This is the largest island in the world.

Greenland