Space
Animals
Earth
Human Body
Physics
100

This is the coldest planet in our solar system with a coldest recorded temperature of -371 degrees. 

Uranus

100

The ears of this animal can be 6 feet long. 

African Elephant

100

This helps spread the Sun's heat around our planet. 

The ocean

100

This is the hardest substance in the human body?

Enamel 

100

This is the number of elements on the periodic table. 

118

200

This is the fastest spinning planet in our solar system making its day length just under 10 hours. 

Jupiter

200

This is the only bird that can fly backwards.

Hummingbird

200

This is the largest desert on Earth. 

Antarctica 

200

This is how many pounds an average adult brain weighs. 

3 pounds

200

This is the reason why an astronaut cannot burp in space and can only release gas by farting. 

Gravity

300

This planet has clouds made up of sulfuric acid! 

Venus

300

This is the largest living predatory fish. 

Great White Shark

300

This is the LARGEST river on Earth by volume of water. 

Amazon River

300

This substance produced by the human body is a type of sweat. 

Earwax

300

This group of Nobel Elements is stable and does not like to bond with other atoms. 

Nobel Gases 

400

This planet has the slowest rotation speed, making one day equal to 243 Earth days. 

Venus 

400

These two animals can sleep while standing up. 

Flamingos and Horses

400
This is how long it takes our planet to complete one rotation. 

~24 hours

400

This is the number of bones in the adult human body. 

206

400

This is the color of oxygen when it is in a liquid or solid state. 

Light Blue

500

This was the first food eaten in space by an American Astronaut. 

Applesauce

500

This animal laughs when it is being tickled. 

Rats

500

Which layer of Earth's atmosphere is missing: 

Stratosphere, Troposphere, Exosphere, Thermosphere, and M__________________

Mesosphere

500

Humans do this an average of 15 times a day. 

Flatulence (fart)
500

This is the speed at which everything in Earth's atmosphere accelerates.

9.8 m/s/s (acceleration due to gravity)